23
Model 763A Gage Pressure Transmitter
Section 4
Leadwire/Connector Replacement
Leadwires are part of the connector assembly. Therefore, replacement of
leadwires requires the replacement of the connector assembly. The EGS
Quick Disconnect connector is installed on all 763A transmitters manufac-
tured by Cameron.
The Barton style connector assembly previously used with 763A transmitters
is not manufactured by Cameron and is no longer available for purchase. The
EGS connector is an ideal replacement for the Barton style assembly.
The following procedures describe the steps required to remove or install
either connector assembly.
Removal of the EGS Quick Disconnect Connector Assembly
To remove the EGS Quick Disconnect connector assembly, perform the fol-
lowing steps.
1. Remove the transmitter from service and de-energize it.
2. Remove the transmitter cover (see procedure on
page 21
).
3. Disconnect the red and black signal leads from the transmitter circuit
board (TB 1-7 & TB 2-6) as shown in Figure 4.2,
page 24
.
4. Disconnect the connector assembly, if applicable.
5. Carefully unscrew and remove the unmated connector assembly. Take
care not to damage the wires and prevent damage to the transmitter by
using a wrench to hold the conduit hub in place while the quick discon-
nect is loosened.
Installation of the EGS Quick Disconnect Connector Assembly
To install the EGS Quick Disconnect connector assembly (Part No.
9A-C0764-1304B), perform the following steps.
1. Remove the installed connector, as applicable.
2. Carefully insert the red and black leads of the unmated EGS Quick Dis-
connect (QDC) connector through the transmitter conduit opening and
under the Zero and Span mounting bracket.
3. Apply EGS QDC thread sealant (Part No. 9A-C0002-1067U) to the male
NPT threads, starting with the second thread, on the end of the QDC con-
taining the red and black leads. Securely holding the transmitter conduit
hub in place with a wrench, carefully thread the QDC into the transmitter
conduit hub and tighten to 50 to 75 ft-lb. Take care to protect the QDC
leads during the connector tightening process.
4. Tighten the two base screws on the Zero and Span mounting bracket, if
necessary.
5. Install the transmitter cover (see procedure on
page 21
).
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