Measure Displacer Weight - Honeywell FlexLine SmartServo 954 Service Manual

MAINTENANCE

Measure displacer weight

Entity name
[Lock Test]
[Measure frequency]
[Measured frequency
status]
[Measured weight]
[Measured
compensated weight]
[Unlock]
Part No.: 4417340 Revision 1
The weight of the displacer can be measured with the following
procedure:
Entity name
(SmartView)
[Lock Test]
(Product level)
[Measure freq]
(Product level)
-
-
[MF comp weight [kg]]
(Product level)
[Unlock]
(Product level)
Clean the displacer when the displacer's weight differs more than 3 g
from the value in entity [Displacer weight] or recalibrate the force
transducer with the test weights (refer to section 9.49.5. For
replacement of the printed circuit boards, motor block or force
transducer (refer to section 9.4). After replacement of force transducer
or motor block the force transducer requires re-calibration (refer to
section 9.5).
The 954 SmartServo FlexLine is an explosion proof instrument with intrinsically safe
output/input circuits. Modification to the instrument may only be carried out by trained
personnel which is authorized by Honeywell Enraf. Failure to adhere to this will
invalidate the approval certificate.
Service Manual
954 SmartServo FlexLine
Description
Raise the displacer for approximately 0.3 m (1 ft)
above the product level.
This can be done by setting the entity
[Lock test motor limit switch level] to the appropriate
level value before the [Lock test] command is
issued or by issuing the [Freeze] command when
the displacer has reached the appropriate level.
Wait till the displacer is in a complete rest (one or
two minutes).
Measure the frequency of the force transducer.
When the measure frequency command is ready:
•
the status on the display changes from MF
to FR
•
the displacer level primary value status
code changes from 'Measure Frequency
command active' into 'Freeze command
active'
•
the [Measured frequency status] changes
from 'Command active' to 'Command not
active'.
'Command active' when the gauge is measuring
'Command not active' when the command is
finished or not started yet.
Measured weight including the wire weight
Measured weight compensated for the wire weight.
Cancel the block / freeze command.
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