Form 948 (10.09) ©2009 SOR Inc.
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Servicing
This transmitter contains no user serviceable parts and cannot be repaired on site. It must
be returned to the factory. Disassembly of the instrument by unauthorized persons will
invalidate the warranty. If there is a risk of debris accumulating in the pressure port, it
should be very carefully cleaned.
Use of a sharp object such as a screwdriver or a high-pressure spray to clean
the ceramic sensor could cause permanent damage!
Fault Conditions
If a malfunction occurs which is traced to the transmit ter, it should be removed for
inspection and test. If the transmitter has been subjected to excess pressure, vibra tion,
shock or extreme supply voltage (as in the case of a lightning strike), damage may be
indicated by a constant output, regardless of the applied pressure. Overpressure may
also cause high or unstable readings.
Blocked pressure ports or pipes may cause a similar symptom and should be rectified
before carrying out fur ther tests. Caution should be used in cleaning the process
connection to prevent permanent damage to the ceramic sensor.
The transmitter can withstand pressure of 150% of its rated range without calibration
change. Pressures above this may cause irreparable damage to the sensor. Frequent
causes of such overpressures are high transient pressures, which may not be easy to
detect during nor mal operation.
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