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HygroPro User’s Manual Page 41
Chapter 3: Service & Maintenance
3.3.6 Installing the Probe in the Transmitter
To install a new or cleaned probe in the transmitter, complete the
following steps:
1. Reconnect the probe cable to the top of the probe by turning the
locknut.
2. Carefully push the probe into the transmitter.
3. Replace the metal plate without touching the sensor.
4. Tighten the four captive screws on the metal plate into the bottom
of the transmitter.
3.3.7 Evaluating the Cleaned Probe
Note:
All new probes are calibrated at the factory, and no evaluation
is required after installation.
1. Reconnect the probe cable to the transmitter module and measure
the ambient air dew point. Make sure to measure the same ambient
air as measured during removal of the transmitter.
2. Compare the two ambient air readings. If the new ambient air
reading is within ±2°C (±3.6°F) of the first reading, the cleaned
probe is properly calibrated and normal operation may be
resumed.
3. If the probe is still not reading the ambient air accurately, repeat
the cleaning procedure using soaking times that are five times
those used in the previous cleaning sequence. Repeat the cleaning
cycles until two consecutive ambient air readings are identical.
If the above cleaning procedure does not result in accurate readings,
contact GE for assistance.