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typefaces (positive and negative). The adjustment of the knob »Range« defines the
range which is being used.
Adjustment of sensitivity: Most welding applications can be performed with welding
light sensitivity set to maximum. The maximum sensitivity level is appropriate for low
welding current work, TIG, or special applications. The welding light sensitivity has to be
reduced only in some specific surrounding lighting conditions in order to avoid unwanted
triggering. 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
conditions (direct sun, intensive artificial light, neighboring welder's arcs etc.).
Opening time delay adjustment: The opening time delay can be adjusted from 0.1 to
1.0 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.
Function welding/grinding: MigADCplus electro-optical welding filter can be used
for both welding and grinding applications. By selecting the position »Grind«, the filter
switches off and it will not be triggered by the sparks generated during grinding. Before
restarting welding work, the knob should be set back to the »Weld« position.
► RECOMMENDED SHADE LEVELS FOR VARIOUS WELDING APPLICATIONS
/ EN 379 /
WELDING
PROCES
MMA
MAG
TIG
MIG heavy
metals
MIG light metals
Stainless, Al
Plasma cutting
Micro plasma
► LIGHT TRANSMISSION CURVE
100
T[%]
10
1
0,1
0,01
0,001
0,0001
300
8
6
10
15
30
40
8
8
8
9
9
9
4
5
6
7
400
500
600
700
CURRENT IN AMPERES
60
70
100
125
150
9
10
MigADCplus ADF
9
10
MigADCplus ADF
10
11
MigADCplus ADF
10
MigADCplus ADF
10
MigADCplus ADF
10
11
MigADCplus ADF
8
9
10
MigADCplus ADF
Shade 3
Shade 4
Shade 6
Shade 7
Shade 8
Shade 9
Shade 10
Shade 11
Shade 12
Shade 13
800
900
1000
1100
Wavelength
175
200
225
250
300
11
12
11
12
12
13
11
12
11
12
12
13
11
12
LIGHT STATE
DARK STATE
1200
1300
1400
λ[nm]
350
400
13
14
13
13
13
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