Baker Hughes Masoneilan 12400 Series, Инструкция по эксплуатации и руководство по безопасности, Страница: 61 / 81

® 2017 Baker Hughes, a GE company. All rights reserved. Masoneilan 12400 Series Transmitter/Controller Instruction Manual | 59
Message on LCD /
ValVue (English)
Description
Device Action
(Warning message only or
Failsafe position)
Probable Cause Recommended Action
V OLTAGE HART
®
L OW HART voltage below threshold Warning message Internal voltage may have
changed Clear the condition using
ValVue software or HART
host.
If the failure persists, replace
the device.
V OLTAGE HART
®
H IGH HART voltage above threshold Warning message Internal voltage may have
changed Clear the condition using
ValVue software or HART
host.
If the failure persists, replace
the device.
V OLTAGE CORE L OW Core (CPU) voltage below threshold Warning message Internal voltage may have
changed Clear the condition using
ValVue software or HART
host.
If the failure persists, replace
the device.
V OLTAGE CORE H IGH Core (CPU) voltage above threshold Warning message Internal voltage may have
changed Clear the condition using
ValVue software or HART
host.
If the failure persists, replace
the device.
LEVEL OUTPUT
SATUTARED Normal level output is clamped from
below at 3.8 mA or from above at 20.5 mA Warning message Level variable is saturated and
outside the normao operating
range (3.8 to 20.5mA) Reduce level measurement
or checl configuration and
calibration.
L E V E L RANGE Specific Gravity recalculated range
exceeded the linearization table limits Warning message Specific Gravity value(s) is(are)
incorrect or bad calibration Check Specific Gravity data
or instrument calibration
L E V E L CLAMP Internal position or adjusted position is
outside the range of +/- 200% Warning message Bad calibration or mechanical
hardware adjustment Check displacer and torque
tube S/A characteristics.
Redo calibration.
SG L E V E L MAX Absolute value of Specific Gravity
recalculated range is too small Warning message Specific Gravity value(s) is(are)
incorrect Check Specific Gravity data
SENSOR SUPPLY
V OLTAGE
Sensor supply voltage was outside sensor
specification Failsafe position Lack of supply power or circuit
board component failure Clear the condition using
ValVue software or HART
host.
Check supply power.
If the failure persists, replace
the device.
SENS O R OFF Sensor turned off because of too low
analog current during 5 seconds Warning message Lack of supply power or circuit
board component failure Clear the condition using
ValVue software or HART
host.
Check supply power.
If the failure persists, replace
the device.
LEVEL FAIL URE, OUT
OF RANGE
Level value is critically out of range (above
105% or below -5%) for a predefined time
(10 to 1000 seconds). Failsafe position
- Fail Low only for a SIL device
Bad calibration or mechanical
hardware adjustment Check displacer and torque
tube S/A characteristics.
Redo calibration.
SENSOR OUT OF
RANGE
(SIL)
Level value is critically out of normal range
which includes limits of full linearization
table range Failsafe position (Fail Low) Bad calibration or mechanical
hardware adjustment Check displacer and torque
tube S/A characteristics.
Redo calibration.
4-20 LOOP OUTPUT
FAIL URE (SIL)
Mismatch between commanded and read
4-20 mA loop output (lower than 0.64 mA) Failsafe position (Fail Low) Resistance change of external
loop may have changed Perform an instrument reset
or switch off then switch on.
If the failure persists, replace
the device.