Point level monitoring

ProGap 2.0

Microwawe barrier for contactless detection of dry bulk solids in containers, pipes or chutes. Reliable fill level and limit detection

  • Simple and uncomplicated retrofitting
  • Reliable fill level and limit level detection
  • Signalling through relay switching
  • Detection through all non-conductive walls
  • With process adapter up to 220 °C and 20 bar pressure possible
  • With ceramic mounting up to 1,000 °C possible
  • Absolutely insensitive to material cakings
  • Can be used up to a profile of 25 m (larger profiles on request)
  • Compact device – no separate electronics
  • Can also be supplied in short housing with separate electronics
  • Limestone
  • Tiling
  • Waste incineration
  • Cement
  • Building materials

Application examples:

Technical Specifications
Material to measure Dust, powders or granulates
Working principle Microwave
Silo diamter/ detection range 25m
Process pressure Max. 20 bar
Process temperature Up to 1000°C
Mounting 1 1/2 ” threat connection
Place to measure Silos, containers, chutes, pipelines, transition points
ATEX rating Category 3
Output Relay
  • The microwave barrier is a contactless measuring procedure
  • Can be installed in containers, pipelines, shafts or free-fall sections
  • Range is 0.1 … 25 m
  • If container walls, housings or pipelines are not metal, it is possible to measure from the outside
  • Can also be used under difficult conditions such as high operating temperatures and pressures with the help of a process-adapter
  • The use of microwaves also ensures a high level of insensitivity to any caking on the sensor window
Sensor Technical Data
Material Housing: Stainless steel 1.4571
Sensor-Isolation: POM
Protective system IP 65
Using in Ex-zones Outside pipe: Cat. 3 GD
Inside pipe: Cat. 1/3 G and Cat. 1/3 D
(only with process adapter)
ProGap 2.0-BS
Housing: L 103 mm / Ø 52 mm
Thread: L 30 mm / Ø G1½
ProGap 2.0-BS Ex
ProGap 2.0-BS Ex
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)
Detection range: Leveln 0.1 … 25 m (> 25 m on request)
Detection range: Flow 0.1 … 12,5 m (> 12,5 m on request)
Power supply 24 V DC powered by DIN Rail electronic
Power consumption approx. 1.8 VA
Current consumption max. 100 mA
Measuring frequency K-Band 24.125 GHz (± 100 MHz)
Transmitting powe max. 5 mW
Cable gland M16 (Ø 5-10 mm)
Weight ProGap 2.0-BS approx. 560 g
Weight ProGap 2.0-BS Ex Transmitter: 1.1 kg
Receiver: 1.1 kg
DIN Rail electronic Technical Data
Power supply 24 V DC ± 10 %
Power consumption 3.5 W
Current consumption 120 mA at 24 V
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)
Fall-delay time 0.25 …5 s (continuously adjustable)
Weight approx. 172 g
Protective system IP 40
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 sensor sides
Wrench width 55 mm 55 mm 55 mm 17 mm
  • ATEX Zone 1/3 D by using a process adapter

Related products

  • ProGap 2.0-BS

    Microwave barrier for contactless detection of dry bulk solids with filling-signal-suppression

  • SolidFlow 2.0

    Continuous mass flow measurement of all types of dust, powder and granules in free fall and pneumatic conveying

  • FlowJam Plus

    Material flow monitoring with Flow/No Flow information plus additional "Detection of blockage" or "Material flow interruption" function (Jam/NoJam)

  • Nico 15/30

    Radar sensor for measuring the level in silos and containers. Available for silos up to 15 m or 30 high (depending on version). Can be used for a wide variety of materials, regardless of the size or composition of the material.


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