This procedure is 1 of the alternative methods for completing the adjustment described in Calibrating and adjusting HMT330 series and PTU300 series transmitters. |
The difference between the 2 reference humidities must be at least 50 %RH. |
The MI70 indicator is used now only as a terminal for visualizing and setting the transmitter's RH reading.
If you use Vaisala Humidity Calibrator HMK15, use the adapter fitting (13.5 mm) on the measurement hole if you calibrate probes of HMT334, HMT335, HMT337, or HMT338 transmitter models.
To complete the adjustment: