Electrical Calibration Page - ABB AK102 User Manual

10.4 Electrical Calibration Page

Note. Access to the programming pages is possible only with Range 1 selected.
ELECTRICAL CAL
Calibrate No
Yes
xxx.x
mV Zero (-250mV)
xxx.x
mV Span (10mV)
Adjust RTX Zero
Adjust RTX Span
30
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 instruments are fully calibrated before despatch and should not normally require
further calibration.
Select Calibration
Select the calibration requirement using the
Calibrate No
Calibrate Yes
Advance to next parameter
No
Calibration Range Zero (100% Purge Gas)
Connect a suitable millivolt source (see Section 8.3) and apply a signal input equivalent to
range zero (–250.00mV). Allow the instrument display to stabilize.
Advance to next parameter
Calibration Range Span (100% H
Apply a signal input equivalent to range span (+10.00mV). Allow the instrument display to
stabilize.
Advance to next parameter
Adjust Retransmission Zero
Adjust the retransmission zero (e.g. 4.00mA) to the appropriate zero value.
The retransmission zero signal is either 85% or 80% H
Outputs 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
(default) skips to Adjust RTX Zero frame.
enables zero and span electrical calibrations to be carried out.
in Air)
2
.
.
10 PROGRAMMING...
or keys.
in Air as selected in
2
in Air.
2
Set Up