AMC AMC-1225 Manuale di istruzioni - Pagina 17

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AMC-1225 SENSOR MODULES

6 MAINTENANCE

This section covers topics related to the maintenance of the AMC-1225 unit. A general

description of maintenance to be carried out is followed by a verification of operation and then

details about the sensor replacement.

The sensor unit should be brushed or wiped clean once a year or more of any dust or dirt which

settles on it depending on the accumulation.

The unit should NOT be submerged or placed under conditions where water or other liquids

would be able to enter the transmitter.

Verification of operation should be performed at least once every 6 months. For highly

demanding applications more frequent verification is recommended.

Sensor life is typically in excess of 10 years. The sensor should be replaced when the green

LED turns OFF while the unit is powered.

CAUTION:

Turn off the power supply before attempting the following.

When the sensor needs replacing, reorder the Part Number listed in Product Information (page

4). To replace the sensor element remove the four screws and cover plate from the housing.

Unplug the used sensor element from its socket and discard. Then plug in the replacement

Figure 3-1

sensor element, refer to

for sensor polarity. Reinstall the cover plate and screws.

NOTE:

Allow 24 hours for the new sensor element to stabilize (burn-in) before recalibration, then

follow instructions in the Calibration section of this manual.