Velocity measurement for solids

SpeedFlow 2.0

Continous speed measurement for solids usable in free fall and pneumatics

Especially designed for continuous measurement of velocity of solids and particles such as granulates, powders and dusts, which are transported in free fall or in pneumatic transport. Uses triboelectric correlation technology.

Plug-in sensor for easy retrofit
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  • Continuous speed measurement of solids (powder, granules, dust ) in metal pipes
  • Measurement directly in the conveying stream / entrained flow
  • Measurement is completely independent of material
  • Simple retrofitting using a welding socket
  • Energy

Application examples:

Technical Specifications
Material to measure Dust, powders or granulates
Working principle Correlation
Process pressure Max. 1 bar
Process temperature Max. +80°C, optional +120°C
Mounting Via process connection
Type of Conveying Pneumatic leanphase
Velocity range 0,75…35 m/s
Pipe diameter No limit
ATEX rating None
Output 4…20mA, Modbus, Profibus
  • Materials: Granules, Powder and dust
  • In metal pipes
  • Can be used in free fall lines or in pneumatic conveyors
  • Range of application: starts with material speed as low as 0.75 m/s
Sensor Technical Data
Weld-on socket St52 or steel 1.4571
Rod Wolframcarbid
Housingn Steel 1.4571
Protection category IP 65 to EN 60529/10.91
Rod length 15 mm
Velocity range 0.75…35 m/s/td>
Temperature inside the pipe -20…+80 °C
(higher temperature on request)
Temperatur outside the pipe 0…+60 °C
Power supply 24 V DC
Weight Approx. 1.5 kg
Dimensions Ø 60, Ø 20, L 320 mm (incl. rod length)
Measuring accuracy ± 1 %
(in the calibrated measuring 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
For the assembly of the sensor, the installation location is specified in accordance with the conveyed inlet and outlet paths. The socket is welded on at the specified installation location and then a borehole of 20 mm is drilled through the socket and through the line. The sensor is then adjusted to the wall thickness, inserted and fixed with the help of the coupling nut. The distance between sensor and analysis unit can be a maximum of 300 m. speedflow velocity measurement process solids

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