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Comparison Edon ED-9000 vs Forte MC-3500

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Edon ED-9000
Forte MC-3500
Edon ED-9000Forte MC-3500
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Typechameleon helmetchameleon helmet
Specs
Light filtering levels4 DIN4 DIN
Min. degree of darkening9 DIN9 DIN
Max. degree of darkening13 DIN13 DIN
Protection from UV/IR13 DIN16 DIN
Turn-on time50 ms
Filter class1/1/1/2
Filter viewing area (WxH)92x42 mm
Filter cartridge dimensions (WxH)110x90 mm110x90 mm
Filter cartridge thickness10 mm9 mm
Optical sensors22
Operating temperature-5 – 55 °C-5 – 55 °C
Helmet weight490 g460 g
Filter functions
Darkening adjustmentexternal mechanicalexternal mechanical
Sensitivity adjustmentinternal mechanicalinternal mechanical
Delay time adjustmentinternal mechanicalinternal mechanical
Colour renderingstandard (shades of green)standard (shades of green)
Design features
internal and external controls
internal and external controls
Color
Added to E-Catalognovember 2016november 2015

Protection from UV/IR

The degree of protection against infrared and ultraviolet radiation provided by the complete mask light filter.

Such protection is relevant primarily when working with electric welding: it is the electric arc that produces a large amount of IR and UV radiation. Exposure to these types of radiation on the skin can cause burns, and ultraviolet light is also harmful to the eyes. The degree of protection in this case is indicated in DIN units, and the larger the number in such a designation, the higher the degree of protection. In this case, 12 DIN is considered the minimum acceptable indicator, however, masks / goggles can be found on the market with higher protection rates — up to 16 DIN inclusive.

From a purely practical point of view, the higher this level of protection, the better; however, this characteristic significantly affects the price, and sometimes also the weight of the mask / goggles. So when choosing, it is worth considering the features of the planned work. For example, it is hardly worth specifically looking for a model for 15 – 16 DIN, if you have to cook rarely and little by little, but for professional use and large volumes of work, this level of protection will be very useful.

Turn-on time

The turn-on time of the filter in the chameleon mask (see "Type"), in other words, the time between striking the arc and darkening the filter to the operating level.

From a safety point of view, the turn-on time should be as short as possible: the faster the "chameleon" works, the less bright light from the arc enters the welder's eyes. On the other hand, reducing the reaction time affects the cost of the product. So for relatively small volumes of work, it is quite acceptable to use relatively “slow” masks — for 100 μs or more(especially since even in the simplest models, the reaction time does not exceed 1200 μs, while theoretically the maximum allowable value is 2000 μs). But for more serious use, you should pay attention to more "fast" options; nowadays, you can find masks with response times from 75 to 100 µs, from 50 to 75 µs, and even less than 50 µs.

Filter class

Class is a complex indicator that determines the overall quality of the light filter in a chameleon mask (see "Type"). The class is indicated by 4 numbers, each of which describes a specific optical parameter. So, the first number indicates the overall clarity and lack of distortion; the second is the degree of light scattering; third — uniformity of blackout (presence/absence of visible blackout spots); the fourth is the angular dependence (how much the filter brightens when the angle of view deviates from the perpendicular). In each case, the larger the number, the worse this parameter is. The perfect indicator is considered to be 1/1/1/1, but in fact it is very difficult to achieve an perfect angular dependence, and there is no need to. Therefore, an indicator of 1/1/1/2 is considered quite sufficient even for a high-end professional filter.

Filter viewing area (WxH)

The size of the transparent part of the light filter — the "working window", the area through which the welder sees the place of work. A larger working window provides ease of use and a wide field of view, but it significantly affects the cost of the mask and somewhat reduces the strength of the light filter.
Edon ED-9000 often compared
Forte MC-3500 often compared