Troubleshooting/Faqs; Diagnosing With Pdm; Troubleshooting Sensor-Related Problems - Siemens SITRANS F Operating Instructions Manual

Troubleshooting/FAQs

11.1

Diagnosing with PDM

SIMATIC PDM is a suitable tool for diagnosing the device.
You can use SIMATIC PDM to read all available parameters to a table for analyzing offline,
view online/actual process values and online/actual diagnostic information.
Requirements
The following procedure must be completed before diagnosing:
● Installation of PDM and PDM device driver
● Connection of HART interface.
Refer to "Commissioning with PDM" (Page 73).
Diagnosing with PDM
Online process values are available under menu "View->process values".
Online diagnostic information is available under menu "View->Device Status"
11.2

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
● Air bubbles in the liquid
● Vibrations/Cross talk
● Solid particles in the liquid
In the following a 4-steps guide to troubleshooting is provided:
Step 1
Step 2
Step 3
Step 4
The guide will enable you to trace the reason for incorrect measurements and to improve the
application.
SITRANS FC430 with HART
Operating Instructions, 03/2012, A5E03361511-01
Preliminary application inspection
Zero point adjustment
Measurement error calculation
Application improvement
11
157