10
Section 3
Model 753A Gage Pressure Transmitter
Section 3—Installation, Startup, and Shutdown
Overview
This section describes the steps required to install the instrument so that it
will perform to its original factory calibration condition. Installation tasks
include
•
initial calibration check
•
mounting the transmitter
•
installing piping
•
installing field wiring
Unpacking/Inspection
The instrument should be inspected at the time of unpacking to detect any
damage that may have occurred during shipment.
IMPORTANT: The unit was checked for accuracy at the factory. Do not change any of
the settings during examination or accuracy will be affected.
If the transmitter is Class II cleaned, it is shipped in a polyethylene bag to
protect the instrument from contamination. Remove this bag only in a clean
area.
Initial Calibration Check
The Model 753A transmitter is factory-calibrated. However, to ensure that the
calibration is intact following shipping, a calibration check is recommended
prior to operating the instrument. See
Calibration, page 16
, for step-by-step
instructions. Record the "as found" values and recalibrate, if necessary.
Mounting
Mount the transmitter so that the transmitter cover is facing the operator and
the controls are on the right side. Use mounting structures that are designed to
minimize vibration and prevent resonance. Support connected process tubing
and conduit using the same mounting as the instrument base to minimize rela
-
tive motion of the instrument and connections.
Wall or Rack Mounting
1.
Locate and drill four bracket mounting holes in the mounting surface.
2.
Attach the instrument to the wall using 5/16" (8 mm) bolts, Grade 5 or
better, and torque to 10-20 ft-lb.
