HollySys AF-EMF8W Electromagnetic Flowmeter for Low Flow Measurement is a high-performance electromagnetic flowmeter specially developed for measuring small pipe diameters and low flow velocity media based on many years of experience in electromagnetic flowmeter applications. It provides the possibility of measuring microflows as low as 1L/h.
Product Features
· Measurable flow rates as low as 1L/h
· No need to reduce diameter, low lower limit of measurement
· Response speed as low as ≤ 1.0s
· Can be used without straight pipe sections
· Precise dripping, saving costs
Application Scenarios
Precise dripping process, such as pharmaceuticals, additives, etc.
Technical Parameters
Converter
| Accuracy |
0.3% (100 L/h < F < 1000 L/h) |
| 0.1% F ± 0.2 L/h (F < 100 L/h) |
| Power supply |
220 V AC/24 V DC |
| Output signal |
4 to 20 mA/passive pulse |
| Communication |
MODBUS/HART |
| Protection class |
IP65/IP67 |
Sensor
| Diameter |
DN10 to DN25 |
| Protection class |
IP65/IP67/IP68 |
| Flange pressure |
PN40 |
| Medium temperature |
AT to 110ºC (AT refer to ambient temperature) |
| Electrode material |
316L/Hc/Ti/Ta/Pt |
| Lining material |
FEP |
| Connection |
Flange/wafer/threaded/clamp |
| Structure |
Integrated type/split type |
| Grounding element |
Grounding electrode/grounding ring |
Working Principle
When the conductive liquid is cutting the magnetic lines in the magnetic field, the ends of conductor will induce electromotive force(E), which is vertical to direction of movement and magnetic field. The electromotive force and the velocity of conductive liquid(V) are in a direct ratio, that is E=BLV (B: magnetic induction strength of the magnetic field; L: conductor length; V: velocity of cutting the magnetic lines).
After the converter has the power, the excitation current drive coils to form the magnetic field in the measuring tube, and when the media flows along the measuring tube and cut the magnetic lines, the induced electromotive force is transmitted to the converter through the two electrodes on the pipe wall. After signal is processed and computed by the converter, and the measured flow
value is converted.
The display shows the measured flow data, and output the data by the way of 4 to 20mA, pulse or RS485.
Company Profile
Audited Supplier 
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