Table of Contents
Advertisement
2.2.
Sensor Heads
Inlet (meshed)
Note: Always place the sensor head perpendicular to the air flow to avoid damage to the
sensor.
2.2.1. Sensor Warm Up
Prior to operation the sensor must be warmed up to burn off any contaminants. When the monitor is
first switched on it will warm up for 3 minutes. The reading will then 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.
For Ozone Sensor Heads:
•
24hours is a conservative time for an ozone sensor to burn off contaminants and achieve its
stated performance specification. In most instances this will be achieved well within 24hrs.
•
The warm up period can be reduced by subjecting the sensor to elevated ozone levels for a
short period. For example, 0.1 ppm of ozone for 5 minutes typically reduces the warm up time
to <30 minutes.
Note: 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 without AC/DC adapter connected,
the unit will automatically shut down.
2.2.2. Sensor Head Failure
There are three 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.
Note: This message will only apply for O3 Low/Ultra Low sensor heads.
"S.F." – When there is more than one sensor connected, S.F. will show for a sensor failure condition.
Kanomax Gasmaster User Guide
MRK-D-0002 V3
Outlet
Keyed connector to ensure
inserted correctly into base
Page | 7
Advertisement
Table of Contents
