Flow Measurement at low solid/air ratios

PicoFlow

Perfectly adapted for control and regulation of reagent in flue gas treatment and transport lines with very low material concentration

Electrodynamic flow sensor for measurement of low flow rates.
For pipe diameters up to 1 m.
Ideally used in leanphase conveying.
In free fall conditions with at least 2 m/s drop speed.

suitable for very low concentrations
ceramic coating preventing sensor wear

Measurement of low flow rates

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Particularly good in pneumatic applications for material flow rates from a few g/h up to a few hundreds kg/h (depending on application)

Very reliable for free-fall applications with a drop speed of at least 2 m/s (approx. 25 cm drop height)

In cases where dust measuring instruments cannot cope and flow rate measuring instruments are overspecified

The PicoFlow is perfectly suited for industrial applications especially in power generation or cement plants where it can be used to regulate or control additional reagent in flue gas treatment: injection of activated carbon, minsorb, lignite coke…

Waste incineration
Steel
Chemistry
Energy
Cement
Pharma

Technical Specifications
Material to measure	Dust, powders or granulates max. grain size 10 mm
Working principle	Electrodynamic
Process pressure	max. 10 bar
Process temperature	+150°C
Mounting	Via process connection
Type of Conveying	Pneumatic leanphase, vertical freefall after feeder
Flow rates	Depending on application
Pipe diameter	Max. 1000 mm
ATEX rating	Category 1/2
Output	4…20mA, Modbus, Profibus

Pneumatic conveying and free fall
Absolute measurements in g/h or kg/h

Materials: all types of dust, powder and granules

Wear-resistent

Sensor Technical Data
Housing	Aluminium
Protection Type	IP 66; ATEX: Cat. 1/2 GD
Operation temperature	Process: -20 … +150 °C Ambient: -20 … + 60 °C
Max. working pressure	10 bar
Weight	1,5 kg
Sensor rod	Stainless steel, ceramic coated, max. 450 mm
Accuracy	± 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 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

The PicoFlow can be installed in metallic ducts and pipelines.

It should be installed as far as possible away from curves and other fittings such as valves and slides. The distance between the sensor rod and fittings in the duct should be at least three times the duct diameter in every flow direction.

Non-metallic ducts must be cased with a metal sleeve, a metal foil or a tight-mesh metal grille over a length of at least five times the duct diameter.
After deciding the installation location, drill a hole in the duct wall where the supplied weld-on socket can be welded perpendicular to the pipe. Then screw the sensor rod into the socket using the screw-in thread.