Electrical Calibration Page (Lower Display) – Ak101 Only - ABB AK101 User Manual

10.2.4 Electrical Calibration Page (LOWER DISPLAY) – AK101 only
ELECTRICAL CAL
Calibrate No
Yes
Yes
xxx.x
mV Zero (0.00mV)
xxx.x
mV Span (10.00mV)
Adjust RTX Zero
Adjust RTX Span
*Note. Purge gas options include:
CO (Carbon dioxide)
2
N (Nitrogen)
2
Ar (Argon)
Notes.
1) The 4689 instruments incorporate a two-point calibration sequence requiring both zero and
span inputs for a calibration. It is not possible to adjust the range zero or the range span
scale points independently.
2) The instrument is fully calibrated before despatch and should not normally require further
calibration.
Calibration
Proceed as described in Section 8.3 Calibration, but apply a signal input equivalent to range
zero (0.0mV). Allow the instrument display to stabilize.
Advance to next parameter
No
Calibration Range Zero (0% H
Proceed as described in Section 8.3 Calibration, but apply a signal input equivalent to
%H2 IN PURGE GAS* range zero (0.00mV).
Allow the instrument to stabilize.
Advance to next parameter
Calibration Range Span (100% H
Apply a signal input equivalent to %H2 IN PURGE GAS* range span (10.00mV).
Allow the instrument display to stabilize.
Advance to next parameter
Adjust Retransmission Zero
Adjust the retransmission
The retransmission zero signal is either 85% or 80% H
.
Page
Allow the output signal to stabilize.
Advance to next parameter
Adjust Retransmission Span
Adjust the retransmission span (e.g. 20.00mA) to the appropriate maximum value.
The retransmission span signal corresponds to 100% H
Allow the output signal to stabilize.
Return to
Operating Page
in CO )
2 2
in CO )
2 2
zero (e.g. 4.00mA)
.
10 PROGRAMMING...
to the appropriate zero
in Air as selected in
Set Up Outputs
2
in Air.
2
value.
39