Posted in | Ultrasonic Sensor

FlatPack® 160 kHz for Level Monitoring in Pipes, Culverts and Drains

The MassaSonic® FlatPack® Sensors are low profile designed ultrasonic transmitter modules. They are optimized to offer continuous non-contact distance measurement of pastes, fluids, or uneven solid bulk materials in constrained working zones for application ranges from 1″ (25 mm) to 13′ (4 m). Two versions are available, and featured here is the short range model.

Adding sophisticated dual-transducer ultrasonic technology and processing algorithms, all FlatPack® Series Sensors offer precision measurement for factory automation, warehouse materials control, pipe and conveyor belt blockage or tank level applications. These Sensors perform extremely well in uneven surface or turbulent applications.

FlatPack® Sensors are also perfect to record in-pipe flow levels of renewable energy systems or wastewater pipes. The unique dual transducer design has a 15° system beam angle, so it's not likely that the maximum range capabilities will be greatly affected by solid materials with non-uniform surfaces, as occurs with single transducer sensors with narrow beam angles.

The FlatPack® Sensors are IP68 rated, RoHs and CE compliant. These field proven designs come in a PVC housing ideal for use in all-weather resistant moderate chemical environments from -40°C to 70°C. An incorporated mounting plate with pre-formed holes is provided for easy installation.

All models include continous temperature compensation to guarantee measurement accuracy and precise speed of sound calibration. Other user-friendly features include diagnostic and monitoring outputs, protection from over voltage, short circuits, and reverse polarity.

Specifications of FlatPack® 160 kHz (Short Range) Sensors

The following table lists the key specifications of FlatPack 160 kHz Sensors:

Model 160 kHz (Short Range) FlatPack
Minimum Detection Distance 1 inches
(25 mm)
Maximum Detection Distance 5 feet
(1.5 m)
0 to 10 V DC Analog Output Model Yes
0/4 to 20 mA DC Analog Output Model Yes
Housing Material PVC
Mount Integrated mounting plate with pre-formed holes
Operating Temperature Range -40°C to 70°C
Electronic Communication Using a Computer RS-485 data link allowing up to 32 sensors on a multi-drop communication network
Figure 1: Flatpack in Pipe Level

Key Features

The main features of the FlatPack® 160 kHz are as follows:

  • Works on uneven liquids or solids
  • Dual transducers and short dead band
  • Temperature compensated
  • Low cost of ownership (CoO)
  • Up to 32 sensors on RS-485 multi-drop network
  • Accurate in demanding environmental conditions
  • Several easy user programmable customizations
  • Rugged and tamperproof
  • IP68 enclosure rating


The main applications of the FlatPack® 160 kHz are listed below:

  • Position detection
  • Bulk material management
  • Liquid level control in turbulence
  • Uneven solids control
  • Conveyor belt, hopper and chute monitoring
  • Pipe and conduit blockage detection
  • Pipe level monitoring

Download the DataSheet Here

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