Process Errors Without Messages - Endress+Hauser Proline Prosonic Flow 93C Operating Instructions Manual

Troubleshooting
Symptoms
!
Note!
For troubleshooting, it may be necessary to modify or adapt settings in certain functions of the function matrix.
The functions outlined below are described in detail in the "Description of Device Functions" manual.
Unstable measured value display
despite continuous flow.
Measured value reading shown on
display, even though the fluid is at a
standstill and the measuring tube is full.
The fault cannot be rectified or some
other fault not described above has
occurred.
In instances of this nature, contact your
E+H service organization.
70
9.3

Process errors without messages

Rectification
1. Check the fluid for presence of gas bubbles.
2. Increase the following values:
– Analog Input function block → RISING TIME
– BASIC FUNCTIONS → SYSTEM PARAMETER → CONFIGURATION → FLOW DAMPING
3. Increase the value for display damping:
HOME → USER INTERFACE → CONTROL → BASIC CONFIG. → DISPLAY DAMPING
1. Check the fluid for presence of gas bubbles.
2. Enter a value for the low flow cutoff or increase this value:
BASIC FUNCTION → PROCESS PARAMETER → CONFIGURATION → ON-VALUE LF CUTOFF
The following options are available for tackling problems of this nature:
Request the services of an E+H service technician
If you contact our service organization to have a service technician sent out, please be ready with the following
information:
• Brief description of the fault
• Nameplate specifications: order code and serial number → ä 7
Return devices to E+H
You can return a measuring device to Endress+Hauser for repair or calibration.
Always enclose the duly completed "Declaration of Contamination" form with the flowmeter.
You will find a preprinted blank of this form at the back of this manual.
Replace transmitter electronics
Components in the measuring electronics defective→ Order spare part → ä 71
Proline Prosonic Flow 93C FOUNDATION Fieldbus
Endress+Hauser