Autocalibration Failure - MSA Sirius Manual De Operación

9. Close the valve on the regulator, if so equipped.
10.Repeat steps 5 through 8 for the PID.
NOTE: The Autocalibration procedure adjusts the span value for any
sensor that passes the test; sensors that fail autocalibration are
left unchanged. Since residual gas may be present, the instru-
ment may briefly go into an exposure alarm after the calibration
sequence is completed.

Autocalibration Failure

If the Sirius Multigas Detector cannot calibrate one or more sensor(s),
the instrument goes into the Autocalibration Failure Page and remains
in alarm until the RESET button is pushed. Sensors that could not be
calibrated are indicated by dashed lines on the concentration display.
• Check the calibration cylinder for:
• accuracy
• calibration setpoints
• Replace failed sensor or,
• if a VOC, clean the PID bulb and/or replace the ion chamber.
5-5