Siemens SITRANS F FUG1010 IP65 NEMA 4X Instructions De Service page 52

Troubleshooting
5.1 Troubleshooting
Error or Message
- - -F- - - Fault Alarm
Re-space Index
Invalid Setup (use Direct Mode)
50
Probable Cause
Loss of signal strength (ALC)
•
Change of Rx signal location (Beam
•
Blowing)
The measured gas sonic velocity (Vs)
is more than +/- 25% of the average Vs
range.
During the Initial Makeup the system
detects invalid sensor spacing,
erroneous gas and 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.
Assure proper pipe dimensions
•
and/or gas 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 gas.
In Reflect Mode the flow meter
•
detects that the pipe wall signal
may infringe upon the gas 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.
FUG1010 IP65 NEMA 4X Quick Start
Operating Instructions, 06/2014, A5E02951527-AC