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ing. As a simple rule for optimum performance, it is recommended to set sensitivity to the
maximum at the beginning and then gradually reduce it, until the filter reacts only to the
welding light flashes and without annoying spurious triggering due to ambient light condi-
tions (direct sun, intensive artificial light, neighboring welder's arcs etc.).
Opening time delay adjustment: The opening time delay can be adjusted from 0.2 to 0.8
seconds. It is recommended to use a shorter delay with spot welding applications and a
longer delay with applications using higher currents and longer welding intervals. Longer
delay can also be used for low current TIG welding in order to prevent the filter opening
when the light path to the sensors is temporarily obstructed by a hand, torch, etc.
RECOMMENDED SHADE LEVELS FOR VARIOUS WELDING APPLICATIONS
/ EN 379 /
WELDING
PROCESS
MMA
MAG
TIG
MIG heavy met-
als
MIG light metals
Stainless, AI
Plasma cutting
Micro plasma
welding
LIGHT TRANSMISSION CURVE
100
T[%]
10
1
0,1
0,01
0,001
0,0001
300
DESCRIPTION OF JACKSON SAFETY
1. Solar cells
2. Photo-sensors (Photo diodes)
3. Filter housing
4. Liquid crystal shutter viewing area
5. Shade adjustment
6. Sensitivity adjustment
7. Opening time delay adjustment
6
6
10
15
30
40
8
8
8
9
9
9
4
5
6
7
400
500
600
CURRENT IN AMPERES
60
70
100
125
150
9
10
WF20 ASPIRE
9
10
WF20 ASPIRE
10
11
WF20 ASPIRE
ES, WF20 ASPIRE
®
10
WF20 ASPIRE
ES, WF20 ASPIRE
®
10
WF20 ASPIRE
ES, WF20 ASPIRE
®
10
11
WF20 ASPIRE
ES, WF20 ASPIRE
®
8
9
10
WF20 ASPIRE
Shade 4
Shade 9
Shade 10
Shade 11
Shade 12
Shade 13
700
800
900
1000
Wavelength
FILTER FEATURES
®
175
200
225
250
300
11
12
ES, WF20 ASPIRE
DS
®
®
11
12
ES, WF20 ASPIRE
DS
®
®
12
13
DS
®
11
12
DS
®
11
12
DS
®
12
13
DS
®
11
12
ES, WF20 ASPIRE
DS
®
®
LIGHT STATE
DARK STATE
1100
1200
1300
λ[nm]
Figure
350
400
13
14
13
13
13
1400
E
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