How to cook a chameleon in a mask

How to choose a chameleon mask for welding correctly

How to choose a chameleon mask for welding

A welder's mask protects the eyes and facial skin from the harmful effects of ultraviolet rays. The term “electro-ophthalmia” is known to every welder. An eye burn from welding does not lead to anything good, only to loss of vision.

Therefore, if you decide to seriously engage in electric welding, you should know which eye protection is best to choose. Today, when we are in the age of automation, chameleon welding helmets are in fashion. What it is and how to choose an automatic welding helmet will be discussed in this article from the construction magazine samastroyka.ru.

Types of welding helmets

Before diving headlong into the technical characteristics of chameleon masks, you need to consider what types of welder masks there are:

Welding shield - perhaps the most antediluvian protection for the eyes of a welder, this is a welding shield. This type of protection has a passive light filter; it is inserted into a piece of plastic or hard cardboard, which can be used to cover the eyes and skin of the face when welding.

The advantages of welding shields are that they are cheap, but they have many more disadvantages. The most significant of all is a passive light filter, through which you can see only at the moment when the welding arc is already burning.

Therefore, at the moment the electrode is ignited and the metal is tacked, you can quickly pick up “bunnies”, and then spend the whole night remembering “what holds the light up.”

A welding helmet is a more advanced version of a welding shield, but only with the ability to be mounted on the head. A regular welding helmet is also equipped with a passive light filter, therefore, it does not create any special convenience in welding. Just as in the case of a welding shield, you always have to be distracted by igniting the electrode, whether you “grabbed” the metal in the right place, especially if you are a beginner in welding.

What is a chameleon welding helmet

The third type of welding helmet is the chameleon mask. This is a welding helmet with an auto-darkening function at the moment the arc is ignited.

The automatic welding helmet has a number of special advantages over other welding helmets:

• The eyes and skin of the welder’s face are reliably protected from the harmful effects of ultraviolet rays;
• There is no need to be distracted all the time by extraneous processes. When the welding arc is not burning, the light filter of the chameleon mask is almost transparent, and everything is clearly visible through it. However, at the moment when the electrode begins to ignite, the light filter automatically changes its throughput and darkens, thereby protecting the welder’s eyes from harmful “bunnies”.

Automatic chameleon masks, in addition to the auto-darkening function, can be equipped with other additional functions. For example, the mask can “remember” the time of welding work, have a smooth adjustment of the light filter, as well as some other features. Let's take a closer look at what exactly you need to look for when choosing an automatic welding mask.

Each chameleon mask, expensive or cheap, no matter, has a number of basic functions that determine its qualities and capabilities:

The speed of operation of the light filter (time) is perhaps the most important characteristic of chameleon masks, because the level of protection for the welder’s eyes depends on how quickly the light filter operates. There is a maximum allowable response time for the filter, which is one millisecond. However, there are masks with much shorter filter response times. It goes without saying that the higher the filter's darkening speed, the better.

The degree of darkening is another of the most important characteristics of chameleon masks, or more precisely, the automatic light filter with which they are equipped. Most automatic filters have an extended range, from 9 to 13 DIN, which is optimal for most cases. However, the wider the darkening range of the filter, the more functional the automatic chameleon mask will be, and there will be an additional possibility of using it for various types of welding.

Below are the recommended filter range values ​​for different types of welding:

Optical class - this characteristic of chameleon masks indicates the optical properties of the filter. As a rule, the optical class of a light filter is indicated by three numbers, for example, 1/2/3 - where:

• 1 — filter transparency coefficient;
• 2 - light scattering;
• 3 - degree of darkening uniformity.

The lower the values ​​indicated in the optical characteristics of the filter, the higher the quality and reliability of the chameleon mask.

Source: https://samastroyka.ru/kak-vybrat-masku-chameleon.html

How to choose the right Chameleon welding helmet: selection criteria

Specialized stores offer modern welding equipment, effective protective measures from clothing to shields attached to the performer’s head to free up the hands.

The chameleon welding helmet is the best option, as it allows the welder not only to work productively when connecting metal structures, but also to remove slag and clean weld seams without removing the protection.

Welding helmets of the chameleon brand first appeared on the Russian market recently and immediately gained enormous popularity because new technologies were used in their production: film coatings, solar panels, as well as control of all processes using microelectronics.

Operating principle

When joining metal structures, not only welding is performed, but also other work, for example, removing the slag coating, so the performer has to lift the protective visor up and wear transparent glasses so that fine scale does not get into the eyes during removal.

An outdated welder's mask provides reliable protection from a bright arc flash, but does not allow you to see the outside world when you are not welding, which causes a lot of hassle and significantly slows down the work process.

To speed up productivity, a chameleon welder's mask was developed, where the light filters are instantly activated before a bright arc is excited, and at the end of welding they brighten, playing the role of protective glasses. Liquid crystals block bright light, activate the protection of photocells installed on the sensors, and the light filter has a complex design.

Positive and negative qualities

The chameleon welding shield remains transparent, the darkening is no more than 4 DIN, if there is no active light emission of particular brightness, when the arc is excited, the darkening increases in the range of 9-13 DIN, which depends on the intensity of the operating mode.

Advantages, how to choose the best working tool:

• The performer's face is completely protected.
• Light filters provide maximum protection of the retina from the negative effects of the welding process.
• It is possible to adjust parameters for each employee.
• Ventilation will help you work in a smoky room.
• Automatic light filters allow you to weld and check the quality of seam joints without removing the mask.
• The headband is adjusted for a specific performer, taking into account the structure of the head.

Flaws:

• The quality of dimming at sub-zero temperatures decreases, and switching time increases;
• Storage in direct sunlight and in unheated rooms during frost is not allowed;
• built-in batteries cannot be replaced;
• high price for models equipped with individual ventilation.

Welders with many years of experience note that in masks of the old format, protection was based on cheap, durable glass, resistant to high temperatures, and in chameleons, on expensive and not always reliable plastic.

Features of the protection filter

Liquid crystal filters are particularly sensitive - the higher the brightness of the welding arc, the denser the darkening . After stopping welding work, the filter remains dark for several seconds, since the hot metal emits a bright glow that adversely affects the organs of vision.

The disadvantages of the light filter are that when the temperature drops, the liquid crystals slow down, and below minus 20C their operation is no longer possible.

The risk of “catching a bunny”

The bright glow emitted by the welding arc takes less than a second to hit the performer’s organs of vision, so manufacturers of chameleon masks install light filters whose response speed varies from 100 microseconds to one ten-thousandth of a second. This period of time is enough to darken the screen and protect your eyes.

For many models, the sensitivity of the photocell is adjusted, and the delay time after the disappearance of the active arc is adjusted , but here you need to take into account the bright glow of the cooling metal, which negatively affects vision.

Is it possible to clean a seam in a mask?

Adjustable filters ensure normal operation of the welder in two main modes: during welding (blackout is activated) and when cleaning the seam joint from slag (the window becomes transparent). When working to remove slag, the mask protects the performer from the smallest fragments, and the light filter itself is protected by outer glass. When it wears out as a result of long use, a spare sample is inserted.

The difference between expensive filters

The cost of chameleon brand masks varies depending on the work performed:

• for household use - 1.5-2.0 thousand rubles;
• professional models - up to 4.0 thousand rubles.

This difference is due to the use of more expensive light filters in the second option . Budget masks react worse to the occurrence of an arc in heavy dust, but when using them several times a month for work, this is not so significant.

