Siemens SITRANS F TRANSMAG 2, Operating Instructions Manual, Page: 80 / 126

10.2 Application Problems
Table 10-1 Troubleshooting list
Error Diagnosis Remedy
Sensor does not work or no
display or no output signal Power supply missing Connect or switch on power supply
Device fuse defective Check device fuse and replace if necessary
Transmitter does not react to
controls Reflections in the glass Clean glass
Glass is not tight to the operating unit Screw in the electronic cover tightly
Transmitter cannot be para‐
meterized by the operating
module Personal code is activated Enter personal code (menu 6.1 or deactivate by
entering 0 in menu 6.2)
Local operation lock activated by HART or
PROFIBUS Cancel operation lock
Output signal OK but no dis‐
play visible Ambient temperature outside permissible
range Remote design: bring transmitter into a tempera‐
ture range of 0 to 50 °C
Display defective Change operating module
Flow display = 0 at available
flow Low flow cut-off set too high Reduce low flow cut (menu 3.1.6)
Flow opposite to preferable direction at set‐
ting of measuring direction to "forwards
only" Switch over preferred direction menu (3.1.5.1) or
set measuring direction to "forw.+rev." (menu
3.1.5.2)
Measured value set to 0 via digital input Switch over signal at digital input (menu 4.3.2) or
switch off function (menu 3.3.1)
Cable connection to sensor defective (only
for remote design) Check cable connection and exchange as required
SmartPLUG defective Have SmartPLUG exchanged (only by service per‐
sonnel)
Transmitter indicates flow at
zero flow Hydraulic zero point drift, application-de‐
pendent Perform zero correction (menu 6.6.2) or enter
correction value directly (menu 6.6.1)
Grounding problems Provide potential equalization (see Installation
with grounding rings (Page 28))
Fluctuating measuring re‐
sults at constant flow Air, gas occlusions Eliminate gas occlusions or use gas trap
Grounding problems Provide potential equalization (see Installation
with grounding rings (Page 28))
Vibrations in the sensor and/or in the cable
run Fix the sensor better, strap cables
Medium conductivity too low Check conductivity; measuring method may be
unsuitable
Proportion of solids too high Reduce proportion of solids, measuring method
may be unsuitable
Very unstable measurement, strongly fluc‐
tuating values, output going towards zero Check for moisture in SmartPlug
If fitted with round SmartPlug call factory product
support
Troubleshooting
10.2 Application Problems
TRANSMAG 2 with MAG 911/E
80
Operating Instructions, 03/2021, A5E00102775-AC