Troubleshooting Sensor-Related Problems - Siemens SITRANS FC330 Operating Instructions Manual

Diagnostics and troubleshooting
10.3 Operation troubleshooting
Note
Firmware update
FW update is to be done only by authorized and trained service personnel.
10.3.3

Troubleshooting sensor-related problems

Incorrect and unstable measurements, especially at low flows, are typically a result of an
unstable zero point due to:
● Incorrect installation
● Bubbles in the liquid
● Vibrations or cross talk
● Solid particles settling in the liquid
Follow the 4-step guide to troubleshooting:
Step 1
Step 2
Step 3
Step 4
The guide enables you to trace the reason for incorrect measurements and to improve the
application.
Step 1: Inspecting the application
Ensure that:
1. The sensor is installed as described in Installing/mounting (Page 37).
2. The sensor is located in a vibration-free position. Vibrations can disturb the sensor and
therefore cause measurement error.
190
Preliminary application inspection (Page 190)
Zero point adjustment (Page 190)
Measurement error calculation (Page 190)
Application improvement (Page 190)
Operating Instructions, 01/2019, A5E44030648-AB
SITRANS FC330