Flow measurement for dense-phase conveying


Continuous solids mass flow measurement in dense-stream conveying and high levels of throughput

Designed to measure solid flows during pneumatic dense phase transport.
The sensor measures density and speed.

  • no wear thanks to the ceramic inner pipe
Also available as a high pressure version, up to 110 bar.
  • Reliable flow metering in pneumatic dense-stream
  • Unlimited throughput volumes can be measured
  • Optionally pressure-resistant up to 25 bar
  • Installation creates no obstacle in the profile, hence no dead spots in which residue can form
  • Measurement independent of the flow speed of the material
  • Simple retrofitting
  • Maintenance-free
  • Contactless measuring procedure (no mechanics)
  • Materials: Powder or granules in pneumatic dense-stream transport in steel industry
Technical Specifications
Material to measure Dust and powders
Working principle Electromagnetic
Process pressure 25 bar, optional up to 110 bar
Process temperature Up to +120°C
Mounting Flange build-in
Type of Conveying Pneumatic densphase
Flow rates No limit
Pipe diameter Max. DN 150mm
ATEX rating Category 3, Cat. 1 applied
Output 4…20mA, Modbus, Profibus
Sensor Technical Data
Housing Steel St 52, powder-coated (optional Stainless steel 1.4571 DN 10…125 mm (bigger diameters on demand) Flange EN 1092-1
Inner pipe Ceramic
Protection category IP65
Ambient temperature
Mediums temperature
Sensor electronic: 0 … +60 °C
Sensor pipe: 0 …+80 °C
(higher temperatures as option)
Working pressure Max. 25 bar, optional 64 bar
Working frequency 88 kHz
Weight Depending on the nominal diameter
Velocity range 1…10 m/s
Dimension Ø DN + 150 mm, L 500 mm
Accuracy ± 2…5 %
in calibrated range
Transmitter Technical Data
Transmitter (DIN Rail) Transmitter (field housing)
Power supply 24 V DC ±10 % 110 / 230 V AC 50 Hz
(optional 24 V DC)
Power consumption 20 W / 24 VA
Protection type IP 40 to EN 60 529 IP 65 to EN 60 529/10.91
Ambient operating temperature -10 … +45 °C
Dimensions (W x H x D) 23 x 90 x 118 mm 258 x 237 x 174 mm
Weight Approx. 172 g Approx. 2.5 kg
Connection terminals cable
0.2-2.5 mm2 [AWG 24-14]
Current output 1 x 4 … 20 mA (0 … 20 mA),
load < 500 Ω
3 x 4 … 20 mA (0 … 20 mA),
load < 500 Ω
Interface RS 485 (ModBus RTU) / USB
Pulse output Open collector – max. 30 V, 20 mA
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)
Data backup Flash memory

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