switch between the reading screens.
The humidity kit comprises of:
Humidity lead
Humidity sensor
Connection of the Humidity Sensor
Plug the humidity sensor onto the mating connector of the transmitter or connection cable. Make
sure that the catches are aligned correctly. Tighten the knurled nut by hand.
Note: The humidity sensor can take 30 minutes to stabilise and special handling is required for
optimum performance and stability. Please refer to the instruction leaflet included with the
humidity sensor packaging for the Humidity Standards.
Oxygen Reading (Optional)
The instrument has the optional facility to use an internal oxygen cell (specified at the time of
manufacture). This allows the instrument to read and display oxygen readings along with CO
2
.
Note: Oxygen sensor stability; as the sensor is a partial pressure sensor its output will be affected
by changes in relative humidity. Although the percentage of O2 in the air is relatively constant,
the relative humidity in air is variable. A unit calibrated with dry air could cause the readout to
read low by up to 0.5% by volume.