The microwave barrier is a contactless measuring procedure.
It can be installed in containers, pipelines, shafts or free-fall sections. The range, depending on the model, is either 0 ... 4 m or 0 ... 18 m. Larger ranges can also be realised. If container walls, housings or pipelines are not metal, it is possible to measure from the outside. This even makes it possible to completely uncouple the measurement from the process through suitable windows made of non-metallic materials. This is especially interesting in the use of aggressive, abrasive or coarse materials or in cases of extreme pressures and temperatures. The ProGap 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.
Microwave barrier for contactless detection of dry bulk solids in containers, in pipes or in shafts
Simple and uncomplicated retrofitting
Reliable fill level and limit level detection
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 18 m (larger profiles on request)
Compact device - no separate electronics
Signalling through relay switching
Can also be supplied in short housing with separate electronics
| Sensor |
Material |
Housing: Stainless steel 1.4571
Sensor-isolation: POM
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| |
Protection system |
IP 65; DustEx (optional) |
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Working temperature |
- 20 ... + 80 °C
- 20 ... + 220 °C (with process-adapter)
Max. 1000 °C (with ceramic-flange) |
| |
Ambient temperature |
- 20 ... + 60 °C |
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Working pressure |
Max. 1 bar
Max. 20 bar (with process-adapter)
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| |
Detection range |
0 ... 4 m
0 ... 18 m
> 18 m (on demand) |
| |
Power supply |
24 V DC (-10/+15 %)
24 V AC (-10/+15 %)
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| |
Power consumption |
Approx. 1.8 VA |
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Current consumption |
Max. 100 mA |
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Relay output (max.)
- voltage
- current
- capacity
|
120 V AC/DC
1.25 A
150 VA, 50 W |
| |
Response time |
0.25 s ... 5 s (continuously adjustable) |
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Measuring frequency |
K-BAND 24.125 GHz (± 100 MHz) |
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Transmitting power |
Max. 5 mW |
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Weight |
Transmitter: 1.1 kg
Receiver: 1.1 kg |
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