Abort Calibration; Sensor Efficiency; Recovery Period - ABB Navigator 550 Operating Instructions Manual

Navigator 500
Hydrazine analyzer

5.2.3 Abort calibration

A calibration can be aborted by pressing the
while the Calibration page is displayed (see Section 5.1, page
23) – the calibration valve closes enabling the sample to flow
past the sensor. A calibration recovery period commences and
the Calibration Log (see page 31) displays the message
Cal Aborted – see Section 6.7.1, page 32 for Calibration Log
entries.

5.2.4 Sensor efficiency

At the end of the calibration, the Efficiency and Last Efficiency
values in the Signals View (see page 31) and Calibration Log
(see page 31) are updated if the calibration is successful. An
indication of efficiency is displayed as a 1 to 5-bar line:
>85 % Efficiency (green)
>70 % Efficiency (green)
>60 % Efficiency (green)
>50 % Efficiency (green)
>40 % Efficiency (green)
<40 % Efficiency (red)
Note. The Active Efficiency value is not updated if the
calibration fails. The Calibration Log is updated with the Cal
Efficiency value.
OI/AHM550–EN Rev. A

5.3 Recovery period

(Abort) key
The recovery period allows time for the wet-section to return to
the Process Value after a calibration. Current Outputs and
Alarms are still held during the recovery period if the Hold Output
option is enabled. The default value for the recovery period is 15
minutes but can be configured between 10 and 60 minutes.
To enable the Hold Outputs option:
1. Access the configuration level Calibrate menu (see
2. Select Enable at the Sensor 1 (4) (single-stream) or Sensor
The default value for the recovery period is 15 minutes but can
be configured between 10 and 60 minutes.
Calibration pass
Calibration fail
Section 4.3.1, page 20, steps 2 to 4).
Three Stream / Hold Outputs menu option.
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