Electromagnetic Flow Meter for Conductive Liquid
Working Principle
Working principle of electromagnetic flow meter measurement is based on the Faraday law of electromagnetic induction. Measurements of the flow meter tube is lined with insulating material of a non-magnetic alloy spool. Two clicks along the diameter through-wall fixing on the measuring tube. The electrode head is flush with the lining inner surface. Field coil by waves when pulsed excitation by both parties, will be measured perpendicular
to the pipe axis direction produces a magnetic flux density of the magnetic field b. At this point, if you have
some electrical conductivity of fluid flows through the measuring tube, cut magnetic lines of induction electromotive force.
Features:
1.No moving and blocked flow parts in the pipeline, almost no additional pressure loss in the measurement.
2.Measurements results are independent of physical parameters, such as flow distribution, fluid pressure, temperature, density and viscosity.
3.On-site modification of the measuring range available.
4.LCD display, easy to use and simple to operate.
5.Using SMD devices and SMT technology.
6.Using 16-bit embedded processors with fast speed and high accuracy, enhancing the stability of measurement.
7.Anti-interference, reliability, measurement range up to 150:1.
8.Ultra low EMI switch, wide range of power supply voltage.
9.RS485, RS232, Hart and Modbus digital communication signal output.
10.Self-checking function.
Application:
Due to its unique advantages, it is widely used in the fields of petroleum, chemical industry, steel, light industry, sewage processing, environmental protection, water conservancy project and pharmacy to measure the volume flow of the conducted liquid mediums, such as alkali, salt solution and so on.
Technical parameters:
Nominal diameter DN(mm) | 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500, 600,800, 1200 Note: special specifications can be customized |
Measuring range ratio | 150:1 |
Accuracy | Pipe type: 0.5, 1.0 |
Measured medium temperature | Common rubber lining: -20~+60 ℃ High temperature rubber lining: -20~+90 ℃ PTFE lining: -30~+100 ℃ High temperature vinyl lining: -30~+180 ℃ |
Rated working pressure | Pipe type: DN10~DN65: ≤ 2.5MPa; DN80~DN150: ≤ 1.6MPa; DN200~DN1200: ≤ 1.0MPa Special type up to 10.0MPa |
Flow measuring range | flow measuring range corresponding to flow rate range is 0.3~15m/s |
Measured fluid conductivity | ≥5μs/cm (Most with water as the composition of the medium, its conductivity in the range 200~800 Mu s/cm, optional solenoid flow) |
Output | 4~20mADC (isolation), pulse frequency 0~1kHz, OCT photoelectric isolation, external power ≤ 35VDC, breakover, collector Max 25mA |
Electrode material | 316L, titanium(Ti), tantalum(Ta), Hastelloy(H), Platinum(Pt) or other special electrode materials |
Protection grade | Standard: IP65; Diving type:IP68 |
Working power supply | 85~265VAC 45~63HZ |
Straight pipe length | Pipe type: ≥ 5DN in the upper reaches, downstream :≥2DN |
Explosion-proof mark | ExdⅡCT6 |
environment temperature | -25 ℃ ~+60 ℃ |
