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The FlowScanner 6000 is a powerful valve
diagnostic tool that helps you evaluate the condition of most Air
Operated Valves and analyze operating forces from measured actuator
pressure. In certain situations, you may want the added ability
to measure forces more directly through strain gauge sensors attached
to the valve stem. Adding a Strain Gauge Interface to your FlowScanner
6000 will give you that capability. The interface is well matched
to the high resolution and range of the FlowScanner 6000 input channel
— it will give you a low-noise signal that can measure and
graph the range of loads on the stem from light friction up to full
seating forces.
The Strain Gauge Interface Module is designed for easy integration
and use. The interface module mounts in the accessory pocket of
the FlowScanner 6000 operating case and draws power from the FlowScanner
6000—no external power source is required.
Cabling is simple with the Strain Gauge Interface Module. Using
a standard Teledyne QSS connection, the sensor cable can be integrated
with other valve connections in a common cable and tubing tether.
Because this single, short tether carries the control signal, the
travel signal, four pressure lines, and the strain gauge signal,
you’ll only need to run one line from the FlowScanner 6000
to the valve assembly. The cable is well suited to the vast majority
of AOVs. For AOV assemblies requiring more pressure or auxiliary
signal lines, you can use a second bundle or individual lines.
For added convenience, you can leave the cable tether attached
to the FlowScanner 6000 during normal use, and then simply coil
it inside the top cover for transport and storage. The strain gauge
sensor cable can also remain connected to the interface.
Unique Features of the FlowScanner 6000 Strain Gauge Interface
Module
Complete, compact integration — The Strain Gauge
Interface is designed for easy integration and use with the FlowScanner
6000. Simply slip the interface module into the accessory pocket
of the FlowScanner 6000’s operating case, and you’ll have
a compact, highly portable field kit.
Shared power system — Unlike generic interfaces
that require external power sources, the integrated Strain Gauge
Interface Module draws power directly from the FlowScanner™ 6000.
Low power consumption — By consuming under 70
mA of current, the Strain Gauge Interface Module maximizes the life
of the battery in the field.
Direct connection to Teledyne QSS stem sensors —
With Strain Gauge Interface Module, you can use a standard connection
with the popular Teledyne QSS and c-clamp sensors. An interface
cable is provided with the module. The cable can be interchanged
with the Teledyne system for MOVs, which allows for easy field replacement.
Accuracy maintained —The Strain Gauge Interface
Module is designed to operate from an 11-15 VDC input providing
accurate readings over the full range of battery and AC operation
of the FlowScanner™ 6000.
Low-noise, high accuracy circuitry — Thanks
to its modular circuitry and the clean power provided by the FlowScanner
6000, strain signals from the Strain Gauge Interface Module are
exceptionally clean and usually do not require filtering. You can
be confident of the full rated accuracy of the strain gauge sensors:
each Strain Gauge Interface Module is tested to confirm accuracy
of at least 0.05% FS.
Full software support — The FlowScanner 6.1
software fully supports the use of the Strain Gauge Interface Module
with QSS sensors. Using stem material properties, the software allows
you to read forces directly, as well as graph and analyze for forces,
such as friction and seat load for sliding stem valves and operating
torque for rotary valves. The software also gives you automated
calculation and re-test capabilities.
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