Honeywell HPM, Service

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7 IOP Calibration Procedures
7.4 LLAI IOP Calibration Procedure
444 HPM High-Performance Process Manager Service R688
Honeywell December 2020
RJ calibration circuit for RJ full scale
Figure 214 RJ Calibration Circuit
– RJ Full Scale
Be sure there is one wi re conne cte d to th e "A" termi nal and one wi re conn ected to th e "B" termin al.
Th ere s houl d be two wire sco nnecte d to the "C" term inal .
Cali brate any time the therm oco upl e is don e calib rated .
R cal = 2 kohm precisi on re sistor. Be s ure the conn ection is m ade to only the termin als for chan nel 1.
Note :
A
B
C
Shield
Model MU/MC-TAIL01 and MU/MC-TAIL02 FTAs
Model MU/MC-TAIL03 FTA
A
B
C
Shield
1 3
Install the jumper between pins 1 and 2.
2
P1
NC
17
TB2
Remove the wire between
TB-1 and TB2-17.
R cal
R cal
Reference
TB1
Channel 1
TB1
Channel 1
1
2
3
4
1
2
3
4
2487
Step Action
8
Ensure that the calibration target on the LLAI Detail Status display has changed back to
ENABLE CALIBRATION , indicating that the zero and span calibration process has
completed.
9
Check the LLAI IOP card for Soft failures. If a Soft failure occurred, find the source of
the failure, correct it, and repeat the calibration procedure. If none occurred, remove
the test equipment from the FTA and reconnect the field wiring. If the FTA has screw
terminal strips, replace the plastic cover over the strips.
10 Inform the operator that the LLAI subsystem can be returned to on-line operation.