Emerson Rosemount 1152 Alphaline, Reference Manual

Page: 41 / 68

Reference Manual
00809-0100-4235, Rev BA
April 2007
Rosemount 1152
www.emersonprocess.com/rosemount/nuclear
Section 5 Maintenance and
Troubleshooting
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-1
Test Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-2
Board Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-2
Sensing Module Checkout . . . . . . . . . . . . . . . . . . . . . . . . . page 5-2
Disassembly Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-3
Reassembly Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-5
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 the “Important Notice” on page 6-10 and the
Important Notice
at the beginning of this manual, preceding the Table of Contents ).
The Rosemount 1152 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 separated into three active physical components: the
sensing module, the amplifier board, and the calibration board.
An exploded view drawing is provided in Figure 5-2 on page 5-6. In the
following procedures, numbers in parentheses refer to item numbers in the
exploded view.
SAFETY MESSAGES
Instructions and procedures in this section may require special precautions to
ensure the safety of the people performing the operations. Information that
raises potential safety issues is indicated by a warning message. The
following warning messages appear in this section.
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.