AM-UST-Mini Ultrasonic Level Transducer

AM-UST-Mini Ultrasonic Level Transducer

The AM-UST-Mini Ultrasonic Level Transducer is arguably the most compact, most rugged and most cost-effective level transducers on the market. It is perfect for level measurement less than 13 feet. When connected with the 2300 Controller it is a complete process automation system for level control.

Inside the Mini is a full feature ultrasonic transducer that outputs directly either a 4-20 mA analog signal or two Modbus over RS485 digital signals. The unit is powered by a 15 -24 VDC power supply.
With an RS 485 connection to any Windows computer the user can customize both the distance range, offset and span. The software (included) also allows one to adjust the Modbus signal for sampling rate, signal averaging, loss of echo time-out, set-point hysteresis and even view the signal waveform for diagnostic purposes. The multi-drop communication network allows up to 32 sensors to be connected in parallel.

We call this the “mini” but its durability is anything but. It satisfies NEMA 4X and IP67 ratings and operates from -20 0C to 65 0C—with built-in temperature compensation. Let’s not forget protection of over-voltage, short-circuits and reverse polarity.


  • Non-contact ultrasonic level measurement

  • Narrow 8 degree beam angle

  • Outputs 0-20 mA and RS-485.

  • Plug-and-play setup. No calibration.

  • Intuitive software included.

  • Software control of analog range, span and offset

  • Software for digital sampling rate, signal averaging, loss of echo time-out and set-point hysteresis.

  • Display of waveform to diagnose signals from difficult applications.

  • Up to 32 sensors can be connected in parallel.

  • 12-24 VDC power supply

  • 1” MNPT fitting and L mounting bracket

  • NEMA 4X / IP 67

  • Combine with 2300 Controller for complete automation.


  • Liquid level control

  • Viscous or corrosive liquids

  • Mechanical positioning

  • Automatic filling operations

  • Paper/plastic film monitoring

  • Roll diameter measurement

AM-UST-mini Datasheet



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