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Maintenance and service
December 2022
6. Disconnect and remove the O
7. If used, disconnect and remove the external relay leads from the alarm
8. Disconnect and remove customer power and signal wire conduits and
9. Remove insulation to access the sensor housing mounting bolts. Unbolt the
10. Allow the transmitter to cool to a comfortable working temperature.
Install transmitter
Observe the following cautions when installing the transmitter in a hot process
stack. If you shut down and cool the transmitter, you can install it in the stack
prior to connecting the pneumatics and wiring.
CAUTION
Equipment damage
Exposing a cold transmitter to hot process gases can cause permanent damage to
the equipment.
Before installing the transmitter into a hot stack or ductwork, make sure it is
turned on and at a normal operating temperature.
CAUTION
Equipment damage
Failure to connect the pneumatic lines can allow the flow of contaminants into the
transmitter ports.
Whenever a positive stack pressure exists at the installation site, be sure to
connect all pneumatic lines prior to installing the transmitter in the stack or
ductwork.
Procedure
1. Connect the test gas lines and instrument air lines to the electronics
2. Remove the electronics housing cover.
3. Install customer power and signal conduits and wiring at the electronics
4. If used, connect external relay leads to the alarm output relay terminal
5. Connect the O
6. Connect the line (L1 wire) to the L1 terminal and the neutral (N wire) to the
240
signal output terminal block.
output relay terminal block.
wiring from the electronics housing.
transmitter from the stack and take it to a clean work area.
housing.
housing.
block,
Figure
10-2.
and COe signal leads to the 4-20 mA signal output terminal
2
block.
N terminal on the AC power input terminal block.
and COe signal leads from the 4-20 mA
2
Manual
00809-0500-4880
Emerson.com/Rosemount
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