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General Information; Sitrans As 100 Sensor; Features - Siemens AS 100 Instruction Manual

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General Information

SITRANS AS 100 Sensor

SITRANS AS 100 is an acoustic sensor for flow detection. It monitors high frequency
acoustic emissions (sound waves) generated by:
the friction and impact of solids flow in pipes, chutes, and conveyors
cavitation occurring in pumps, pipes, and valves
turbulence of gases or liquids leaking through valves and flanges
friction and jarring of mechanical parts
Acoustic emissions travel readily through solid materials such as metal, but are strongly
attenuated when traveling through air. As such, the Sensor is immune to airborne
interferences and provides a non-invasive method of monitoring process activities.
The sensor can be configured electrically during wiring to operate in either low or high
sensitivity range mode. The high sensitivity range applies where highest signal levels
vary up to 40 dB. The low sensitivity range applies where highest signal levels vary
between 28 and 68 dB.
SITRANS AS 100 Sensor provides an analog output for use with the Sitrans Control Unit.
The Sensor may be operated independently from the Control Unit by providing an external
supply. The output is fed into a control panel, chart recorder, data logger, or
programmable logic controller with a suitable input.
SITRANS AS 100 Sensor is primarily used for solids flow detection. However, this device
can be used in pump cavitation and fluid leak detection, provided sufficient noise levels
are generated.


screw in, bolt on, weld, or bond in place
analog output
high and low sensitivity range of operation
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