User's Guide _______________________________________________________________________
66 ___________________________________________________________________ M211060EN-H
Changing the HUMICAP® 180R/180V
Sensor (HMP110 and HMP113)
NOTE
Replacing the humidity sensor of the HMP110 and HMP113 is not
necessary in normal operation. If the accuracy of the probe does not
seem to be within specification, it is likely that the accuracy can be
restored by performing the adjustment procedure. See section Two-Point
Adjustment of RH Measurement (HMP110 and HMP113) on page 60.
Follow this procedure to replace the humidity sensor of the HMP110 and
HMP113 in case it has been damaged, or normal adjustment is not
sufficient to restore the measurement accuracy. Calibration and
adjustment of the humidity measurement is required after the sensor
change.
To perform this procedure, you need a new HUMICAP
®
180R/180V
sensor. It is also recommended that you replace the filter with a new one.
For order codes, see section Options and Accessories on page 74.
1.
Remove the filter from the probe by turning it counter-clockwise.
2.
There are two sensors under the filter, the HUMICAP
®
sensor and
a temperature sensor. Identify the HUMICAP
®
sensor – do not
touch the temperature sensor.
1210-035
Figure 28
HUMICAP
®
180R Sensor
3.
Pull out the old HUMICAP
®
sensor and insert a new one. Refer to
Figure 27 on page 65. Handle the new sensor by the plastic frame.
DO NOT TOUCH THE SENSOR PLATE.
4.
Perform a two-point adjustment of the RH measurement as
instructed in section Two-Point Adjustment of RH Measurement
(HMP110 and HMP113) on page 60.
5.
Attach a new filter on the probe.