Types and characteristics

Masks of this modification are divided according to the following indicators:

1. Class of optics used. This takes into account the quality of the filter and the overall performance of the assembly; the higher it is, the less distortion there is.
2. Transparency of glass or light scattering. If the marking indicates high parameters, then such glass is highly transparent and transmits a lot of light.
3. Uniformity means an even darkening of the screen surface; the parameter changes as the viewing angle deviates.

Also, a chameleon-type welding mask has the following indicators: speed of darkening and lightening, sensitivity of the sensor photocell . The speed I operate is such that the bright flash from the formation of the arc does not have time to affect the performer’s eyes, and after the work is completed, the optics quickly brighten.

Specifics of the right choice

When purchasing a chameleon mask, you should adhere to the following recommendations:

1. Availability of a certificate. Cheap analogues from Chinese manufacturers do not have them, however, there are fake similar documents, so you need to be especially careful.
2. Check the markings of the main indicators, the degree of darkness is at least 6 din.
3. On the helmet, external control buttons are not allowed, but only switches to prevent accidental disabling of the protection.
4. Convenient headband fastening.
5. The dead weight of the product is of no small importance.

Before paying for your purchase, please read the instruction manual.

Who produces

In stores and on the Internet you can find chameleon masks from manufacturers from China and Korea, but buyers need to be very careful - there are a lot of low-quality products.

Popular chameleon brands include:

• Tecmen was the first to receive a DIN Plus quality certificate for similar products; Chinese filters protect 100% from various types of radiation, but there is no insurance against spontaneous reset of dimming parameters.
• The stable and high cost of models from European manufacturers is confirmed by their high reliability in operation.
• Svarog and Resanta, produced in Russia, are characterized by stable quality, but spontaneous shutdowns of the protection are possible when performing argon welding.
• Korean filters become covered with spots and webs of small cracks during active use.

Malfunctions and solutions

Some problems can be solved on our own:

1. The filter darkens the screen unevenly - adjust the distance between the shield and your eyes.
2. Flickering or poor-quality dimming - the glass is dirty or needs to be replaced.
3. Reduced sensitivity - this occurs at low temperatures, you need to stop working.
4. Decreased visibility - wipe the outer glass, improve the lighting of the work area, the dimming level has been adjusted incorrectly.

To eliminate defects, try recharging the solar panels or replacing the installed batteries . If this does not help, then contact your nearest service center.

During long-term use of budget models, the contacts oxidize or spontaneous desoldering occurs. You must purchase spare parts only from the model manufacturer - otherwise they may not fit.

What a welder should remember

Adjustment of settings is carried out according to the attached instructions, and the performer must know:

• chameleon helmets are not suitable for plasma and gas welding;
• the product cannot be left on a newly welded structure;
• disassembling filter cartridges is prohibited;
• the product will not withstand strong impacts;
• Moisture is not allowed to get on the filter;
• solvents and detergents are not allowed when processing the mask;
• The batteries need to be changed only when the red light comes on, and the filter switches to grinding mode.

All types of adjustments are made before starting work.

Carrying out maintenance

Maintenance is carried out at least once a month . The surface of the mask is wiped with a cotton cloth moistened with non-aggressive liquids; products containing abrasive particles and oil-containing substances should not be used to clean glass. Cleaning actions are carried out with care and delicacy; strong pressure on the surface of the product is avoided.

Adjustment options

It is not for nothing that the filter is called a chameleon, since it changes its darkening automatically when a welding arc appears or disappears.

Preparing the Headband

The mask on the performer’s head should be secured tightly, but without irritating the skin. Expensive models have adjustment not only for head coverage, but also several types of fasteners for a more precise fit to the individual parameters of the welder.

Distance from eyes to filter

This parameter is adjusted strictly individually using special locking nuts , because each person has different visual acuity. The distance from the screen for both eyes should be the same. After adjustment, the clamps securely secure the set position.

Shade level

It depends on the types of welding and the magnitude of the current; its optimal parameter is selected from the tables . Professional helmets guarantee manual adjustment during the work process, which is made by each performer according to his own feelings. In the budget version, similar adjustments are located inside the product.

Filter sensitivity

It is adjusted before starting work, taking into account the fact that the photocell is triggered an instant before the arc is activated, and the screen brightens after a few seconds, when the metal has cooled and will not have a negative effect on the retina.

Delay time

Produced by a regulator located on the inner surface of the cartridge , spot welding is performed with a short delay, and for other types of welding work a longer period of time is used.

Charging method

The method directly depends on the elements used:

• if there are batteries, charging is carried out from the mains;
• solar panels are charged from targeted lighting with strong sources of artificial light or from direct similar rays;

• disposable batteries must be replaced.

If the model uses the first two battery options, then combined charging is performed.

conclusions

Chameleon-type masks reliably protect the welder from radiation and sparks; the domestic market of the Russian Federation offers an extensive range of models from foreign and Russian manufacturers.

When purchasing, carefully check the product and make sure it has a certificate so that sellers do not supply a faulty sample, which will then be problematic to replace.

Similar electric welder helmets must be repaired at service centers under warranty; simple defects are eliminated manually, for example, replacing glass or batteries. Problems related to the light filter can only be solved with the help of a specialist who repairs similar products.

Source: https://svarka.guru/oborudovanie/rashodniki-i-kompletuyushie/maska-hameleon.html

Choosing a welding helmet | Blog | DNS Club

: 2 years ago

Welding is a rather risky profession, but you can’t live without it; even in the 21st century, manual labor is invaluable and cannot always be automated. Working with welding is not the easiest, and if you add certain risks to this, then not everyone dares to weld on their own. The requirements for organizing a workplace are not casually regulated and are quite high.

The most vulnerable organs when working with welding are the organs of vision and breathing. Bright light, sparks, high temperatures, toxic fumes - this is what protection is needed at all stages of welding. Welding masks provide partial and sometimes complete protection. Your health will depend on how responsibly you approach the choice of protection.

Agree, it is better to spend money once on purchasing high-quality protection than to pay bills for treatment for many years.

This is important to know: the effect of welding on the organs of vision and breathing

Under no circumstances should you work with welding without a protective mask, even if the entire work takes seconds. Welders are frequent clients of ophthalmologists, not only because they neglected the main rule, but also because they selected masks with insufficient protection from the effects of electric arc radiation. Arc welding is considered the most dangerous type of electric welding; the glow is the most intense, therefore, the degree of darkness of the protective mask should be high.

Damage during welding work can be caused not only by the intensity of radiation; most often, the harmful effects on the organs of vision and breathing are complex. They can be divided into 4 groups:

- Thermal. Damage is caused by high temperatures when working with electric welding with metal; injuries from hot fumes, hot metal or sparks are possible. It is recommended to choose protective masks made from materials that are resistant to high temperatures, with optimal body thickness, with fastenings, and without a tight fit to the skin.

- Chemical. As you know, most of the organs of vision and breathing are covered by mucous tissues, which are most sensitive to fumes, smoke, and chemical changes in the composition of the air.

Of course, in this case, a lot depends on what material you have to work with. A welding helmet cannot provide complete protection against chemical burns, but if you know that you will be working with metals containing nickel, chromium, etc.

, then when choosing, give preference to masks with the ability to filter air, completely closed like a helmet.

