Siemens SITRANS F series Betriebsanleitung Seite 53

Error or Message
- - -F- - - Fault Alarm
Re-space Index
Invalid Setup (use
Direct Mode)
FUS1010 IP65 NEMA 4X & IP66 NEMA 7 Quick Start
Operating Instructions, 07/2014, A5E03086486-AD
Probable Cause
Loss of signal strength (ALC)
•
Change of Rx signal location (Beam
•
Blowing)
The measured liquid sonic velocity (Vs) is
more than +/- 25% of the average Vs range.
During the Initial Makeup the system
detects invalid Sensor spacing, erroneous
liquid or pipe parameters, or some other
factor that prevents it from completing the
Initial Makeup.
Solution
Recouple sensors with fresh couplant.
•
Install sensors in Direct mount mode
•
Note: If problem persists call Tech support.
•
Ensure proper pipe dimensions and/or Liquid
•
data entries are correct.
Properly enter correct Sensor Size into the
•
meter [Install Sensor] menu.
Confirm sensor spacing is correct by checking
•
[Install Sensor] menu spacing parameters.
This may be due to one of the following:
An out-of-range data entry.
•
An invalid condition (e.g., overlapping Sensors
•
in Reflect Mode). If selecting Direct Mode does
not resolve, review all site setup and Sensor
installation choices; particularly data entered
for pipe and liquid.
In Reflect Mode the flow meter detects that the
•
pipe wall signal may impinge upon the liquid
signal. Use Direct Mode instead.
Press <ENTER>, <Up Arrow>, <Down Arrow>,
•
or <Left Arrow> to abort install routine.
Continue programming other site data in
anticipation of resolving the difficulty later. Call
technical support for help if necessary.
Troubleshooting
5.2 Troubleshooting
51