Emerson 1154, 00809-0100-4514 manual Rosemount

Page 41

Reference Manual

00809-0100-4514, Rev BA January 2008

Rosemount 1154

Preliminary

Connecting the Electrical Housing to the Sensor Module

Electrical Housing

Reassembly

1.Replace the cover O-rings (2) whenever you remove a cover. Clean the sealing areas with alcohol, if necessary, and lightly grease the O-ring with Dow Corning 55 Silicone O-ring Grease (Rosemount P/N 01153-0248-0001 or P/N 01153-0053-0001). Spray the inside threads of the electronics covers with cover lubricant (Rosemount P/N

01153-0333-0001 or equivalent) if necessary; if covers are already sufficiently lubricated, do not spray.

2.Verify that the circuit boards are clean.

3.Verify that the bayonet pins on the connection board are clean.

4.If you remove the sensor module, clean the thread sealant from the sensor module threads, lock nut, and electronics housing threads with a wire brush.

1.Run the lock nut down to the base of the sensor module threads.

2.Apply a heavy, continuous bead (about 3/8-in. wide) of Loctite®

580-PST sealant (RMT P/N 01153-0329-0001) around the top sensor module threads.

3.Insert the header assembly board (4) through the hole in the bottom of the electronics housing.

4.Screw the sensor module (12) into the electrical housing (3) making sure that five full threads are engaged. Be careful not to damage or twist the sensor leads. Turn the header board to avoid

twisting wires.

5.Align the sensor module with the high and low pressure sides oriented per Figure 2-5 on page 2-7.Alternately, tighten the module one-half turn further to reverse the orientation of the module about the electronics housing.

6.Tighten the lock nut (9) to 35 ft-lb (48 N-m) torque.

7.Wipe off excess sealant.

8.Place the assembled unit in an oven at 200 ±5 °F (93 ± 3 °C) for 12 hours to cure the sealant.

1.Replace the zero and span adjustment screw O-rings (19) whenever you remove the zero and span adjustment screws (16). Lightly grease the O-rings with Dow Corning 55 Silicone O-ring Grease (Rosemount P/N 01153-0248-0001 or P/N 01153-0053-0001). Reinstall the adjustment screws and secure with snap rings (18).

2.Align the zero and span adjustment screws with the potentiometer stems on the calibration board (5) and push the calibration board onto the bayonet pins.

3.Slide the header assembly board (4) onto the bayonet pins with the component side toward the pins. Slide any excess wire behind the calibration board, taking care to avoid kinks.

4.Push the amplifier board (6) onto the bayonet pins and secure with holding screws (7). Use nominal torque of 10 in-lb (1.1 N-m).

5.Carefully replace the cover and tighten to 16.5 ft-lb (22.4 N-m) (“Preliminary” on page 5-7).

6.Replace the nameplate (17), and secure with two nameplate screws (20).

5-7

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Contents Reference Manual RosemountImportant Notice -- Errata Rosemount 1154 Alphaline Nuclear Pressure Transmitter Return of Material New Old Changes Revision StatusChanges From June 1999 to January Rosemount Table of Contents Section Maintenance TroubleshootingSpecifications Reference Data TOC-3 TOC-4 Overview About the Transmitter Section IntroductionRosemount Overview General Considerations Section InstallationProcess Connections Mechanical ConsiderationsRosemount Electrical Considerations ConduitTransmitter Wiring Connections Mechanical InstallationProcedures Range Code Pressure DimensionElectrical Liquid ServiceTransmitter Terminal Block Rosemount Overview Calibration Span Adjustment Zero AdjustmentSection Calibration Zero and Span Adjustment Calibration ProceduresZero and Span Adjustment Screws Linearity Adjustment Linearity and Damping Adjustment Damping AdjustmentRosemount Calculate zero adjustment correction in terms of pressure Rosemount Overview Transmitter Operation Section OperationΔ-Cell Demodulator Linearity AdjustmentFV Iref Overview Maintenance TroubleshootingTest Terminals Board Checkout Safety MessagesSensing Module Checkout Process Flange Removal Disassembly ProcedurePart Description Rosemount 1154 Parts ListReassembly Procedure Rosemount Process Flange Reassembly On Next Post Assembly TestsSymptom Potential Source Corrective Action Check for adequate voltage to the transmitter Nuclear Specifications Specifications and Reference DataPerformance Specifications Range Code Overpressure Effect Range Code Response Time Functional SpecificationsRange Code Static Pressure Zero Effect 25 to 0-150 inH2O 0-6.22 to 0-37.3 kPa Range Code Pressure RangesRange Code Overpressure Limit Physical SpecificationsRosemount Ordering Information Rosemount 1154DP 1154HP 1154GP Part Description Order No Rosemount 1154DP, 1154HP, and 1154GP Spare PartsFor use with existing N0026 transmitter only Spare Parts Shelf Life Important Notice Rosemount Current Control Current Limit Index-2 Page ¢00809-XXXX-XXXX ¤
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