- Light. Not only the welder, but also third-party observers can get a light burn by just looking at the light radiation. Such a burn occurs from the radiation of ultraviolet and infrared waves, i.e. precisely those that we cannot see. Even a regular shield will do to protect against light radiation, but it is much more important to choose the right filter.

- Mechanical. Damage caused by sparks, fragments, etc. coming into contact with the eyes, skin, etc. Not only do metal shavings fly at speed, they are also hot, so contact with the eye, skin or hair can be costly to your health. The best option is to choose a welding helmet that protects the entire head, not just the face.

Types of protective filters

Light filters are a specific material that can filter out invisible and visible light spectra that are most harmful to vision.

Several types of light filters are used in welding helmets:

— Tinted glass. Used in classic old-style welding helmets. Impurities of non-ferrous metals, such as copper or nickel, are added to glass to reduce light transmittance. A higher content of impurities in glass provides lower light transmittance, and vice versa.

Glass tinting is marked according to both Russian (C4 - C8) and European (9 - 13 DIN) classifications. Upon external inspection, it is difficult to find differences in glass, however, C8 (DIN 13) has the greatest light protection.

To check the quality of the glass, it is enough to look through them at the incandescent lamp; through C4 the filament of the lamp will be clearly visible, through C8 the filament is almost impossible to see. If the result does not differ during inspection, this indicates poor quality of the product.

— Polymer filters. Not so long ago, materials appeared on the market with parameters superior to glass. Polymers are strong and lightweight, have ductility and the same shading properties as glass. Often combined with other materials to achieve better protective qualities. Widely used in combination with safety and tinting glasses.

- Chameleon. The most suitable filter providing complete protection. The automatically darkening filter adapts to any type of welding and different powers. The liquid crystal screen works on the principle of polarization of liquid metals.

Between the polarizing films are liquid crystals; under the influence of voltage, the crystals are aligned in such a way as to block polarized light.

In addition, chameleon filters provide constant protection from ultraviolet and infrared spectra; even in a faulty state, protection is provided from the most harmful radiation.

https://www.youtube.com/watch?v=KgCWzMFkQEw

Welding helmets with chameleon filters have gained popularity among users for their versatility and reliability. Such masks do not require recharging or third-party power; they are equipped with built-in lithium batteries and solar panels.

They are equipped with photosensitive sensors for better adaptability to changes in radiation; illumination of the arc zone is possible.

The filter in its initial state is transparent, which allows you to perform intermediate stages of work in the mask, or use it in other areas.

When choosing an automatic light filter, you should pay attention to the adjustment options. The sensitivity of the filter allows you to configure the filter to turn on/off depending on the brightness of the arc. A useful feature when working on sunny days, when the filter can turn on in response to the sun.

The opening delay time is another important adjustment, necessary to prevent premature opening at the end of welding, since after the arc is turned off, the metal is still burning.

Weight and dimensions of the welding helmet

A parameter that should not be overlooked is the weight of the welding helmet. Working with hot metal and welding is not easy, but if you add to this a heavy helmet with limited air access, then it all turns into torture. The mask should not be heavy; in addition, it is advisable to choose a model with the ability to adjust the headband, seat depth and angle of the mask. The presence of additional softening pads will also not be superfluous.

Let's sum it up

So, what should you first pay attention to when choosing a welding helmet:

— degree of protection from visible and invisible radiation;

— type of filter, quality of manufacture and attachment to the mask (no gaps between the filter and the mask, replaceable filters must fit tightly to the body);

— type of mask body design (closed helmet, visor, goggles);

— accessibility of adjustment elements, reliability of fastenings.

Source: https://club.dns-shop.ru/post/16789

How to set up a Chameleon mask for welding

01.08.2018

Like all other welding helmets, the Chameleon protects the welder's eyes from infrared radiation. The automatically adjustable light filter operates in a convenient mode: the screen changes the degree of darkness depending on the illumination of the working field. When the Chameleon welding helmet does not darken, it is dangerous to work.

You need to figure out why the screen is not working. Sometimes it is enough to change the power supply elements and charge the battery. A dirty screen reacts worse to light; it may need to be wiped. If this does not help, it is better to turn to professionals.

Adjusting the Chameleon welding helmet

To understand how the Chameleon welding helmet works, you need to know the basic structural elements of the protective device. The overview screen has a layered structure:

• fireproof glass that does not transmit ultraviolet and infrared radiation;
• layers of polymer crystals that change transmission capacity;
• In order for the filters to darken, they are connected to a current source;
• light sensors (from 2 to 4, depending on the model);
• connection diagram to the power supply.

At the moment of welding, a spark appears, then a luminous flux. The radiation triggers the sensors, the crystals are polarized, and the screen darkens. The welder sees the junction of metals within the range acceptable to the eye. After turning off the light source (electrode or arc), the sensors are triggered again. The screen brightens.

The tuning system regulates:

• the degree of screen darkening, it is selected according to the instructions, depending on the type of welding;
• sensitivity to changes in light flux;
• shutter speed, that is, the time period for turning off the light protection.

The adjustment is made at the preparatory stage, when the serviceability of the Chameleon mask is checked before work.

How to properly prepare a welding helmet for work is written in the operating instructions. Setting up a chameleon mask includes several steps:

• a convenient distance from the face to the protective screen is set, this is done by loosening the clamps;
• The position of the filter is adjusted, the comfort of viewing the working area depends on this;
• the intensity regulator is installed: it is determined in what mode the Chameleon welding mask is used, the operating instructions must contain adjustment tables;
• depending on the current strength of the welding machine and the illumination of the workplace, the sensitivity mode is selected; high is indicated by the letter “H”, low – “L”, minimum – “L0”, it is selected experimentally, it is easy to adjust the Chameleon welder masks during work;
• the holding time depends on the type of welding; for spot welding, a minimum interval is enough; for electrode welding, when a melt pool is formed, it is necessary for the screen to remain darkened longer.

Possible malfunctions and methods for eliminating them

1. The screen will not respond to light unless connected to a power supply. If the model is equipped with AAA alkaloid batteries or rechargeable batteries, charging indicators are displayed in the screen area. If the red light is on, it's time to replace the batteries. Solar panels are charged while welding. If the mask does not turn on, point it towards a light source for a few minutes.
2. If the screen darkens unevenly, check the distance from it to both eyes. Perhaps while they were adjusting the mask and adjusting it to the head, the filter shifted. It should be parallel to the face. Loosen the clamps and align the casing.
3. If the screen flickers during welding, it may be due to the outer glass. Sometimes it is enough to wash it. In case of mechanical damage (scratches, surface chips) it must be replaced. If the filter continues to act up, check the cleanliness of the sensor surface. When there are two operating modes (welding and grinding), check which position the switch is in. The screen may flicker when low-current welding in low sensitivity mode. The desired level can be established experimentally during operation.
4. The filter does not darken immediately in the cold. Viewing screens quickly change the degree of darkness in the temperature range from +50 to -10°C; Chameleons are not intended for harsh winters.
5. If the weld seam is difficult to see, there may be several reasons. Sometimes the film is forgotten on the protective glass. You can try cleaning it, switching the dimming control.

Source: https://svarkaprosto.ru/oborudovanie/kak-nastroit-masku-khameleon-dlya-svarki

How to adjust a chameleon welder's mask

Chameleon type welding helmets are so named because the light filter automatically changes the degree of darkness depending on the intensity of the light flux. This is much more convenient than a regular shield or an old type mask with a replaceable filter. Having put on the chameleon, you can clearly see everything even before you start welding: the filter is almost transparent and does not interfere with your work.

