
2104349 rev. AD
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10) Gain access to the G4 EX board by loosening the countersunk hex socket
locking set screw in the front en
d cap. Use a 1/16” hex wrench to perform
this task. When completed, unscrew the end cap.
11) After the end cap has been removed, gently pull the display overlay and
graphic overlay plate away from the snap on standoffs.
12) After the graphic overlay plate is off, gently remove the lithium battery
connector (J5) from the G4 EX board.
13) Upon removal of the lithium battery connector, snap the board out of the
device. Please note that the board is still connected to the device through
the cables in the back.
14) Unplug the raw sensor connector cable (J6) and the ribbon cable (J1) from
the G4 EX board.
15) Gently remove the board from the G4 EX device.
16)
Loosen the 2” mounting pole U-bolts. Rotate/lower the unit a sufficient
distance so that the transducer can be removed.
17) Loosen the
hex socket head set screws on the neck of the unit using a 3/32”
hex wrench. Continue until the transducer turns freely. Gently turn counter-
clockwise until the transducer is free from the enclosure.
18) Replace the transducer and raw sensor board with a new/repaired/spare
unit of the same type and pressure rating.
19) Reconnect the high/low manifold lines, and restore pressure.
20) Reassemble the unit by performing steps 10-14 in reverse order.
21) Following the instructions in section 4.3, restore the station files.
4.13 Calibration
The calibration mode allows the user to calibrate, check and zero the static and
differential pressure. Additionally, this mode allows the user to set the bias for the
resistance temperature detector (RTD). During the initial calibration, the
parameters shown in Table 4
–1 will need to be configured.
Table 4
–1 Calibration configurable parameters
Parameter
Default Value
Units
RTD Installed
No
RTD Bias
0.00
Degrees F
Temperature Base (Tb)
60.000
Degrees F
Used Fixed Temperature (TF)
No
4.13.1 Required test equipment
The following test equipment is required to calibrate the G4 EX EXIMV:
-
PCCU32 version 7.17 or later
-
Deadweight tester or equivalent calibration standard
-
Test gauge capable of dual range measurement (PSIG and inches)
-
Barometer or another means which can determine barometric pressure
-
Nitrogen or compressed air source
Summary of Contents for XSeries G4 6200
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