Table of Contents
Advertisement
Figure 3-2.
SPAN ADJUST - for
calibration only.
20% hydrogen in air is explosive. Vent the gas from the outlet outdoors,
if possible. Always make sure that the workplace is well-ventilated.
6. SPAN ADJUST
Do not perform this adjustment except during a calibration.
Make sure that Knob 1 is in the TEST position.
Using a screwdriver, adjust the SPAN ADJUST (Figure 3-2) so that the
digital display reads a concentration identical to the calibration test
gas value.
Turning the screw clockwise will increase the display value in %H
Turning the screw counter-clockwise will decrease the display value in
NOTE
%H
.
2
7. Repeat until the Zero and Span readings remain constant and un-
changed and the calibration reading is within the repeatability specifi-
cation (±0.5% H
).
2
8. The analyzer is now calibrated.
Displays
Sensor Current
(Backlight)
Electrical Zero
Adjustment Screw
CURRENT ADJUST
Current Adjustment
Knob
(FOR CALIBRATION ONLY)
Displays % H2
(No Backlight)
Displays % H2
1
(Backlight)
4
SPAN ADJUST
Operation
.
2
|
3-5
Advertisement
Table of Contents