When the arc is ignited, it darkens in a matter of seconds, protecting your eyes from burns. After the arc goes out, it becomes transparent again. You can carry out all the necessary manipulations without removing the mask, which is much more convenient than raising and lowering the protective shield and much better than holding the shield in your hand.

But a wide selection of different priced items can be confusing: what is the difference, and which one is better? We'll tell you how to choose a chameleon mask below.

Chameleon welding masks come in a wide variety. Choosing is not an easy task at all. Moreover, it is not so much the appearance that is important, but the quality indicators

Light filter in a chameleon: what is it and which is better

That small glass that is installed on the welding helmet is a real miracle of science and technology. It contains the latest achievements in optics, microelectronics, liquid crystals and solar energy. This is the “glass”. In fact, this is a whole multi-layered cake, which consists of the following elements:

liquid crystal cells (several layers - the more, the better);

Approximate composition of an automatic light filter in a chameleon welding mask (To increase the size of the picture, right-click on it)

The main and main advantage of a chameleon welding mask is that even if it did not have time to work, it will not let in ultraviolet and infrared radiation (if the mask was lowered). And the degree of protection from these harmful effects does not depend in any way on the settings. In any case and with any settings, you are protected from these types of harmful influences.

But this is only if the “pie” contains the appropriate filters and they are of the proper quality. Since it is impossible to check this without special devices, you have to rely on certificates. And masks must have them.

Moreover, on the territory of Russia only two centers can issue them: VNIIS and the Federal State Budgetary Institution at the All-Russian Research Institute of Labor Protection and Economics.

To be sure that the certificate is genuine, its number can be found on the official website of the Federal Service for Accreditation at this link.

This is a form on the Rossaccreditation website for checking the certificate. You can fill in only the number, leaving all other fields empty (To increase the size of the picture, right-click on it)

The certificate number is entered in the appropriate field and you receive the validity date, information about the applicant, and the manufacturer. A small note: the abbreviation RPE stands for “optical personal protective equipment.” This is what a welder's mask is called in bureaucratic language.

If such a certificate exists, the following message will appear. By clicking on the link you will see the text of the certificate (To enlarge the image size, right-click on it)

The most important thing is that you make sure that this product (by the way, compare both the name and model) is safe for your health.

Classification of automatic welding filters

Since the light filter and its quality are the key element in this product, you should start choosing a chameleon mask with it. All its indicators are classified according to the EN379 standard and must be displayed on its surface through a fraction.

One of the filters in the chameleon mask. Its classification is indicated in red

Now let’s take a closer look at what is hidden behind these numbers and what they should be. Each position can contain a number from 1, 2, 3. Accordingly, “1” is the best option - first class, “3” is the worst - third class. Now let’s talk about which position displays which characteristic and what it means.

Explanation of EN37 classification

Optical class

It reflects how clearly and without distortion the picture will be visible to you through the filter. Depends on the quality of the protective glass (film) used and the build quality. If "1" comes first, distortion will be minimal. If the values ​​are higher, you will see everything as if through a crooked glass.

Light scattering

Source: https://moy-instrument.ru/instrumenty/kak-otregulirovat-masku-svarshhika-hameleon.html

Chameleon welding masks. What you need to know before you buy

Whether welding is carried out in a factory or garage, every welder needs protection to prevent eye damage. Generally, if you spend the money on a good welding helmet, it will increase comfort, improve your ability as a welder, result in higher quality welds, and keep you safe.

Unfortunately, choosing a helmet can be confusing if you are not familiar with lens shading technologies and government welding safety standards. This article will help you clear up this confusion and pay attention to several important points, knowledge and understanding of which will help you buy a reliable mask.

The first question when purchasing a welding helmet is what type of lens is right for you.

Classic welding helmets are very similar to those they had 50 years ago. Although modern masks are made of molded plastic rather than thick leather as in the past, these helmets are capable of providing basic protection for the face and eyes when welding, and can be purchased at reasonable prices (from 100 hryvnia, for example, FORTE M-004 Welding Helmet ) .

Let's pay attention to the lens - or filter - this product is made of dark tinted glass, most often with a degree of darkness No. 10DIN, provides protection against ultraviolet (UV) and infrared (IR) radiation. When the welder is ready to start working, he quickly nods his head or lowers the protective part of the mask (with the help of simple equipment), covering his face, before lighting the welding arc.

When the welder finishes part of the work, he, on the contrary, tilts his head back with a nod of the protective part of the mask to look at the workpiece and to make adjustments for the next seam. Although standard helmets are inexpensive, they have a number of disadvantages: it is difficult to keep the electrode/wire in the correct position once welding has begun while the helmet is protecting the face, especially for beginners.

When welding in a confined space, such as under a car or trailer, there is not enough room to flip the helmet up and down. When working on stairs, you can tilt your helmet back so much that you end up falling on your back. Repeated, repetitive up and down movements of the head cause neck discomfort after a full day of welding. This may lead to medical complications.

Lastly, raising and lowering the helmet is inefficient, especially when there are a lot of tacks to be made.

An automatic darkening welding helmet can solve all these problems forever. People call such masks “Chameleon” because they “change the color” of the light filter. Instead of a standard piece of tinted glass, auto-darkening helmets have electronic colored lenses and often come with adjustable features to make welding as comfortable as possible. These functions are described below.

Auto-darkening lens filter or ADF

This is a special liquid crystal display (LCD) that is similar in design and technology to that used to display numbers on a digital alarm clock. Most cartridges are powered by a combination of battery and solar energy. Several light sensors are installed near the lens to detect the welding arc.

When the lens is not activated, the auto-darkening LCD filter is typically in the No. 3 or No. 4 dark zone, which is enough to make it relatively easy to see through the filter—similar to looking through sunglasses.

This makes it easy to light the welding arc because the welder can see the position of the stick electrode holder or MIG, TIG torch in relation to the material to be welded. Once the arc is ignited, the sensors on the helmet darken the lens in degrees of darkness ranging from #9DIN to #13DIN, depending on the settings, hundreds of times faster than you can blink an eye.

Since the filter has UV and IR coating, your eyes are always protected from harmful rays, regardless of whether the filter is in active or inactive mode. So, the auto-darkening mask is always ready to go. When using such a mask, you will say “no” to sloppy starts because the arc did not move.

Fixed or adjustable shade level

If most of your welding jobs involve one type of material, such as the same thickness of steel, same welding process, same electrode, same welding current, then a fixed 10 DIN shade is all you'll ever need will be needed. Standard chameleon masks have a fixed filter darkening degree.

However, most people weld a variety of metals such as steel, stainless steel, aluminum, and these metals can have different thicknesses and some require different welding methods such as electrodes, MIG and TIG for specific workers places This means that the welding current can vary from 40 amps to over 200 amps. All this can radically affect the brightness of the arc.

  To properly protect your eyes and get a better view of the weld pool, it is necessary to have filter darkening controls. These controls are either located inside the helmet on the lens or on the outside of the welding helmet. The degree of darkness in most adjustable filters can be changed in the range from DIN No. 9 to No. 12 or No. 13.

There is very little chance that you will need to use a #13 shade unless you are welding at extremely high amperages or have sensitive eyes.

Switching speed (filter response time)

When you search online stores for a chameleon welding helmet, you will notice that most manufacturers pay attention to the filter switching speed for advertising purposes. This value indicates how quickly the filter will switch from a natural (light) state—typically a #3 or #4 DIN shade—to a dark state when welding begins.

