Yichuan Instrument Electromagnetic Flow Meter Manufacturer

description
Electromagnetic flow meters are suitable for measuring the flow of all electrically conductive liquids, as well as mud, paste, and slurry. The premise is that the measured medium must have at least some minimum conductivity. Temperature, pressure, viscosity, and density have no effect on the measurement results.
As long as appropriate pipeline lining and electrode materials are selected, they can also be used to measure corrosive media. Solid particles in the medium will not affect the measurement results.
The flow sensor and intelligent converter are integrated or separated to form a complete flow meter.

application
Electromagnetic flow meters are mainly used in the following fields:
1. Clear water and sewage
2. Steam, electricity production and distribution
3. Chemical and industrial pharmaceuticals
4. Food industry

feature
The measurement of flow rate is carried out using electromagnetic principles in a closed water circuit, which has higher accuracy compared to ultrasonic methods. The importance is as follows:
1. No moving parts, no wear and tear
2. The measurement range of the process is 1:100
3. No clarification section or flow enhancement device
4. Applied to measure the flow velocity of various conductive liquids
5. The measurement results are not affected by physical properties such as temperature, pressure, viscosity, and density
6. Strong corrosion resistance and wear resistance
7. Measurable forward/reverse flow rate
8. Large LCD screen, user-friendly interface, easy to use
9. Persistent EEPROM, used to store configuration parameters and measurement data in case of power failure
10. Support MODBUS/HART communication protocol
11. Wide working voltage range


working principle
The flow measurement principle of electromagnetic flowmeter is based on Faraday's law of electromagnetic induction:
When a conductive liquid flows through a measuring tube surrounded by a magnetic field, an induced electromotive force proportional to the average flow velocity is generated in the direction perpendicular to both the flow direction and the magnetic field. A flowmeter consists of two parts: a sensor and a converter. The converter transmits excitation current to the coil inside the sensor, thereby generating a magnetic field inside the sensor measuring tube. Then, the conductive liquid flowing through the measuring tube generates induced electromotive force by cutting the magnetic field lines. The electrodes fixed on both sides of the measuring tube wall receive and transmit the induced electromotive force to the converter through the signal cable. The converter filters, amplifies, calculates, and transforms the signal to obtain the flow rate value of the measured medium. Finally, the converter outputs a standard current signal or frequency signal proportional to the measured flow rate.

Technical Specifications
Display up to 8-bit LCD display, real-time clock displaying various flow data, optional M3 or L display units
Structural embedded type design, integrated or split type
Measurement of medium liquid or solid-liquid two-phase fluid, conductivity>0.5us/cm2
Measurement range 0.05m/s~12m/s
The measurement accuracy ranges from 0.1m/s to 10m/s, with an accuracy of 0.5%
Caliber 6mm~2000m
Nominal pressure PN6, PN10, PN16, PN25, PN40, PN63, PN100, PN160, PN250, PN420, etc. are optional
Output signal 4-20mA or frequency
Communication RS485, supports MODBUS communication protocol (not standard), supports HART communication protocol (optional)
The connection diameter DN6~DN2000 is the flange standard
The connection standard is applicable to various pipeline flange standards (e.g. BS EN1092-1)
The precision requirements of the product standard comply with EN1434-1:2003 standard
CE certification accuracy LVD 2006/95/EC, and EMC 2004/108/EC
EN 61326-1:2006 radiation standard (declared to comply with BS EN50081-1)
EN 61326-1:2006 anti-interference standard (declared to comply with BS EN50082-1)
EN61010-1：2001， Safety - Part: General Requirements
The protection level is IP65 when integrated, and IP67 or IP68 when separated (optional)
Power supply AC86~220V or DC24V (optional)
Environmental temperature: 5-55 degrees Celsius
Environmental humidity<85% r.h (non condensing)