Troubleshooting; Improving The Application; Sensor Check - Siemens SITRANS F Operating Instructions Manual

Troubleshooting

7.1

Improving the application

The first step in the troubleshooting procedure is to check for some easily resolved problems.
Check that:
● Sensor and SENSORPROM unit correspond (serial numbers)
● The sensor is properly installed.
● The sensor is located in a vibration-free position. Vibrations can disturb the sensor and
therefore cause measurement error.
● The sensor is filled with liquid and liquid only. Air or gas bubbles in the liquid cause instability
and can result in measurement errors.
Note
The liquid must be homogeneous in order to achieve high-accuracy measurements. If the
liquid contains solid particles of greater density than the liquid, then these solids can
precipitate, especially at low flow rates, which will cause instability in the sensor and lead
to measurement errors.
Resolving problems
1. Make sure that the serial numbers on the sensor and the SENSORPROM
2. Make sure that the sensor is installed as described in the installation chapter (Page 19) of
the sensor Operating Instructions.
3. Flush the pipe systems and the sensor for several minutes at maximum flow rate to remove
any air bubbles which may be present.
7.2

Sensor check

Requirement
To check the SITRANS F M sensors the following test instruments will be required:
● Digital Meter/Multimeter
● Megger
● (Moving Coil Meter)
Sensor check
Remove the transmitter from the sensor or remote position before making the following checks.
SITRANS MAG 1100/1100 F
Operating Instructions, 08/2018, A5E03433301-AD
7
unit are identical.
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