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1. GENERAL
The light valve(LCD) in this product can turn from light to dark at the moment of electricity arc
appearing,with the principle of photoelectric.The darkness degree can be adjusted between DIN 9
and 13.UV-IR filtering assembly consists of reflective coated glass,multi-layer light valve(LCD)and
polarizer. It can effectively block the ultraviolet radiation and infrared ray from get through ,then
effectively protect the eyes of the workers against the dama-ges of ultraviolet radiation and infrared
ray.Automatic darkening helmet has wider coverage than common helmet.It can be used to protect
the face and neck against the damages of the electricity arc and improve the product quality and
working efficiency.This product is widely used by many developed countries at present.
This product is widely used in shipbuilding,petroleum, Architecture,steel,boiler-manufacture and so
on .The working temperature range is -5 c~+55 c.The limited working temperature range is -10
c~+60 c.The limited storage temperature range is -20 c ~+70 c.The relative humidity range is
20%~80%.
2. WORKING PRINCIPLE
The helmet can converse the electricity arc resulted from welding to the electronic signals.And after
these signals are magnified,they will be passed to the LCD driven circuit,in which the light valve will
be turned from light to dark.So that can avoid the damages to the eyes of the workers.
The principle of the whole circuit is as follows:
3. OPERATION INSTRUCTION
1. Open the package and take out the helmet.Tear off the protective film of the viewing area.Then
exam whether every parts is good enough(the lithium battery is installed before delivery).
2. Adjust tightness of the comfort cushion through the manual knob in order to make the user com-
fortable after wearing it.
3. Adjusting the knobs on the sides of the helmet is to change tightness when lifting the helmet up
and down.Visual angle can be moved it ahead and backwards to fulfill the user`s need.
4. Adjustable sensitivity and delay time of the viewing area enable the user to adjust according to
different working condition.Reduce the sensitivity to avoid interference.When small current low arc
is used ,high sensitivity can be selected. But high sensitivity must be adopted in case of argon
arc.Delay time means the time from dark to light of the filter.The user can also select according to
working condition and individual habit. with different types of filters and different methods of adjust-
ment,present modes of adjustment are tumble switch, knob switch,touch-tone switch.
Welding filter
Arc light
Sensor
Magnify
Controlling
circuit
LCD driver
circuit
eye
circuit of power supply
5. According to strength degree of electricity arc,we can adjust the knobs to fulfill the user`s needs
to different shade.
6. When the filter doesn`t work or NO.of the light-shade is out of service,we should exchange the
battery.
4. MAIN TECHNICAL INDEX AND PARAMETER
5. SIZE OF THE HELMET
6. MAINTENANCE
Please pay attention to the daily maintenance in order to prolong the life.
1. Take out the battery when the product is not used for a long time.
2. Make no water enter into the product,or it will cause permanent damage.
3. Don`t expose the product under the sunshine.
4. Use balanced strength to adjust the electrograph.Please don`t rotor it hard.
7. STORAGE AND TRANSPORTATION
Please handle the product light during the transportation.The
storage temperature range is-20 c~+70 c.
