Siemens SITRANS F FUT1010 Instructions De Service page 42

Troubleshooting
5.1 Troubleshooting
Error or Message
- - -F- - - Fault Alarm
Re-space Index
Invalid Setup
40
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 pipe parameters, or some
other factor that prevents it from
completing the Initial Makeup.
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). Review all site setup and
sensor installation choices
particularly data entered for pipe
and gas.
In Reflect Mode the flow meter

detects that the pipe wall signal
may impinge upon the gas signal.
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.
FUT1010 IP65 NEMA 4X & IP66 NEMA 7 Gas Quick Start
Operating Instructions, 1/2013, A5E02639183-AC
Solution