Two-Point Calibration - ABB ZDT–FG Series Installation And Operating Manual

...7 PROGRAMMING

7.2 Two-point Calibration

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OXYGEN CAL. SEQ.
0. 0
Cell Constant mV
100. 0
Span % of Theory
0000. 0
Cal. User Code
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One Point Cal.
Two Point Cal.
Preset Cal.
20. 9 5
Connect to Air
20. 9 5
Calibrating Air
1. 0 0
Enter Span Gas
1. 0 0
Connect Span Gas
16
Oxygen Calibration Sequence
Cell Constant mV
The upper display shows the millivolt offset of the oxygen probe from the last
successful calibration.
Span % of Theory
A value between 90 and 110% should be displayed. The display indicates the
oxygen probe output slope using parameters derived at the last successful two-
point calibration or using the preset values.
Calibration User Code
[00000 to 19999]
If an incorrect value is entered, access to the calibration page is inhibited and
the display returns to the top of the oxygen calibration page.
Two Point Calibration
Select the two-point calibration sequence.
Connect to Air
Connect the air supply to the probe (refer to the probe operating instructions,
IM/ZFG2 ).
The upper display indicates the test gas value in % oxygen.
Calibrating Air
The upper display indicates measured % oxygen. The display advances
automatically to the next frame when a stable reading is detected. To abort
calibration, press either the
Enter Span Gas
[between 0.10 and 10.00% Oxygen]
Set the oxygen content of the gas used to calibrate the span.
Connect Span Gas
Connect the span gas to the probe (refer to installation and operating
instructions supplied with the probe). The upper display indicates the test gas
value in % oxygen.
Continued on next page
or switch to advance to the next frame.