OPERATING MANUAL HPC & UMC4
Page 97 of 105
17. UMC4 transmitter error messages
The integrated UMC4 transmitter distinguishes between two types of errors. Self-test errors such as prob-
lems with a sensor line or inconsistent parameter inputs are displayed as text error messages. Once the
error has been eliminated, the message automatically disappears from the display. For further infor-
mation, see Section 17.3.1 Display of self-test errors.
Errors that are attributable to system memory or software, division by zero, or a fault in the electronics
unit are designated as system errors. These error messages are not reset automatically after the error
(usually of very brief duration) is eliminated.
Before resetting a system error manually, we advise that
you contact our technical service department.
For further information, see Section 17.3.2 Display of
system error.
If the cause of any of the error messages described below cannot be eliminated, contact the device ven-
dor.
17.1 Standard operating mode
The transmitter operates as described above. After the cause of the error message has been eliminated,
the message automatically disappears. The self-test for monitoring the excitation current can be activated
or
deactivated via the “Sensor test” function.
17.2 Custody transfer mode
The transmitter UMC4 is not certified for custody transfer applications.
17.3 List of error messages
17.3.1 Display of self-test errors
Self-test errors are displayed as plain text in the set language (German or English) on the second line of
the LCD.
Display
(German)
Display
(English)
Description
Possible cause of error and
remedy
Rohr leer
empty pipe
Empty-pipe detection has been
activated.
Fluid density is below the limit
value for density; empty-pipe
detection, pipe is empty.
Product contains air bub-
bles/pipe is empty. Bubble-free
filling must be ensured.
Teilfüllung?
Partially filled?
Exciter current large and sensor
signal small
Gas bubbles in the medium or
sensor only part-filled.
Netzausfall?
Power fail?
Will detect the interruption of the
supply voltage for transmitters
approved for custody transfer
operation if the flow rate is >
0.5 % of upper-range value.
Check power supply
Bruch/Schluß T
malfunction T
Interruption/short circuit in the
temperature sensor measuring
circuit
Check the lines between tem-
perature sensor and transmitter.
Measure resistance of PT1000
Bruch/Schluß S1
malfunction S1
Interruption/short circuit in the
connection of sensor coil 1
Check the lines between sensor
coil and transmitter. Measure coil
resistance.
