Sensor Fault (After Warm-Up); Sample / Flow Fault - Teledyne GT Series User Manual

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5.5.3 Sensor Fault (After Warm-up)

There are two types of sensor faults:

1. 'ZERO FAULT' and a spanner (wrench) symbol alternating with a zero reading, as illustrated in

Figure 50: Zero

Fault.

• Apply relevant test gas for two minutes and then remove it.

• Allow the display to return to zero.

• Switch monitor OFF and ON again.

• If the fault persists, return the monitor for service.

2. 'ZERO FAULT' and a spanner (wrench) symbol, alternating with a gas reading, as illustrated in

Figure 49: Zero Fault

• Leave monitor ON for 30 to 60 minutes.

• Switch it OFF and ON.

• If the fault persists, return the monitor for service.

If a sample fault occurs, 'FLOW FAULT' alternates with the mode name, as shown in

Flow Fault

(CSM).

• Pump switches off (except Confined Space mode)

• Pump symbol disappears

• Fault LED tuns ON.

Check sample line, filter or probe for blockage. Clear blockage then restart the pump by pressing

the FLOW ACK

button.

67112

Revision 10

Figure 50: Zero Fault

(LEL).

Figure 51: Flow Fault (CSM)

GT SERIES

1 INSTRUMENT, 7 APPLICATIONS

Figure 51:

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