KROHNE OPTITEMP Compact sensors - Manual (Page 28)

5
OPERATION
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OPTITEMP TRA-CXX
www.krohne.com 02/2014 - 4003290501 - MA OPTITEMP TRA-Cxx R01 en
Operation
5.1 Start-up
5.2 Normal operation
5.3 Faults and damage: reason and remedies
In addition, the following faults and damage may occur:
Liquid on the process connection
A damaged or incorrect seal can lead to a leak at the process connection. Should this occur,
replace the seal and ensure that the new one meets the individual requirements of the
measuring point (pressure, temperature, chemically aggressive media). It is the sole
responsibility of the operator of the device to select the right seal.
CAUTION!
Double check the following things prior to starting up an industrial compact sensor in order to
avoid measuring errors as well as damage to or the destruction of the compact sensor:
• Ensure that the thermowells have been properly installed according to the manufacturer's
instructions.
• Ensure that the process connection has been successfully tested for leaks.
• Ensure that the measuring insert has been properly electrically connected according to the
manufacturer's instructions (refer to measuring insert handbook).
WARNING!
Never touch the thermowell, neck tube or connection in operation without protective gloves!
These components can become very hot during operation and cause burns.
INFORMATION!
The most probable cause of a fault is the sensor element itself and its electronic components.
The following issues come into question here:
• Short circuit or open circuit
• Insulation resistance too low
.book Page 28 Friday, February 7, 2014 9:17 AM