MSA 9010 SIL, Руководство по эксплуатации

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Calibration
GB
Model 9010/9020 SIL
6 Calibration
WARNING!
During calibration, the detectors being calibrated are set to inhibit and the control unit does not
ensure the safe operation of the site. During this phase, the alarms are inhibited, and the
4/20 mA analog output is as set in Access Code 4, P20; the failure indication for the ATEX mode
is active.
WARNING!
A control unit configured for receiving 4/20 mA input signals from 2-wire or 3-wire transmitters
does not need any calibration. Check the Calibration Data Sheet to identify the detector/trans-
mitter connected to the Control Unit.
The procedure for passive detector calibration is carried out using Access Code 1 and consists of
4 steps:
P1: Zero calibration
P2: Set calibration gas concentration
P3: Span calibration
P4: Display the actual gas concentration
The heating time before calibration must be at least 30 min for the catalytic detectors and 60 min
for the electrochemical detectors.
6.1 9010 / 9020 SIL Module Calibration (for Passive Detectors Only)
Two persons are required to perform calibrations:
Person 1 operating the unit and Person 2 supplying the detectors with gas.
It is necessary for them to communicate during the calibration.
During the calibration operations when span calibration is confirmed, error messages
may be displayed depending on detector signal conditions. For the meaning of error
messages refer to chapter 8.2.