Microwave sensor for contactless material flow measurements in air slides.
Fast recognition of Flow/No Flow conditions
Easy to install
No installations into the process
4 . . . 20 mA trend signal for the flow rate
Easy retrofitting

Cement
Asphalt

Minerals
Steel

Application examples:

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Cement flow rate after cyclone separator

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Flow monitoring of cement in air slides

Monitors the material flow in the slide without any contact

Easy and retrofit installation on the air slide

4 . . . 20 mA-trendsignal for the flow rate
Contact-free

Sensor Technical Data
Housing material	Stainless steel 1.4571
Protection Type	IP 65
Process temperature	-20…+80 °C -20…+220 °C (with process adapter)
Ambient temperature	-20…+60 °C
Working pressure	Max. 1 bar
Power supply	18…24 V DC / AC powered by transmitter
Measuring frequency	24.125 GHz; ± 100 MHz
Transmitting power	Max. 5 mW
Weight	1.0 kg
Dimensions	Enclosure: length of 216 mm / diameter of 52 mm Thread: length of 30 mm / diameter of G 1½”

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
DIN rail fastening	DIN 60715 TH35	/
Cable screw connectors	/	3 x M20 (4.5 – 13 mm Ø)
Connection terminals cable cross-section	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

Once the sensor has been installed and electronically connected, it is possible to measure the filling height via the service opening of the mounting plate, for example with a dip stick.
This process should be performed with an ongoing slide, because the sensor only measures the level of the surface on a moving flow.
The measured filling height serves as a value of calibration for the sensor.
If the density of fluidization is supposed to be used for a calculation of the flow signal, the filling height at a turned off conveying has to be known.
After the input of the parameter, the sensor gives out a trend signal for the flow rate.
Flow-/ No Flow conditions are also reliable identified.