Rh eo n i k M esst ech n i k
RE V . L O ct o b er 2014
.
RHEONIK Coriolis Flowmeter
Operation Manual RHE 07, 08, 11
Page
28
3. Error codes
The internal microcontroller continually monitors several voltages and signals and checks
proper operation of the sensor-transmitter measurement system.
If an error occurs, a fault code is displayed on the transmitter display. Error codes, which
occur immediately after initial installation, are usually caused by incorrect electrical wir-
ing or improper flow sensor installation (i.e. sensor tubes not totally filled with liquid).
A transmitter, which is not properly wired to the flow sensor, will indicate
ERR 2
code.
Possible error codes are:
Code
Display
Description
_____________________________________________________________________
Err 1
Drive
Drive signal error. Drive amplifier gives maximum power
possible causes:
extreme unbalanced vibrating sensor system (for instance: gas
bubbles in the pipe loops or pipes are not filled completely)
drive coil (terminal 1-2) defective
Err 2
Pick-up
one of the two sensor signals pick-up 1 or 2 is not correct
possible causes:
the wiring is incorrect
one or both coils defective
defective component on safety or amplifier board
Sensor is not moving
Check sensor and wiring according to trouble-shooting section
.
Err 3
Temperature
The temperature detected by the PT 100 inside the sensor RHM is
outside of the allowed range (-154 ... 360 °C) or temperature is
outside of the allowable operating temperature, adjusted in
MaxTemp
menu.
Possible causes:
PT 100 defective or circuit open or shortened
defective component on safety or amplifier board
defective analog to digital converter inside
defective voltage supply (component U7 or U9)
temperature measurement not properly adjusted