Heath-consultants GT Series Bedienungsanleitung PDF herunterladen (Seite 118)

11-14

USER HANDBOOK

The instrument can however still be used to detect and

alarm on the other sensor(s) fitted.

The faulty sensor will cause the instrument to display a

flashing spanner symbol to warn the user that this sensor

is not working correctly, as shown in Fig. 11.8:

alternating with

Fig. 11.8 Zero Fault

11.6.3 Sensor Fault

There are two types of sensor fault as illustrated in the

following displays:

1) If a ZERO FAULT flag and a flashing spanner

symbol appear, alternating with a zero reading as

shown in Fig. 11.9, apply relevant test gas (LEL in

example) for two minutes and allow the display to

return to zero, then switch instrument Off and On

again.

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Heath-consultants GT Series Bedienungsanleitung Seite 118