Comparison Machtz MWH-4/306 PRO vs Machtz MWH-4/309 PRO

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	Machtz MWH-4/306 PRO	Machtz MWH-4/309 PRO
	from 1 250 ₴ Compare prices 3	from 1 590 ₴ Compare prices 3
all specs only differences
TOP sellers	Motoblok.biz 1 250 ₴ Buy in shop Rozetka.ua 1 250 ₴ Buy in shop Rozetka.ua 1 250 ₴ Buy in shop	Motoblok.biz 1 590 ₴ Buy in shop Rozetka.ua 1 590 ₴ Buy in shop Rozetka.ua 1 590 ₴ Buy in shop
	Filter operation test, low battery indication	Filter operation test, low battery indication
Type	chameleon helmet	chameleon helmet
Specs
Light filtering levels	4 DIN	4 DIN
Min. degree of darkening	9 DIN	9 DIN
Max. degree of darkening	13 DIN	13 DIN
Turn-on time	33.3 ms	33.3 ms
Filter class	1/1/1/2	1/1/1/2
Filter viewing area (WxH)	100x59.5 mm	100x93 mm
Filter cartridge dimensions (WxH)	114x133 mm	114x133 mm
Filter cartridge thickness	10 mm	10 mm
Optical sensors	4	4
Additional power supply	2xCR2450
Operating temperature	-5 – 55 °C	-5 – 55 °C
Helmet weight	500 g	500 g
Filter functions
Darkening adjustment	external mechanical	external mechanical
Sensitivity adjustment	internal mechanical	external mechanical
Delay time adjustment	external mechanical	external mechanical
Grinding mode	external mechanical activation	external mechanical activation
Colour rendering	standard (shades of green)	standard (shades of green)
Design features	internal and external controls	controls outside
Color
Added to E-Catalog	march 2022	march 2022

Brief conclusions of the comparison welding helmets

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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.

Sensitivity adjustment

The ability to change the sensitivity of the sensors responsible for the operation of the light filter in the "chameleon". Thanks to this function, you can adjust the filter in such a way that it is guaranteed to turn on from the arc and at the same time does not react to extraneous light sources. sensitivity adjustment is especially useful when there is numerous extraneous "flare" (for example, when several welders work close to each other, in bright sunlight, etc.).

Design features

— Backlight. Illumination system built right into the mask. This feature is very convenient when working in low light conditions: the backlight does not take up the hands (unlike hand-held flashlights) and does not create problems with wearing a mask (unlike headlamps), while the beam of light is always directed to where the welder's head is turned. On the other hand, such a system requires its own power supply. Therefore, it is used only in "chameleons", while the operation of the backlight additionally consumes battery power.