The sooner a welder's eye is protected from high-intensity light, the better. A too slow arc flash reaction time will cause eye irritation. Entry-level lenses are often designed for switching speeds of 1/3600 of a second. Intermediate and professional level masks are typically designed for switching speeds greater than 1/16000 of a second.

Simply put, the faster the switching speed, the more expensive the helmet and filters. So why pay more for a faster filter? In one word: comfort. If you spend all day welding and the filters are designed to react at 1/3600, your eyes will feel tired at the end of the day and may have the dry, tingling sensation caused by arc flashes as mentioned earlier.

At higher switching speeds, these effects are eliminated.

Solar panels, battery life

Some chameleon welding helmets are designed with a built-in, non-replaceable battery that is charged via a solar auxiliary panel.

These helmets often require a charging period in direct sunlight before first use, and a similar charging period if they are stored for a long time, which can be a real problem when you want to start welding work as quickly as possible.

The disadvantage of this type of mask is the fact that as soon as the battery wears out, the light filter does not work. It is better to buy a welding helmet in which the filter is powered by a replaceable battery and a solar panel, which allows you to start welding right away.

Choose a filter with AAA batteries due to their low replacement cost and worldwide availability. Choose lithium batteries for longer life, but note that lithium batteries are more expensive than regular batteries. The service life of a regular AAA battery is about 2000 hours for MIG/MAG, MMA and other types of welding.

Adjustable sensitivity and delay controls

Both regular and professional level chameleon welding helmets usually have the ability to adjust the brightness of the welding arc at which the filter darkens. Light sensitivity control can be useful when welding at low amperages - especially in a process like TIG, where the arc is not as bright as with other welding processes.

Latency control is another very useful feature. This setting allows you to set the length of time the filter remains in a dark state after welding stops. When you need to make tacks and you have a large amount of work, choosing a small delay will help you get the job done faster.

A longer delay time can be useful when welding at very high welding currents to protect the eyes from looking at the welding area when the arc goes out but the weld puddle is still brightly lit. Depending on the manufacturer and price, these functions are often controlled by toggle switches for high/low sensitivity and high/low latency.

A professional chameleon welding helmet, as a rule, is equipped with the maximum number of various adjustments so that the welder can perform his work with comfort and quality.

Chameleon Welding Helmet Weight

The helmet's low weight minimizes stress on the welder's neck and reduces fatigue while increasing comfort. You will notice a big difference between a mask that weighs only 450 grams compared to one that weighs 900 grams or more.

While 450 grams may not seem like much weight when it comes to making a few short welds, it can be a huge weight when working throughout a work shift. Remember the old trick of holding a book at arm's length. It's easy for the first few seconds, but the book feels like it weighs a ton after a minute or two.

The same can be said for a heavy welding helmet. You need to understand that sooner or later, the heavy weight of the welding helmet will cause discomfort.

Not all helmets on the market meet modern safety standards. There are government standards that welding helmets must meet. But in our time, nothing prevents the manufacturer from falsifying these standards, chasing cheapness. The reaction rate may be much slower than stated, exposing your eyes to the welding arc. What are you looking for? If this is a reliable mask at an affordable price, then come to our online store «

Source: https://svarka.zp.ua/svarochnyie-maski-chameleon-chto-nujno-znat-prejde-chem-pokupat

How to choose the right chameleon mask for welding? Main nuances

In order to competently and correctly choose a chameleon welder mask, you need to follow all the rules and recommendations that we will discuss in today’s material.

In general, a chameleon mask is a modern tool for a welder with an active filter, which automatically darkens when a bright light source is detected. Why is this necessary?

When you use a cheap regular welding helmet with black glass, then when you start the procedures you cannot see what is happening at the welding site.

So generally you need to aim blindly, or you have to raise the mask, aim and lower the mask just before you start welding. Even professionals may not catch the moment, and welding may begin before you lower the mask.

This is called “catching a bunny” in welding slang. In fact, this is not funny, because the ultraviolet radiation and infrared radiation of the arc at close range can seriously damage the retina. In addition, you can get a burn to your facial skin.

So that you can start welding and at the same time see what is directly on the part, glass with automatic dimming was invented, or in common parlance - a chameleon. How does it work?

Light filter

The chameleon filter consists of several layers:

• glass;
• a special filter that blocks dangerous ultraviolet infrared radiation;
• electronic circuit;
• liquid crystals for darkening glass.

Arc Detection Sensors

What is necessary for this filter to work correctly? It is important that he catches the moment when welding begins. For this purpose, there are 2-3-4 arc detection sensors. The bigger, the better. For household and semi-professional masks - two sensors, for professional ones - 3 and 4 sensors.

Arc detection sensors can be found on the outside of the filter. These are small square holes. In the photo of the mask below there are three sensors.

Batteries

In addition, solar panels can be seen on the front panel. This is used in many masks to ensure that the welder changes batteries as little as possible. Solar batteries provide convenient and long-lasting operation without unnecessary problems.

Additional food

As a rule, good masks have one or even two additional power elements to guarantee operation; they can be replaceable or built-in. If it is built-in, then the mask can be used for 4-5 years. After this period you will need to buy a new one.

In a mask with replaceable batteries, you open the compartment, change the element, and use it for a year or two.

On the inside of the filter you can see wheels and switches. There are several adjustments here. The main adjustment is the dimming adjustment. It can be external and internal.

Dimming adjustment

If you choose external adjustment, then during the welding process you can adjust the filter to make it darker or lighter without removing the mask or stopping.

When the adjustment is inside, you need to stop, remove the mask, put it on again and continue working. For amateurs this is normal, but for professionals who have to cook a lot and quickly, this is unacceptable.

Area of ​​visibility

What you should pay attention to next is the size of the scope. Different masks have different sizes. The more, the better, as usual.

Especially when welding occurs within the boundaries of some spatial structures, visibility is necessary so that you do not collide with surrounding objects. Professionals prefer the widest field of view.

Adjusting sensitivity

Next we move on to what we can see inside. The same goes for adjustments. Adjusting the sensitivity will determine whether the filter will close only from the welding arc, or generally from any bright light sources. This is necessary in the case when you have stopped welding, and at the moment of stopping the metal is still hot and glowing.

If your filter opens at this moment, you will receive a light shock to your retina. If there are many such flashes, your eyes will get tired. Sensitivity adjustment increases the sensitivity of the filter before light emission is reduced to a certain safe level.

Adjusting the delay

Next to it is the delay adjustment. Essentially the same function, it allows you to maintain a pause between the end of welding and opening the filter. Useful if you have blocked the light with an electrode, or if your electrode is stuck.

The filter may open, but welding continues! The moment will be unpleasant. So having delay adjustment is a certain level of security.

Attaching the welding helmet

The shield itself, in addition to the filter and the shield, must be attached to the head and it must be comfortable. If it is loose, it will fall off; if it squeezes your head too tightly, there will be discomfort.

More professional masks have a complex headband, with several types of clasps or adjustable coverage. Adjustable coverage keeps the mask securely in place.

Switching between grinding and welding modes

On some internal panels there is a grinding-welding adjustment. This lever allows you to disable the arc detection function so that the mask can be used as a regular cutting shield.

Remember that the biggest danger when welding is invisible ultraviolet radiation, and filters protect against it. But without equipment you can’t check whether the filter really protects your eyes or not.

