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Installing the AC/DC adaptor
• Connect the AC/DC adaptor to the mains supply. Ensure that
the adaptor is correctly rated for the power supply.
• Plug the adaptor into the monitor. The monitor can now be
used as a mains unit. If the monitor is to be used as a port-
able unit the batteries will need to be charged.
3.2 Sensor warm up
Prior to operation the monitor must be warmed up to burn off
contaminants on the sensor. When the monitor is first switched
on it will warm up for 3 minutes. Then the reading will flash for
the next 7 minutes to indicate that the sensor is still in the warm
up phase. It is recommended that the monitor is kept in Stand By
mode when not being used to keep the sensor heated and
prevent the build up of contaminants. If the sensor is new (or
unused for long periods) it can take up to 24 hours for the
message "sensor warming up" (or "sensor failure" in older
models) to disappear. Should the message remain after this time,
a genuine sensor failure may have occurred. See the trouble-
shooting guide.
Since O3 is an oxidising gas the warm up period can be reduced
by subjecting the sensor to elevated O3 levels for a short period.
For example, 100 ppb of O3 for 5 minutes typically reduces the
warm up time to 30 minutes.
24hrs is a conservative time for an ozone sensor to burn off con-
taminants and achieve its stated performance specification. In
most instances this will be achieved well within 24hrs.
Warning: Do not remove the sensor head while the monitor
is switched on. This may damage the unit. If the sensor head is
removed under these conditions, the unit will automatically shut
down.
3.3 Monitor and Sensor Versions
Turning the monitor on will display "AEROQUAL MONITOR
V x.x", where "V x.x" represents the version of the monitor
base. The display will then show "
ware version installed on the sensor head.
netzerotools.com
SVXX
netzerotools.com
" which indicates the soft-
8
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