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10/04 34-ST-99-25 (Addendum to 33-ST-33-39) 1 of 4
ST 3000 Smart Transmitter
Release 300 and Smart Field
Communicator Model STS103
Transmitter Models:
STD110, STD120, STD125, STD130, STD170,
STD924, STD930
34-ST-99-25
10/04
Addendum
(to Installation Guide
34-ST-33-39)
Overview
Replacement Meterbody and Heads
The ST 3000 Pressure Transmitter, Models:
• STD110, STD120, STD125, STD130, and STD170
• STD924 and STD930 with optional Tantalum or Monel diaphragm
is now being shipped with newly designed meter body and process heads. If a
replacement meter body is needed, it should be ordered from the Model Number stated
on the meter body nameplate. This number includes the letter “S” after the model
number; for example, STD110S-xxx.
This new transmitter is functionally identical to previous models in that the working
ranges (Lower Range Limit to Upper Range Limit) and intended applications have not
changed. However, the specifications for the maximum Pressure Rating and for the
Overpressure Rating have been enhanced in all models except the draft range
transmitter. A summary of specifications is given in Table 3.
The new versions, which will continue as Models STD110, STD120, STD125,
STD130, STD170, STD924, and STD930, differ only in the physical size and form of
the meter body, process head, and associated components.
Installation, operation, maintenance, calibration, and troubleshooting tasks remain
virtually the same as for the previous version. Differences appear primarily in torque
specifications when replacing meter bodies, and in part numbering and part
recognition when replacing components or assemblies.
As an aid in parts recognition, a drawing of the newer style Meter Body, Heads, and
Flange Adapters is given in Figure 1 of this addendum. (The flanges on the Process
Heads and the Flange Adapters have an angular profile, compared to those on the
previous style, which are approximately elliptical in profile.)
For parts details, refer to 34-ST-99-22, Addendum to 34-ST-25-14.
With exceptions noted in this addendum, information given in Installation Guide
34-ST-33-39 applies also to the newer style.
Related
Publications
This addendum provides details for installation that span a variety of applications of
the Models listed in this addendum. For additional information, refer also to the
appropriate publications.
ST 3000 Smart Transmitter
Release 300 and Smart Field Communicator STS103
User’s Manual
34-ST-25-14 (with addendum 34-ST-99-21)