SMARTSTEM0 pages

SMARTSTEM

Features

• Accuracy ±0.50% F.S
• Each SMARTSTEM Transducer
is calibrated to its nominal
load capacity

• Calibration traceable to NIST
• Compatible with commercially
available valve stems

• Custom sizes available
• Temperature compensated
• Prompt delivery

Qualification
The SMARTSTEM manufacturing
process is controlled under the TTS
Quality Assurance Program, which
complies with 10CFR50, Appendix
B. Design verification is provided as
an option. Calibration certification
traceable to NIST is provided for each
TTS SMARTSTEM.

508-748-0103
www.valvetest.com

Background

Description

Utilities operating nuclear power plants
agree that the correct functioning
of all motor-operated valves, and
particularly those in safety-related
systems, is of paramount importance.
The Nuclear Regulatory Commission
has issued Generic Letter 89-10
and other documents which relate
to this concern. Operability must be
demonstrated under design-basis
conditions if practical. Described below
is a Teledyne Test Services (TTS)
patented transducer that differs from
all existing measure-ment techniques
currently offered.

The TTS SMARTSTEM measures stem
thrust and/or torque using bonded
resistance strain gages directly
mounted to the valve stem. Using
proprietary techniques available only
to TTS, the patented SMARTSTEM
is the most accurate means of
measuring loads experienced by the
valve stem, as demonstrated at an
industry-sponsored validation program.
SMARTSTEM transducers are direct
replacements of the valve stems
supplied by the valve manufacturers.

Accuracy

The SMARTSTEM Transducer
measures loads using a strain gage
sensing element sensitive to thrust
and/or torque loads. Strain is related
to thrust or torque during a laboratory
calibration. This calibration is traceable
to the National Institute of Standards
and Technology. A SMARTSTEM Transducer is a direct replacement of the
original valve stem supplied by
the manufacturer.

SMARTSTEMs have a calibrated
accuracy to ±0.50% of full scale.

Diagnostic Systems
In addition to the TTS SMARTSTEM,
TTS offers a motor-operated valve
testing and diagnostic system,
QUIKLOOK, which provides a
nearly instantaneous review of the
SMARTSTEM thrust and torque
signal data.

SMARTSTEM
Transducer Desciption

For more information, please visit our website or email sales_testservices@teledyne.com

© 2010 by Teledyne Test Services. All rights reserved. Specifications, prices, availability, and delivery subject to change without notice.
Product or brand names are trademarks or requested trademarks of their respective holders.

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