Continuous material flow detection (Flow / NoFlow)


Microwave sensor for contactless monitoring of material flow and detection of material clogging

The system operates with no contact in a process in which the material movement is detected by using the Doppler effect.

The FlowJam is a process-secure device, since the microwave technology used can penetrate material coating on the sensor and reliably detect the material movement behind it. If container walls, housings or pipelines are not metal, it is possible to measure from the outside.

  • Absolutely insensitive against material deposits
  • For any line diameter
  • With adapter, usable up to 220 °C and 20 bar
  • Compact (no separate electronics)
  • With ceramic mounting, usable up to 1,000 °C
  • Signalling through relay switching
  • Different sensitivity levels
  • Detection through all non-conductive walls
  • Can also be supplied with short housing and separate electronics
  • Detection of material clogging and material standstill
  • Steel
  • Food
  • Biomass
  • Cement
  • Chemistry
  • Coal plant
  • Coating
  • Incineration
  • Minerals
  • Wood
  • Lime plant
  • Energy
  • Gypsum
  • Power plant
  • Foundry

Application examples:

[everest_gallery alias=”FlowJam-applications”]
Technical Specifications
Material to detect Dust, powders or granulates
Working principle Microwave
Process pressure Max. 20 bar
Process temperature Up to +1000°C
Mounting 1 1/2 ” threat connection
Type of Conveying All
Flow rates No limit
Pipe diameter/detection range Up to 1200 mm
ATEX rating Category 3
Output Relay
  • For any line diameter
  • With adapter usable up to 220 °C and 20 bar
  • With ceramic mounting usable up to 1,000 °C
  • Operates with no contact, using microwaves in a process in which the material movement is detected by using the Doppler effect
  • Can also be used under difficult conditions such as high operating temperatures and pressures with the help of a process adapter
Technical Data
Housing material Stainless steel 1.4571
Protective system IP 65
Process temperature -20…+80 °C
-20…+220 °C (with process adapter)
Max. 1000 °C (with ceramic flange)
Ambient temperature -20…+60 °C
Working pressure Max. 1 bar
Max. 20 bar (with process adapter)
Power supply 24 V DC/AC ± 10 %
Relay contact Max. rated load: 250 V AC
Max. peak current:6 A
Max. rated load 230 V AC: 250 VA
Max. breaking capacity DC1: 3/110/220 V:
3/0.35/0.2 A
Min. switching load: 500 mW (10 V/5 mA)
Response time 250 ms …15 s (continuously adjustable)
Measuring frequency 24.125 GHz; ± 100 MHz
Transmitting power Max. 5 mW
Weight 1.0 kg
Dimensions Housing: length of 216 mm /
diameter of 52 mm
Thread: length of 30 mm /
diameter of G 1½”
Technical Data
Pressure adapter Temperature adapter Food adapter High temperature adapter
Material Stainless steel 1.4571,
POM diaphragm
Stainless steel 1.4571,
Tecapeek diaphragm
Stainless steel 1.4571,
Tecapeek GF30 diaphragm
Ceramic diaphragm
Temperature -20…+80 °C Max. +220 °C Max. +220 °C Max. 1000 °C
Pressure Max. 20 bar Max. 20 bar Max. 20 bar Max. 40 bar
Thread G 1½ inch on both sides G 1½ inch on both sides G 1½ inch on both sides G 1½ inch on both sides
Wrench width 55 mm 55 mm 55 mm 17 mm
  • ATEX Zone 1/3 D by using a process adapter

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