Mass flow measurement for dry bulk solids

MaxxFlow HTC

Contact-less and maintenance free measurement of high mass flow rates of dry bulk solids independent of pipe run

Electromagnetic flowmeter, designed to measure bulk material flows up to 300 t/h.
The meter has no mechanical parts in the flow, is 100 % dustproof and erosion free thanks to the ceramic inner pipe.

arbitrary mounting position (inclined/free fall)
low headroom required
easy to calibrate

Flow measurement from 10 t/h to 300 t/h

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Most non-metallic solids can be measured
Can be installed on round pipes or ducts
No real upper limit of mass flow

Maximum pressure 10 bar
Dust tight
No flow restrictions to the process flow (wear resistant ceramic liner)
The mass flow measurement is independent of flow characteristics

Maximum temperature, 12O °C
Can be installed at an angle
Small footprint, 220 mm (DN 100), 290 mm (DN 150), 310 mm (DN 200)
No moving parts, hence no maintenance

– For flow rates up to 300 t/h
– Low installation height
– Suitable in situations in which it was previously only possible to use complicated, inaccurate or expensive mechanical solutions (impact plates, measuring chutes)

Installation independently of direction of line (vertical, inclined), but always after mechanical conveyor elements, in various industries:

Cement
Chemistry
Energy

Coal plant
Food
Minerals

Lime plant
Gypsum

MAIN APPLICATIONS

Mass-flow measurement of raw meal
Mass-flow measurement of potato starch in free fall prefiding chain conveyors

Mass-flow measurement of salt in free fall pre feeding chain conveyor

Mass-flow measurement of wood pellets in free fall
Flow mettering of grains

Technical Specifications
Material to measure	Dust, powders or granulates max grain size 30 mm
Working principle	Electromagnetic
Process pressure	1 bar
Process temperature	Up to +120°C
Mounting	Flange build-in
Type of Conveying	Gravity, also declining pipes
Flow rates	Up to 300 t/h
Pipe diameter	Up to 200 mm feeder outlet
Output	4…20mA, Modbus, Profibus

Use:

The MaxxFlow HTC is specially developed for the flow measurement of dry bulk solids during high-volume throughput. Due to its completely open profile and its low installation height, the MaxxFlow HTC is especially suitable in situation in which it was previously only possible to use complicated or expensive mechanical solutions, e. g. impact plates or measuring chutes.

The installation of the MaxxFlow HTC takes place independently of the direction of the line (vertical/inclined), but always after mechanical conveyor elements,
e. g. rotary feeder, screw conveyors, air slides or chain conveyors.

Sensor Technical Data
Housing	Steel St 52, powder-coated (optional stainless steel 1.4571) NW 80/100/150/200 mm, Flange according EN 1092-1 / PN10 DN 80: variable
Inner Type	Al2 O3-Ceramic
Operating temperature	Sensor pipe: – 20 … + 120 °C Sensor electronic: 0 … + 60 °C
Max. working pressure	1 bar
Working frequency	88 kHz
Transmitting power	Max. 2 mW
Weight	Depend on diameter
Accuracy	± 1 … 3 % (based on end of measuring range and calibrated material)
System accuracy	± 0.04 %

Transmitter Technical Data
	MSE 300-DR (DIN Rail)	MSE 300-FH (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 (Active)	3 x 4 … 20 mA (0 … 20 mA), load < 500 Ω (Active)
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
	DIN rail fastening DIN 60715 TH35	Cable screw connectors 3 x M20 (4,5 – 13 mm Ø)

A complete measuring station consists of these components:

• Measuring feeder for installation in the conveyor line
• Transmitter

The measuring feeder is available in sizes DN 100, DN 150 mm and DN 200 mm.
On request the components inlet path (between conveyor element and sensor) and gate valve (for calibration) can also be configured and supplied.

The transmitter is connected to the sensor using 4-wired, shielded cable.
The maximum distance between measuring feeder and transmitter is 300 m.