Installation_________________________________________________________________________
Vaisala _________________________________________________________________________ 12
Temperature differences
If there is a difference between the process and ambient temperatures,
it is recommended to mount the sensor head and at least one meter of
cable inside the process. This is to avoid incorrect relative humidity
readings due to temperature difference. If this installation is not
possible and the sensor head must be installed through the wall (e.g.
with a flange), the sensor head and the cable must be insulated
carefully.
Checking the temperature reading
The actual temperature of the process can be measured with a
reference instrument to be compared with the transmitter reading. The
heat transfer is less evident if you remove the protective filter of the
sensor for a short-term test. However, never use the sensor long
periods without the filter as this may cause a faster contamination of
the sensor. The transmitter fulfils the specified EMC regulations with
the protective filter on the sensor head.
To Next Page
Loading...
