Ametek 742C, Operation, Maintenance, And Installation Instructions, Page: 28 / 32

CHAPTER 7
INSTALLATION
7-1 INTRODUCTION. This chapter contains the information pertaining to the installation of the transducer.
This information includes sitting, installation procedures, electrical and pneumatic interface requirements and post
installation checkout procedures.
7-2 SITE. The transducer may be mounted in any orientation. The preferred direction is with the input
pressure or high-side port facing downward. The transducer should be mounted on a structure/panel with sufficient
access for maintenance and testing.
7-3 INSTALLATION PROCEDURES. One technician is required to install the transducer. Install the
transducer as follows (Refer to Figure 7-1 or 7-2):
a) Position the transducer on the mounting surface.
b) Secure the transducer to the mounting surface by installing two bolts (1/4 inch), washers and
nuts through the mounting holes in the transducer housing.
WARNING
Insure that electrical power is removed from the cable assembly prior to connecting cable
to the pressure transducer.
7-4 ELECTRICAL INTERFACE REQUIREMENTS. Connect the cable assembly MS electrical connector to
the MS electrical connector on the transducer. (+) signal is pin A, (-) signal in pin B, and case ground in pin C of the
MS connector. (Refer to Figure 7-1 or 7-2.)
For voltage output option, connect the cable assembly MS electrical connector to the MS electrical connector
on the transducer. (+) power is pin A, (-) power in pin B, (+) Voltage out is pin D, (-) Voltage out is pin E, and case
ground in pin C of the MS connector. (Refer to Figure 7-1 or 7-2.)
7-5 PNEUMATIC INTERFACE REQUIREMENTS. For gauge, compound or vacuum transducers, connect
the pressure input connector to the MS16142 1/4-inch tube connector on the pressure transducer (Refer to Figure 7-1).
For differential pressure transducers, connect the high pressure to the MS16142 ¼ inch tube connector labeled
HP. Connect the low pressure to the MS16142 ¼ inch tube connector labeled LP. (Refer to Figure 7-2)
7-6 POST INSTALLATION CHECKOUT. Post installation checkout consists of performing the performance
tests specified in paragraph 6-3.
7-1