ABB 4600 Series, Руководство по эксплуатации

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15
7.2 Two-point Calibration
7 PROGRAMMING…
Preset Cal.
Connect to Air
20.95
Calibrating Air
One Point Cal.
-----
Two Point Cal.
20.95
0000.0
Cal. User Code
-----
OXYGEN CAL. SEQ,
0.0
Cell Constant mV
100.0
Span % of Theory
1.00
Enter Span Gas
1.00
Connect Span Gas
1.00
Calibrating Span
Incorrect Calibration User Code
Oxygen Calibration Sequence
Cell Zero 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 the preset values.
Calibration User Code
[00000 to 19999]
If an incorrect value is entered, access to the calibration sequence is inhibited
and the display returns to the beginning of the
Oxygen Calibration Sequence
.
Two Point Calibration
Select the two-point calibration sequence.
Connect to Air
Connect the air supply to the probe (refer to the probe's Operating Instructions,
IM/ZGP2). 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
or switch to advance to the next frame.
Enter Span Gas
[between 0.10 and 10.00% O
2
]
Set the oxygen content of the gas used to calibrate the span.
Connect Span Gas
Connect the span gas to the probe (refer to the probe's Operating Instructions,
IM/ZGP2). The upper display indicates the test gas value in % oxygen.
Calibrating Span
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
or switch to advance to the next frame.
Continued on next page.