Power The Transmitter; Cover Jam Screw - Emerson Rosemount 3051S Series Reference Manual

Reference Manual
00809-0100-4801, Rev HA
Figure 3-17. Quick Connect Housing Pin-Out
A
A. Ground
B. No connection
For other wiring details, refer to pin-out drawing and the cordset manufacturer's installation
instructions.
3.6.7

Power the transmitter

Power supply 4–20 mA transmitters
The dc power supply should provide power with less than two percent ripple. Total resistance load is the
sum of resistance from signal leads and the load resistance of the controller, indicator, and related
pieces. Note the resistance of intrinsic safety barriers, if used, must be included.
3.6.8

Cover jam screw

For transmitter housings shipped with a cover jam screw, as shown in
properly installed once the transmitter has been wired and powered up. The cover jam screw is intended
to disallow the removal of the transmitter cover in flameproof environments without the use of tooling.
Follow these steps to install the cover jam screw:
1. Verify the cover jam screw is completely threaded into the housing.
2. Install the transmitter housing cover and verify the cover is tight against the housing.
3. Using an M4 hex wrench, loosen the jam screw until it contacts the transmitter cover.
4. Turn the jam screw an additional
Note
Application of excessive torque may strip the threads.
5. Verify the cover cannot be removed.
Installation
+
-
B
/ turn counterclockwise to secure the cover.
1
2
Installation
October 2018
Figure 3-18, the screw should be
67