Powder flow monitoring in flexible pipelines

FlowJam T

FlowJam T is a sensor that has been specially developed for monitoring the flow of solids that are conveyed through thin pipelines.

The sensor can be used for tubes made of electrically non-conductive material, such as plastic or rubber, with outside diameters between 4 and 25 mm.
The sensor is mounted around the tube for measurement.

Material flow monitoring on flexible hose lines for small quantities

  • triboelectric measurement
  • free cross section
  • Plug & Play
  • trend monitoring for throughput
  • suitable for pipelines with outer diameter: 4 … 25 mm
  • compact device
  • easy retrofitting
  • Powder coating
  • Water cutting
  • Sand blasting
  • 3D printing
Technical Specifications
Material to detect Dust, powders or granulates
Working principle Triboelectric
Process pressure Independent
Process temperature -20 … +60 °C
Mounting Clamp-on
Type of Conveying In flexible hoses
Flow rates No limit
Pipe diameter/detection range 4 to 25 mm
ATEX rating No
Output Relay, 4…20mA Trend
Sensor Technical Data
Power supply 24 V DC
Connection M12-Plug
Housing material Aluminium
Protection type IP 64
Process temperature -20 … +60 °C
Ambient temperature -20 … +60 °C
Analogue output 1 x 4 … 20 mA (0 … 20 mA), load < 500 Ω (Active)
Relay output NO (make contact); max. 250 V AC / 0.5 A; 30 V DC / 1 A
Possible outer diameter 4 to 25 mm
Dimensions Width: 62 mm, Depth: 62 mm,
Height: depend on outer diameter Ø
(with Ø 8 mm the height is 75 mm)
The FlowJam T detects all types of solid streams that move through the detection area. The detection is performed regardless of the direction of movement, by the triboelectric discharges of the particles.
The material movement in non-metallic pipelines is displayed at the analogue output as a trend and at the relay output as switching state.
Via the trend output can be displayed, for example, whether more or less material through the tube is conveyed. The material flow can also be observed for uniform distribution. By means of the relay contact an additional information about Flow/NoFlow can be output.


The FlowJam T is a compact device and is connected via an 8-pin plug. For parameterisation of the sensor, a Modbus-USB converter and software could be provide.

Cases Studies