Material flow monitor with blockage detection

FlowJam Plus

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

The FlowJam Plus is a logical development of the established FlowJam sensor which has proved its worth in thousands of applications:

  • rapid detection of material movement (Flow/NoFlow)
  • additional function “Detection of blockage” or “Material flow interruption”
  • Operates without contact using microwaves
  • Particularly reliable device since microwaves can pass through material accumulations
  • Measurement can be taken from outside all non-metallic tank walls, housings, hose lines or pipelines
  • Can be used even in difficult conditions, in other words high operating temperatures and pressures and in version for Atex zones (with the help of a processadapter)
    • Transfer point

Chips of wood are transported by two screw conveyors in a biomass plant.
At the transfer point between the screw conveyors, the FlowJam Plus monitors the flow of material.
In the case of a material flow interruption, it is now possible to detect quickly whether there is a problem because the lower screw no longer removes any material or the feed screw no longer supplies material.

Material infeed to a rotary feeder

In a lime plant, lime is conveyed into the inlet of a rotary feeder via a vertical downpipe. At this point, it should be ensured that there is always a sufficient material flow. When the material column reaches the sensor position in the fall line, the FlowJam Plus signals exactly this state. With this information, the material feed can be controlled better.

Technical Specifications
Material to detect Dust, powders or granulates
Working principle Microwave
Process pressure Max. 20 bar
Process temperature Up to +220°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, 4…20mA Trend
  • For freefall pipeline or a pneumatic transport system
  • Operates without contact using microwaves
  • Measurement can be taken from outside all non-metallic tank walls, housings, hose lines or pipelines
  • Can be used even in difficult conditions, in other words high operating temperatures and pressures and in version for Atex zones (with the help of a processadapter)
Sensor 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)
Operating frequency 24.125 GHz; ± 100 MHz
Transmission power Max. 5 mW
Weight Approx. 560 g
Dimensions Housing: Length 103 mm /
Diameter 52 mm
Thread: Length 30 mm /
Diameter G 1½”
Transmitter Technical Data
Power supply 24 V DC ± 10 %
Power consumption Approx.. 3.5 W
Ambient temperature -20…+60 °C
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)
Communication USB
Weight Approx. 172 g
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/td>
Steel
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
Installation
The FlowJam Plus sensor is installed on the line using a G 1½-inch threaded port.
flowjam material flow detection process solids
System
A complete measuring point consists of the following components:

  • FlowJamPlus sensor
  • DIN rail connector
flowjam plus material flow detection system process powders solids

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