10
Turning Standby Mode on and off
To activate Standby Mode with the monitor on, press
the power
button once
. This will stop operation of the monitor; however the
sensor will be kept warm. This mode is used to conserve power
between operations but keep the sensor ready to measure the
gas concentration with only a short warm up phase as described
in “Warm up” in section 3.2. In this mode the display will be as
shown below:
To return the monitor to operational mode
press the power but-
ton once
.
NOTE: When using a Carbon Dioxide sensor head in
standby mode, the sensor runs at full power and the fan
remains on.
4.2 Operating under Battery power
A battery indicator will appear at the bottom of the display when
the monitor is operating under battery power only. The indicator
shows the battery life remaining.
4.3 Sensor Head Failure
There are two possible Sensor failure modes, which will be
indicated by one of the following messages on the display: -
“Sensor Failure, Replace sensor”
– The sensor head should
be replaced as this indicates that there has been component
failure.
“Sensor aging”
:
-
This indicates that the sensor has reached
the end of its usable life and the sensor head should be replaced
as soon as possible. The measurement readings can no longer
be relied upon to be within specification.
O3 LOW
0.080
ppm
NH3
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