Therefore, look to see if the brand has the manufacturer’s logo. And if the manufacturer is known for its quality, then you can be sure that the mask will protect your eyes.

Finally, video: choosing a welding helmet - advice from a professional.

Source: https://metmastanki.ru/kak-vybrat-masku-chameleon-dlya-svarki/amp

How to Choose a Welding Helmet, What is a Chameleon and How It Works

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You can always watch the fire burn, the water flow, but not the welding arc. 

If you do not use a welding helmet when welding, this will certainly lead to injury to the welder:

• burns of the skin of the face and neck under the influence of radiation from the arc, high temperatures and splashes of molten metal;
• burns of the retina by ultraviolet and infrared light, which leads to loss of vision ;
• inflammation of the cornea (ophthalmia);
• direct entry into the respiratory tract of harmful smoke and gases.

What is a welding helmet?

A welding mask is an individual means for protecting the eyes, respiratory tract, as well as the skin of the face and neck of the operator of a particular welding machine from concentrated broad-spectrum radiation (infrared, ultraviolet and thermal), metal splashes, sparks and harmful gases. The skin is protected by a completely opaque and heat-resistant plastic part of the mask, and the eyes are protected by a built-in window with a light filter that does not allow harmful radiation to pass through. The entire structure is placed on the welder’s head using a forehead mount, the size of which is most often adjustable.

A welder's mask must be used when welding with electric arc, semi-automatic and non-consumable electrode.

Types of welder masks

1. A welding shield is the simplest analogue of a mask. 

   Pros: cheap.

   Cons: passive filter - you can see through it only when the arc is already burning, the degree of darkness cannot be adjusted, for this you need to replace the filter. Fulfills its purpose only during welding. There is a high probability of injury to the eyes at the time of tack welding and completion of welding (from the radiation of hot metal). Inconvenient - you constantly need to hold it with one hand.  

1. A mask with a passive light filter is attached to the head.

   Pros: no need to constantly hold your hand.

   Cons: visible through the filter only during welding. Each time, before igniting the arc, you need to nod your head to lower the mask, and after finishing, raise it with your hand. The risk of eye injury remains high.

1. Welding helmet “Chameleon” - with auto-darkening function when igniting the arc.

   Pros: no need to constantly hold your hand; no need to raise and lower before and after ignition; protects eyes and skin from harmful radiation not only during welding; It is possible to adjust the darkening depending on the type of work, even during the welding process.

   Disadvantages: the price is higher than other types of masks, the darkening speed depends on the operating temperature (it is better not to use such a mask in cold weather); has batteries that have a limited service life; the weight is a little more than other varieties, but not always.

Since the last mask is the most popular and safest, let’s consider its operating principle and the important nuances of choosing when purchasing in more detail.

How does the Chameleon automatic welding helmet work?

The main difference between “Chameleons” and other masks is the light filter. In it, it is made not of ordinary tinted glass, but of one or more liquid crystal (LCD) screens separated by polarizing films.  

1. Invisible radiation sensors react. They are located on the front side of the mask and are directed towards the work area. After ignition, the electric arcs transmit a signal (most often analog) to the electronic board;  
2. The board converts the signal. LCD screens are powered by batteries (lithium or solar batteries);
3. The filter crystals line up. Under the influence of electric current, liquid crystals become a special structure in such a way that ultraviolet and infrared light does not pass through the filter;
4. The sensors respond to the cessation of radiation. After welding is completed, the radiation from the arc and seam disappears, the sensors stop transmitting the signal to the board;
5. The electronic board cuts off power to the screens. After the sensors react to the completion of welding, the board waits for a delay configured on the mask, or stitched, and turns off the power supply from the crystals. The screens become transparent.

An important advantage of auto-darkening masks is the filtering of invisible and polarized light when inactive. That is, the mask will protect your eyes not only from the arc, but also from the harmful radiation of hot metal, the sun and from glare when working outdoors.

Also, when working with an angle grinder or other spark-producing tools, you can, without removing it, turn on the grinding mode on the Chameleon, in which the filter will not be mistakenly darkened. This significantly speeds up the process of “welding - cleaning / grinding seams - continuing welding”.

How to choose a chameleon welding helmet?

Each “Chameleon” mask has a number of characteristics that determine its quality and ability to be used for certain welding jobs. Let's look at each next.

Filter response time 

The maximum permissible dimming time is 1 millisecond.

The smaller it is, the safer and more comfortable it will be to work with the Chameleon.

This is the main parameter of an auto-darkening welding helmet, which directly affects the safety of its use. If the filter operates too slowly, the radiation from the electrode or wire will have time to harm the eyes.

It is worth noting that the “Chameleon” passport indicates the value when used at room temperature. As the temperature decreases, the filter's response rate will decrease. It is not recommended to use such masks in cold weather.

Optical filter class

Indicated in the documentation or on the mask itself in three numbers, for example 1/2/3. The closer these numbers are to 1, the higher the optical class of the device, and therefore its quality.

1 is the coefficient of transparency, 2 is the scattering of light, 3 is the degree of uniformity of the darkening of the radiation. 

Adjustments

1. Adjustment of the degree of dimming in the active state. It’s most convenient when it is located outside the mask and you can adjust the filter while working. Without this adjustment, it will be impossible to weld different types of inverters and different materials (see table above).
2. Setting the sensitivity of the filter, or rather the sensors.

   It is also almost a mandatory procedure to be able to work in different lighting conditions and set up protection against radiation from the heated metal or electrode.

3. Adjusting the delay for turning off the filter. Designed to protect against radiation from hot metal after the arc has been extinguished. A delay of up to 1 second is usually sufficient.
4. Mask size settings. This parameter must be in any mask.

   Three types are desirable: side clamp, seating depth and adjustable distance from the filter to the eyes. If the mask falls off or is not fully secured to the head, this may not only cause discomfort during work, but also lead to injury.

It will be most convenient and productive to work if at least a set of dimming and filter sensitivity adjustments are located outside the mask.

This is especially true when welding materials of different thicknesses (it is necessary to constantly change the welding current) and when individual respiratory protection is used.

Also, all adjustments can be smooth or stepped. With smooth, more precise individual adjustment of the parameter is possible, while with step, only according to the specified values ​​​​from the manufacturer.

Number of sensors

2 sensors are considered the norm - this is enough to trigger in 99.9% of cases. But the greater their number, the less chance there is of “catching a bunny” from a malfunction of the sensor or from an inappropriate angle of incidence of radiation on it.

Equipment

Most manufacturers complete their masks with additional internal and external protective glasses and accessories. This is a significant advantage, since during operation these glasses necessarily lose their light transmittance.

How to check the darkening of a filter in a store?

1. Look at the sun in the “Chameleon” mask. The filter should close and open after a couple of seconds. This is normal because the sun emits a constant stream. The sensors only respond to variable intensity;
2. Look at an incandescent light bulb. The screen should darken and not open, since the current in the network is alternating and the lamp blinks at a speed of 50 Hz;
3. Turn on your smartphone's flash in front of the mask.

   You should notice it briefly, after which the filter will close. This is due to the fact that the flash immediately lights up at maximum intensity. And when welding, a spark appears first, to which the sensors react first, and only then the arc.

4. Put on your mask and strike a flint lighter in front of you. A working mask should respond every time.

If the filter does not respond to several sources, you should check the battery charge.

If they are charged, but the mask does not pass the test, it is better to buy another one.

