Emerson 1154 Post Assembly Tests, Rosemount, Reference Manual, Items To Be Torqued, Torque Value

Reference Manual

00809-0100-4514, Rev BA January 2008

Rosemount 1154

POST ASSEMBLY TESTS

1.Conduct hydrostatic testing to 150% of maximum working pressure or 2,000 psi, whichever is greater.

2.Calibrate the transmitter per the calibration section of this manual.

3.Conduct nuclear cleaning to 1 ppm chloride content of transmitter “wetted parts.”

Table 5-2. Torque References.

ITEM(S) TO BE TORQUED	TORQUE VALUE	TOLERANCE
Bracket to Mounting Panel Bolts	19 ft-lb (26 N-m)	±1 ft-lb (1 N-m)
Transmitter to Bracket Bolts	21 ft-lb (29 N-m)	±1 ft-lb (1 N-m)
Swagelok Process Fittings	See Installation Instructions	—
Drain/Vent Valves	7.5 ft-lb (10 N-m)	±0.5 ft-lb (0.7 N-m)
Covers	16.5 ft-lb (22.4 N-m)	±1 ft-lb (1 N-m)
Module Neck Lock Nut	35 ft-lb (48 N-m)	±1 ft-lb (1 N-m)
Conduit Fitting	4 to 7 turns or a minimum of 12.5 ft-lb (16.9	±1 ft-lb (1 N-m)
	N-m)
Flange Bolts	See Process Flange Reassembly	—
Terminal Block Screws	5 in-lb (0.6 N-m) or hand tight	±1 in-lb (0.1 N-m)
Amplifier Board Screws	Nominal 10 in-lb (1.1 N-m)	—

Table 5-3. Troubleshooting.

Symptom	Potential Source	Corrective Action
High Output	Primary Element	Check for restrictions at primary element, improper installation or poor condition. Note any
		changes in process fluid properties that may affect output.
	Impulse Piping	Check for leaks or blockage.
		Ensure blocking locking valves are fully open.
		Check for entrapped gas in liquid lines, or liquid in dry lines.
		Ensure that density of fluid in impulse line is unchanged.
		Check for sediment in transmitter process flanges.
	Transmitter	Make sure that post connectors and the sensor connections are clean. If the electronics are
	Electronics	still suspect, substitute new electronics.
	Transmitter	Determine faulty circuit board by trying spare boards. Replace faulty circuit board.
	Electronics Failure
	Sensing Module	See Sensing Module Checkout section. The sensing element is not field repairable and must
		be replaced if found to be defective. See “Disassembly Procedure” for instructions on
		disassembly. Check for obvious defects, such as a punctured isolating diaphragm or fill fluid
		loss, and contact Rosemount Nuclear Instruments, Inc. at (952) 949-5210.
	Power Supply	Check the power supply output voltage at the transmitter.
		Continued on Next Page

5-9