Vaisala HM44 - Manual (Page 9)

Chapter 4 _____________________________________________________________ Taken into use
VAISALA __________________________________________________________________________ 7
CHAPTER 4
TAKEN INTO USE
Before taking into use the HM44 do the following:
- place the batteries into HMI indicator
- connect the probe
- feed the individual probe adjustment coefficients
- if needed, check and change the settings
The basic display appears when turning the device on:
RH
T °C
%
Feeding the individual adjustment coefficients
Each probe has an individual adjustment coefficients which are written in the calibration
certificate (see Appendix 1). These coefficients should be fed to the HMI41 memory to reach
the measurement accuracy of
±2 %RH.
- When using one probe, numbering of the probe is not needed.
- When using more than one probe, firstly select a number for the probe and then feed the
probe individual coefficients to the HMI41 memory. Remember to write the probe number
(1-10) in the product label to be able to identify the probes afterwards.
Relative
humidity
Temperature
Currently selected probe