How to choose glass for a welding helmet?

1. Decide on tasks. If the glass will be used for auxiliary work in the welding process, then a 4 DIN shade may be sufficient. But it is better to use the same one as the welder;
2. Decide on the type of welding. When welding directly, it is necessary to select glass depending on the type of welding and welding current. For example, when TIG welding with a current of 125-200 A, the optimal shade is 11 DIN (see table above);
3. Decide on the filter type. The best welding helmets are definitely those with the “Chameleon” automatic filter. If you rarely use welding and mostly use the same model, then you shouldn’t overpay and it’s better to buy regular darkened glass.
4. Select size. Here you definitely need to start from the mask you are using and select it according to it. Of course, the larger the glass, the more convenient it is to work. But when choosing a “Chameleon”, it is worth considering that large filters are more fragile and more often fail (they do not begin to darken over the entire area).

Source: https://dnipro-m.ua/news/svarochnye-maski-chameleon-chto-i-kak-vybrat-pravilno/

How to choose a Chameleon mask and how to check it when purchasing

Date added: 11/13/2017

A welder's mask is necessary for anyone who uses welding equipment. From this article you will learn: how to choose a “Chameleon” welding helmet and how to test it without welding before purchasing, what to look for when choosing and much other useful information.

Before purchasing a mask, you should carefully read its passport. Even a very simple mask with an automatic light filter (ASF) has a passport, which indicates its degree of darkness, recommendations for the type of welding (MIG, MAG, MMA, TIG) and the type of battery.

How to choose a welding mask? Read more about all the intricacies of choice further in our article.

What is a “Chameleon” welding mask and how is it different from a regular mask?

The welding helmet protects the worker from IR and UV radiation, high temperature, harmful smoke, gases, sparks and metal droplets during the entire welding process. Ordinary masks are inexpensive and practical, but less convenient to use. Unlike a regular mask, which always has the same degree of darkness, the Chameleon can automatically change it based on sensor signals.

It is important to know that an automatic light filter only dims the normal brightness of visible light. Ultraviolet and infrared radiation are blocked by special protective layers and film filters.

Advantages of the Chameleon mask compared to a conventional welding mask:

• The work efficiency of a welder wearing a mask with ASF increases significantly. The worker manages to do more work in the same amount of time. It more accurately controls the welding arc from the very beginning of its combustion and the relative position of the parts during the welding process.
• A worker with a Chameleon has both hands free during welding. There is no need to wear another mask if you need to perform metalwork work - cut an edge, fit sheets of metal more tightly, clean a seam.
• There is no need to change filters, as when working with a regular mask, when the current changes significantly, or when choosing a different welding mode.
• The Chameleon dims automatically - you don’t need to put on or take off the mask, everything is clearly visible in it.

After weighing all the factors, decide for yourself what is better for you - a regular mask or a “Chameleon”.

Chameleon mask device

The mask consists of a body, a block of light filters, batteries, dimming adjustment knobs and a headband.

part of the Chameleon mask is a block of light filters, which consists of several layers of polarizing crystals placed in a vacuum. Light filters can change their light transmittance depending on the level of voltage applied to them.

There are several sensors on the outside of the mask that measure the brightness of the light and instruct the filter to close.

General recommendations when choosing a Chameleon welding helmet

It is best, of course, to focus on the opinions of real people who use such masks. We recommend listening to the recommendations of real welders, not salespeople from stores. Welders work with masks every day and have a better understanding of what they are talking about. When choosing a Chameleon welder’s mask, their reviews about the comfort of long-term work, the ease of switching settings and the practicality of using the mask are especially valuable.

The presence and number of adjustments of the light filter greatly influences the price of the Chameleon welder’s mask. There are masks with smooth and step adjustments, without adjustments, with manual adjustments of sensitivity and delay of dimming after the arc has died out. The delay allows you not to strain your eyes from the glow of the molten metal of the weld pool immediately after the arc breaks. The degree of darkness is adjusted automatically within a given range, depending on the brightness of the arc.

Internal adjustments are less convenient; to change them you will have to interrupt the welding process. External ones (on the outside of the mask) are more convenient; they can be adjusted during welding, but the settings may be lost if the mask is dropped or if it is accidentally touched. This is important to know if you are trying to choose the right Chameleon welder mask for yourself.

How to choose a Chameleon welder mask for safety and autonomy

There are several types of power supply for the mask filter:

• From a battery (battery or accumulator). It would be better if it is removable and to replace it you do not have to disassemble or replace the entire internal filling of the mask.
• From solar panels . Used in more expensive models of masks.
• Mixed . Battery together with solar battery.

It would be good if the mask had a low battery indicator. Then you won’t have to, having done half the work, urgently look for and change the batteries in the mask.

When choosing a welding mask, it is important to know about the number of sensitivity sensors. The more there are, the better. One sensor may not work due to a layer of soot, contamination, poor location, or it may be blocked by some object or obstacle.

For entry-level masks, 1-2 sensors are usually sufficient, for example, START-TREND with ASF 300. On professional masks there are 3-4 of them, as in the START-ARGON mask.

The sensors are located in different corners of the filter block of the mask, at the maximum distance from each other.

A good mask ensures high injury safety for the worker. The aerodynamics of good mask models are designed so that the fresh air that the worker breathes enters the space under the mask from the area as far away from the working area as possible. This reduces the amount of harmful gases that the welder breathes.

How to choose the right Chameleon mask for welding work based on ease of use

Some masks have a number of features that significantly increase the welder’s comfort and influence the choice of a chameleon mask.

• Possibility of installing additional diopter lenses directly on the light filter, as in the START-MASTER mask with ASF 605. Experienced welders often need to work in glasses in order to clearly see the welding site. Diopter lenses in the mask allow the welder to work without glasses, and he is not distracted from the welding process.
• Comfortable ergonomic headband. This is the most important indicator when choosing a Chameleon welding mask. Adjustments to suit head size are required. Wide and soft pads. Possibility to change the planting depth and adjust the distance from the eyes to the viewing window. Relevant for workers wearing glasses.
• Adjusting the angle of the mask at which it begins to lower. Possibility of fixing the mask at different angles.
• Smooth lowering of the mask after nodding the head.

Chameleon welding helmets, how to choose based on reviews

Typically, the best reviews come from masks in the upper price range. Positive reviews are influenced by the following features:

• Mask weight and size . The smaller and lighter the mask, with the same functional parameters, the better.
• Viewing window size . The most common sizes are 91 mm x 39 mm and 96 mm x 39 mm. The maximum size of the viewing window is 100 mm x 60 mm for the START-ARGON model with ASF 705. A large viewing window is more convenient.
• Switch welding or machining . Its presence is assessed very positively in most reviews regarding the choice of a chameleon welding helmet. Before and after welding is completed, there is often a need to carry out mechanical processing of a seam or part. Cut out the fistula, sand down the defects of the lower layer, beat off the slag crust, grind off the influx. This switch disables the darkening of the mask from stray sparks during mechanical work. Most welders note in their reviews that such a switch is very convenient and saves time. Its presence has virtually no effect on the cost of the mask.
• Mask material . Our masks are made only from high-quality plastic. Bad plastic can burst from overheating in the sun or at low temperatures.

How to choose a Chameleon welding mask by price

Click to enlarge

Budget models of masks cost from 950 rubles. These are quite simple but reliable masks that are quite suitable for household use when welding with low and medium currents in the MMA mode. The adjustments are stepwise, powered by solar panels, the quality of the plastic is average.

