Siemens SITRANS AS100 Acoustic Sensor for Solids Flow Detection

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SITRANS AS100 is an acoustic sensor used for solids flow applications. Available in standard (-4° to 176° F) or extended (-40° to 257° F) temperature range models. IP68 stainless steel enclosure with PVC-jacketed cable. Analog output to connect with SITRANS CU02 control unit.

Territory Restriction: Due to our territory agreement with Siemens, Lesman is the authorized Siemens sales representative in Illinois, Indiana, Wisconsin, Eastern Missouri, Michigan's Upper Peninsula, and the Paducah, KY area. If you are outside that area, you can find your local sales office or get technical assistance by calling 800-365-8766 or 972-522-4500, or sending an email to

Siemens SITRANS AS100 acoustic sensor helps you take early preventive action to avoid costly damage. It detects changes in high-frequency sound waves from equipment and materials in motion, sensing and reacting instantly to changes in solids flow to warn of blockages, product absence, or equipment failure.

Operating with a SITRANS CU02 control unit, the system detects conditions of high flow, low flow or no flow. It can be added to a control loop via a 4 to 20 mA output. Two relays are fully programmable and independent of each other and can be used to operate an alarm or control device. With no moving parts and a type 304 or 303 stainless steel enclosure sealed against dust and moisture, this non-invasive unit requires little or no maintenance. With a dual operating range, the sensor offers an exceptionally wide range of application capabilities.

Common applications include pellets, powders and most bulk solids in pipes, chutes, vibratory feeders, pneumatic conveyors or aerated gravity flow systems. It can detect burst filter bags in dust collection systems, detect material being conveyed in pneumatic lines, or used to confirm routes in chute work.

  • Non-invasive
  • Screw in, bolt on, weld, or bond in place
  • Analog output
  • Available in standard (-4 to 176F) or extended (-40 to 257F) temperature ranges
  • IP68 waterproof stainless steel housing with 13.12 ft (4 meter) PVC-jacketed cable
  • CE, ATEX, FM, CSA approvals available
  • Replaces retired Milltronics Mass Dynamics Senaco acoustic sensor

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Siemens Advantage Plus

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Wetted Materials Stainless Steel

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