Cerabar S/Deltabar S/Deltapilot S 4...20mA HART
Trouble-shooting
Hauser
137
725 (A725)
Alarm
B
Failure (F)
B>Sensor connection error,
cycle disturbance
– Electromagnetic effects are
greater than specifications in the
technical data.
See Technical
Information TI00382P (Deltabar
S), TI00383P (Cerabar S) or
TI00416P (Deltapilot S).
– Setscrew loose.
– Block off electromagnetic effects
or eliminate source of
disturbance.
– Retighten setscrew with 1 Nm
(0,74 lbf ft) (see chapter
"Rotating the housing" in
BA00270P (Deltabar S),
BA00271P (Cerabar S),
BA00332P (Deltapilot S).
25
– Sensor or main electronics defect. – Replace sensor or main
electronics.
726 (E726)
Error
C
Factory
setting:
Warning C
Out of
specification
(S)
C>Sensor temperature error -
overrange
– Electromagnetic effects are
greater than specifications in the
technical data.
See Technical
Information TI00382P (Deltabar
S), TI00383P (Cerabar S) or
TI00416P (Deltapilot S).
– Block off electromagnetic effects
or eliminate source of
disturbance.
31
– Process temperature is outside
permitted range.
– Check temperature present,
reduce or increase if necessary.
– Sensor defect.
– If the process temperature is
within the permitted range,
replace sensor.
727 (E727)
Error
C
Factory
setting:
Warning C
Out of
specification
(S)
C>Sensor pressure error -
overrange
– Electromagnetic effects are
greater than specifications in the
technical data.
See Technical
Information TI00382P (Deltabar
S), TI00383P (Cerabar S) or
TI00416P (Deltapilot S).
– Block off electromagnetic effects
or eliminate source of
disturbance.
28
– Pressure is outside permitted
range.
– Check pressure present, reduce
or increase if necessary.
– Sensor defect.
– If the pressure is within the
permitted range, replace sensor.
728 (A728)
Alarm
B
Failure (F)
B>RAM error
– Fault in the main electronics.
– Briefly disconnect device from
the power supply.
2
– Main electronics defect.
– Replace main electronics.
729 (A729)
Alarm
B
Failure (F)
B>RAM error
– Fault in the main electronics.
– Briefly disconnect device from
the power supply.
3
– Main electronics defect.
– Replace main electronics.
730 (E730)
Error
C
Factory
setting:
Warning C
Out of
specification
(S)
C>LRV user limits exceeded
– Pressure measured value has
undershot the value specified for
the Pmin ALARM WINDOW
parameter.
– Check system/pressure
measured value.
– Change value for Pmin ALARM
WINDOW if necessary. (
See
also Page 130, parameter
description Pmin ALARM
WINDOW.)
46
– Loose connection at sensor cable
– Wait a short period of time and
tighten the connection, or avoid
loose connection.
Code
Error type/
NA 64
Corresponds
NE 107
Message/description
Cause
Measure
Prio
rity