HygroPro User’s Manual Page 37
Chapter 3: Service & Maintenance
3.3.1 Preparing to Clean the Probe (cont.)
To clean the moisture probe, the following items are required:
• Two glass (NOT metal) containers with approximately 300 ml of
reagent-grade hexane or toluene in each container.
• One glass (NOT metal) container with approximately 300 ml of
distilled (
NOT deionized) water.
IMPORTANT: Make sure the containers are deep enough to completely
submerge the moisture probe. Do not place the
transmitter module into the solvents. Insert only the
moisture sensor into the solvents.
• Rubber or latex gloves
• An oven set at 50°C ± 2°C (122°F ± 3.6°F)
• 1-1/8” wrench
3.3.2 Replacing the RTE
To maximize HygroPro performance, GE recommends recalibration
of the aluminum oxide moisture sensor on the Replaceable
Transducer Element (
RTE) every 6 to 12 months. The optimum
interval depends on the specific application. To accomplish this,
either return the RTE to GE for recalibration or install a new RTE.
The HygroPro electronics will automatically read and store the
calibration data whenever a new or recalibrated RTE is installed.
IMPORTANT: The programmed probe calibration data should not be
changed without consulting GE.
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