1
4
2
3
Figure 25 Filter Structure
1
Sealing ring (replace if damaged)
2
Vaisala HUMICAP® 180R sensor and Pt1000 temperature sensor
3
Spring washer
4
Tube filter
Replace the filter as follows:
1. Turn the filter counterclockwise until it is loose.
2. Pull the filter straight out carefully; do not damage the sensors, and do not lose the
spring washer.
3. Take the new filter, and insert it to the filter threads. The spring washer should be under
the filter. A new washer is not included with the filter, so reuse the old one.
4. Tighten the new filter by turning it clockwise. Do not use tools to tighten the filter,
finger tightness is enough.
5.3 Changing Sensor
The user can replace the HUMICAP
â
180R sensor with a new one. The new sensor must be
of the HUMICAP
â
180R type. Do not attempt to use a different sensor type.
Replacing the sensor is repair maintenance, and it is not necessary in normal operation. If
the accuracy of the transmitter does not seem to be within specification, it is more likely
that the transmitter is in need of calibration and adjustment, and not sensor replacement.
See
Calibration and Adjustment (page 47)
.
1. Remove the filter as instructed in
Changing Filter (page 45)
.
2. Remove the damaged sensor and insert a new one. Avoid touching the Pt1000 sensor.
Handle the new sensor by the plastic socket. DO NOT TOUCH THE SENSOR PLATE.
3. Attach a new filter on the probe as instructed in
Changing Filter (page 45)
.
DMT132 User Guide
M211289EN-B
46
Summary of Contents for HUMICAP DMT132
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Page 64: ...DMT132 User Guide M211289EN B 62...
Page 70: ...DMT132 User Guide M211289EN B 68...
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