When choosing a Chameleon welder mask at a price in the range of 1.5-2 thousand rubles, you can count on more serious models. Such masks are suitable for welding with consumable electrodes at high currents, MIG-MAG and Plasma modes. They already have a combined filter power supply system, the ability to install diopter lenses and smooth external adjustments. Typically, masks of this price are used in workshops, garages and small construction sites.

If the price of a chameleon welding helmet is more than 2000 rubles, then our recommendation is START-OPTIMA with ASF 615 or START-ARGON with ASF 705. The masks in the upper price segment have everything: they are suitable for working with any currents in all welding modes (in including TIG welding), smooth dimming and delay adjustments, excellent aerodynamics, large viewing window, 4 sensors and several dimming ranges, durable and lightweight plastic.

How to check a Chameleon welding helmet when purchasing

The peculiarity of the operation of light filter sensors is that they react only to sudden changes in high-intensity lighting. There are several ways to test a mask. First you need to turn on the filter, and then:

1. If you look at the sun in a mask, the filter will close once and open almost immediately, since there is a constant light flux from the sun. Try opening and covering the sensors from the sun several times. The filter must be closed every time.
2. Look at a regular incandescent lamp in the mask. The filter should close and not open all the time while the lamp is shining near the mask. In a household network there is alternating current, which changes its direction 50 times per second. This is invisible to the eye, but the sensors must react.
3. Another way to check a chameleon welder’s mask without welding is to strike a lighter in front of the mask several times. The filter must be closed after each use.
4. Use your smartphone's flash. The filter should close with minimal delay, this is normal. You may notice a small bit of flash early on before the filter closes. The welding arc does not light up immediately, a spark appears first, the sensors react to it, and when the arc lights up a little later, the filter is already closed. And the flash goes off immediately at maximum brightness.

If none of the methods for checking a Chameleon welder’s mask upon purchase worked, it’s worth checking and replacing the batteries. If the mask has solar panels, leave the mask in the sun to charge them.

Several important features of Chameleon masks for welding

• Chameleon masks have restrictions on working at low temperatures. Typically the operating limit is -5-10 °C. The response time of automatic dimming can increase significantly as the temperature drops. Some insurance in this case is the proximity to molten metal at a high temperature and the hot breath of the welder while working. In the vast majority of cases, this is enough for the mask to work properly even at such temperatures.
• It is best to store the mask with ASF in the switched off state, so as not to discharge the batteries. You should not place the mask with the light filter down, as scratches and abrasions on the glass can then limit visibility and make work uncomfortable.
• Some expensive mask models have a forced ventilation system to prevent fogging of the viewing window. This is especially useful if work is carried out in closed and poorly ventilated areas.
• Filter response time. The shorter the response time, the less tired the welder’s eyes are. Normal time is considered to be from 1/10000 of a second to 1/35000 of a second.
• Trigger sensitivity. The operation of the light filter is influenced by many factors: welding mode, welding currents, level of sun illumination, reflected light, influence of welding arcs of other welders.

This is all important to consider if you are thinking about how to choose a Chameleon welding helmet.

We recommend investing once in good equipment that will ensure high comfort for the welder.

Source: https://kronsvarka.ru/poleznoe/stati/vybor-maski-hameleon

How to set up a chameleon mask for welding

"Chameleon" is a thing! Ask any welder who has switched to one from a regular mask. You no longer need to take it off every time to look at the work surface, and then put it on with a nod. You can both weld and clean the seam while wearing a mask - this is especially convenient for large amounts of work and welding in hard-to-reach places. Let's talk about this in more detail.

If we talk about the operation of the Chameleon welding helmet in a few words, then everything is simple: when the arc is ignited, the protective screen darkens, thereby protecting the user’s eyes; when the arc goes out, the viewing window becomes transparent again.

It is because of this ability to adapt to changing conditions that it received its name - by analogy with a chameleon changing its color. Welding helmets working on this principle appeared about 25 years ago and were very expensive back then - the process of producing light filters was just developing and was very expensive.

Today, progress has stepped far forward, and “chameleons” have become available to everyone: both professional welders and amateurs.

If you are thinking about buying a “Chameleon” mask for welding work, you probably have many questions. We will try to give as comprehensive answers to them as possible.

What is special about a protective filter?

The Chameleon mask does not have a regular light filter built in, but a liquid crystal filter. It consists of several layers of crystals and layers of vapor barrier film placed between them. When current is applied to the crystals, they become structurized—the light passing through them is blocked. The light filter is powered by a solar battery built into the mask body.

Additionally, many models include lithium batteries. Photosensors on the front side of the product react to the occurrence of an arc - the light filter darkens. When the arc goes out, it returns to a transparent state. The outer side of the glass is coated with a protective compound, which, even when the filter is turned off, prevents the passage of infrared and ultraviolet radiation.

This ensures the welder's eyes are protected at all times.

Is there a risk of “catching the bunny”?

As you know, the glow that appears when the arc is ignited reaches the welder’s eyes in less than a second. Therefore, to effectively protect the eyes, light filters with a response speed from 100 μs to 1/10,000 s are inserted into Chameleon masks. During this time, the screen has time to darken, and the glow from the arc does not blind the person.

By the way, for more effective protection, many models sensitivity . Depending on the lighting of the working area and light interference from heated metal, the degree of protection is adjusted.

You can also adjust the delay time for opening the light filter after the arc dies out, for example, so that the afterglow from the hot metal does not hit your eyes.

Such features of Chameleon welding helmets are important in the professional field; they help make work safer.

Is it convenient to sand and clean the seam in a mask?

The Chameleon light filter is designed to work in two modes: welding (the viewing window is darkened) and grinding (the window is transparent). To process a seam mechanically, there is no need to remove such a mask: the working surface is clearly visible through the glass.

At the same time, the mask provides additional eye protection from flying particles of metal and slag. By the way, to protect the filter itself, an outer glass is provided - this prevents the appearance of scratches and chips on the liquid crystal surface.

The glass is replaceable, so as it wears out and visibility deteriorates, it is replaced.

How do expensive filters differ from cheap ones?

As we said at the beginning of the article, Chameleon masks are now available to a wide range of buyers. This is evidenced by numerous reviews in online stores and discussions on forums. The price range for products is wide. For example, for work in a garage or in a country house there are models that cost about 1,500 – 2,000 rubles, for professional use – up to 3,000 – 4,000 rubles.

What is the difference between them? The quality of filters in budget models is an order of magnitude lower. Such elements are not able to provide adequate protection if the welder is looking at the arc at a large angle. The safe deviation can be up to 10, while for professional ones this value reaches 30.

Inexpensive filters react less well to arcing in dusty conditions, and the response time may increase at sub-zero temperatures. If you have to weld a couple of times a month in the garage, then the listed disadvantages will not be significant for you, but you can save a lot.

In the professional sphere, these aspects will be significant, since the master is exposed to the negative effects of welding every day. You shouldn't skimp on your health.

Want to increase your productivity and protect your eyes while welding? Don't waste time taking off and putting on a mask - spend it working! Buy a Chameleon mask and start cooking in a new way. At heights, above your head, in hard-to-reach places - with this equipment you will be comfortable! You can select and order the appropriate model in the appropriate section of our website.

Source: https://steelfactoryrus.com/kak-nastroit-masku-chameleon-dlya-svarki/