Fluke Datapaq Food Tracker User Manual page 58

The humidity sensor connection cable, in Sensor electronics in position in the
two sections. thermal barrier's humidity-probe
retainer.
The barriers are provided with an external mounting bracket for positioning the
sensor, screwed to the barrier-lid splash guard (see photograph p. 55).
When fitting the sensor, ensure that all cables are carefully located through the
barrier's probe-exit slot so that they are not trapped under the barrier lid.
Conditioning the Humidity Sensor
If the humidity sensor is moved quickly into a hot, moist oven environment, it is
possible for condensation to form on the sensor, resulting in the sensor
incorrectly recording 100%RH.
Datapaq's humidity sensor conditioner solves this problem by heating up the
sensor prior to insertion in the oven. This reduces the difference between
sensor temperature and oven temperature, thus minimizing condensation.
Before using the humidity sensor conditioner, refer to the user documentation
supplied with the unit.
To ensure minimum time for the humidity sensor to cool before it enters the
oven, it should be heated in the conditioner immediately before the start of the
profile run. The sensor should thus be placed in the conditioner's heating
chamber with the logger fully assembled in the thermal barrier and the sensor in
place in the barrier's mounting bracket. After conditioning, the whole assembly
can then simply be picked up and placed on the conveyor or product shelf.
58
Humidity Measurements
FOOD TR ACK ER