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Reference Manual
00809-0100-4514, Rev BA
January 2008
Rosemount 1154
www.rosemountnuclear.com
Section 5 Maintenance and
Troubleshooting
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-2
Test Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-2
Board Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 5-2
Sensing Module Checkout . . . . . . . . . . . . . . . . . . . . . . . . . page 5-3
Disassembly Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . .page 5-4
Reassembly Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . .page 5-6
Post Assembly Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-9
OVERVIEW This section outlines a technique for checking out the components, a method
for disassembly and reassembly, and a troubleshooting guide.
NOTE
Maintenance of traceability of any replacement parts is the responsibility of
the user (see “Important Notice” on page 6-11 and Important Notice at the
beginning of this manual preceding the Table of Contents).
The Rosemount 1154 has no moving parts and requires a minimum of
scheduled maintenance. Calibration procedures for range adjustment are
outlined in Section 3: Calibration. A calibration check should be conducted
after inadvertent exposure to overpressure, unless your plant considers this
factor separately in the plant error analysis.
Test terminals are available for in-process checks. For further checks, the
transmitter can be divided into three active physical components: the sensing
module, the amplifier board, and the calibration board.
An exploded view of the transmitter is provided in Figure 5-2 on page 5-5. In
the following procedures, numbers in parentheses refer to item numbers in the
exploded view.
Use only the procedures and new parts specifically referenced in this manual to
ensure specification performance and certification compliance. Unauthorized
procedures or parts can render the instrument dangerous to life, limb, or property.