Heinrichs Messtechnik GmbH
OPERATING MANUAL TMU-W / UMC4
Page 109 of 118
List of error messages
8.2.3.1
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
(English)
Description
Possible cause of error and remedy
empty pipe
Empty-pipe detection has been
activated.
The density of the medium is less
than the set limit for the empty
pipe detec-tion, pipe is empty.
Product contains air bubbles/pipe is empty. Bubble-
free filling must be ensured.
Partially filled? The exciter cannot stimulate the
pipes sufficiently to achieve the
necessary vibration amplitude
This error can be caused through air / gas bubbles in
the pipes or through a partial filling.
Power fail?
Detects a power disruption in
custody transfer applications during
a mass-flow of Q > 0.5 % from the
measurement range end-value. By
no-flow conditions, the power can be
disconnected without error. Only
valid when “Sticky Alarms” are
activated
Check power supply
malfunction T
Wire breakage / short circuit in the
temperature measurement circuit
Check the lines between temperature sensor and
transmitter.
Measure resistance of PT1000
malfunction S1 Wire breakage / short circuit of the
sensor coil 1 connection.
Check the lines between sensor coil and transmitter.
Measure coil resistance.
malfunction S2 Wire breakage / short circuit of the
sensor coil 2 connection.
Check the lines between sensor coil and transmitter.
Measure coil resistance.
