Endress+Hauser Proline t-mass 65 - Process Error Messages; List of Process Error Messages; Process Errors Without Messages

Proline t-mass 65 PROFIBUS DP/PA Trouble-shooting
Endress+Hauser 97
9.3 Process error messages
!
Note!
Also observe the information on the following pages:  ä 40 and  ä 89
9.3.1 List of process error messages
9.4 Process errors without messages
No. Device status message
(local display)
PROFIBUS measured value status
Extended
diagnostic
message in the
PROFIBUS
master
Remedy / spare parts
Quality code (HEX)
Measured variable status
Quality status
Quality substatus
Limits
P = Process error
$ = Fault message (with an effect on the current operation)
! = Notice message (without any effect on the current operation)
422 P: FLOW LIMIT
$: # 422
0x13 BAD Sensor
Failure
Constant Meas. flow
exceeded max limit
Cause:
The measured flow has exceeded the maximum
limit.
Remedy:
Reduce the flow rate or replace the instrument
with a suitable size for the application.
!
Note!
Error can be configured as a fault or notice
message.
731 P: 0 ZERO-ADJ. N. OK.
$: # 731
0x13 BAD Sensor
Failure
Constant Zero adjust is not
ok
Cause:
The saved zero point is inaccurate possibly due to
unstable process or flow conditions.
Remedy:
Stabilize process conditions or relocate the
instrument to a more stable measuring location.
Symptoms Rectification
!
Note!
You may have to change or correct certain settings of the function matrix in order to rectify faults. The functions outlined below, such as DISPLAY DAMPING, for
example, are described in detail in the "Description of Device Functions" manual.
Displayed measured value fluctuates even
though flow is steady.
1. Increase value of the TIME CONSTANT setting CURRENT OUTPUT function group.
2. Increase value of the DISPLAY DAMPING setting USER INTERFACE function group.
3. The inlet and outlet lengths must be observed. See installation conditions  ä 15
4. Consider the use of a flow conditioner. See installation conditions  ä 16
5. Relocate the meter to a point where there is less flow disturbance
Device displays flow with no actual flow
present.
1. The low flow cut off value is programmed too low. Increase value of the ON VALUE LOW FLOW CUT OFF
setting  PROCESS PARAMETERS function group (Factory setting = 1% of 20mA value).
2. Check for leaks in the pipe line downsteam of the sensor.
3. Reduce or eliminate pressure pulsations in the line.