4-9
INSTALL INSTRUMENT IN STATION & PERFORM BUMP / CALIBRATION
The gas values, illustrated in Fig. 4-10, alternate with HIHI / HI
or LOLO / LO indication, as illustrated in Fig. 4-11.
Fig. 4-11 Instrument in Alarm Condition
The instrument’s audible alarms are activated for a short period
of time when each range reaches the instrument’s congured
alarm setpoint. These normally overlap.
The station pump continues to operate for approximately 30
seconds in order to induce air, via the ‘AIR’ inlet adaptor on
the rear of the station, and purge the station / instrument of
remaining gas.
During this process, a reduction in the gas values (increase
in oxygen) on the instrument display will be clearly visible.
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