Replacing The Humicap® Rh Sensor; Removing And Fastening The Probe; Fixed Probe Model - Vaisala HMT140 User Manual

Replacing the HUMICAP® RH Sensor
Replacing the HUMICAP® RH Sensor
To ensure maximum operating life and a fast sensor response
time, replace a dirty filter.
Note:
When replacing a dirty filter, the HMP110D requires re-
calibration. Refer to the HMP60 and HMP110D Series
User's Guide for complete instructions.

Removing and Fastening the Probe

Fixed Probe Model

To remove and replace a fixed probe:
Loosen the metal locking bushing by carefully turning it
1
counter clockwise.
Remove the probe from the HMT140 by pulling it gently
2
outwards.
Attach the new probe to the 4-pin M8 panel connector on
3
the HMT140 (only one position possible).
Tighten the locking bushing to the M8 panel connector
4
by turning it clockwise.
2 2
3 3
1 1
Figure 16: Fixed Probe Model
46
Do not attempt to clean the filter.
VAISALA