LDB series of electromagnetic flowmeter (economic) 
 First, an overview 
 LDB series of electromagnetic flowmeter has its own unique advantages and is widely used in chemical fiber, food, paper, sugar, mining and metallurgy, water supply and drainage, environmental protection, steel, petroleum, pharmaceutical and other industrial fields, used to measure each kinds of acid, alkali, salt solution, slurry, pulp, pulp, coal water slurry, corn syrup, fiber pulp, sewage, cooling water, saline, hydrogen peroxide, beer, wort, all kinds of drinks, black liquor and other conductive fluid medium volume traffic. 
 Second, the characteristics 
 Square wave constant current excitation of the low-frequency three values, free from the power frequency and field a variety of spurious interference effects, the work is very stable and reliable. 
 ● non-uniform magnetic field of new technologies and special magnetic dance structure, magnetic stability, and greatly reduced size, reduced weight, the flowmeter with a small lightweight characteristics. 
 ● use of specialized electronic circuits, with air traffic control to automatically re-zero function. 
 ● in the field according to the actual needs of users online modification range. 
 ● No moving parts, and the unimpeded flow of parts. Almost no additional pressure loss in the measurement. 
 ● measurement results with the velocity distribution, independent of the physical parameters of the fluid pressure, temperature, density, viscosity, etc.. 
 ● easy to use, just plug in the power after installation, without any other operation, you can output standard signal, and easy for non-professionals. 
 Third, the principle 
 LDB Series of electromagnetic flow meter is based on Faraday's law of electromagnetic induction. Both when the conductive liquid flows through the electromagnetic flowmeter, the conductor will generate induced electromotive force induced electromotive force and the conductive liquid flow rate, magnetic field intensity is proportional to the conductor width (meter diameter). 
 The induced electromotive force detected by a pair of electrodes on the flowmeter wall. Can get the traffic through the operation 

 E = KBDV 

 E: the induced electromotive force 

 K: constant of proportionality (the magnetic field distribution and the axial length of the coefficient) 

 B: magnetic induction 

 D: measurement of tube diameter 

 V: measuring the average velocity within the pipe section 

 Fourth, the technical parameters 

 ? the implementation of standards: 

 JB/T9248-2000 electromagnetic flowmeter 

 Nominal diameter range DN: (mm) 

 PTFE lining: 10,15,20,25,32,40,50,65,80,100,125,150,200 250,300,350 ...... 1200 

 Rubber lining: 10,15,20,25,32,40,50,65,80,100,125,150,200,250,300,350 ...... 1600 

 Note: Special specifications can be customized 

 · Accuracy class: 0.5, 1.0 

 · Operating Temperature: Neoprene lining: -20 to +60 ° C; 

 Polyurethane lining: -20 ~ +90 ℃ 

 PTFE Lining: -30 to +150 ° C 

 Working pressure: DN10-DN65: 2.5Mpa DN80-DN150: 1.6Mpa of DN200-DN600: 1.0Mpa 

 · Flow Measurement: Flow measurement range corresponds to the flow rate range is 0.5 ~ 10m / s 

 Conductivity: conductivity greater than 20μs/cm 

 · Output signals and load resistance: 0 ~ 10mADC, 0 to 1000Ω; 0 ~~ 1000Hz; not less than 10KΩ 

 0/4 ~ 20mADC, 0 ~ 500Ω; 1 ~ 5V, 0 ~ 5V, not less than 10KΩ 

 · Electrode material: 316 stainless steel 

 · Protection class: IP65 

 Power supply: 220VAC ± 10%, 50Hz ± 5% 24VDC ± 10% 

 Straight pipe length: upstream ≥ 5DN downstream ≥ 3DN 

 Connection between the way: the flow meter and piping connected with flange, flange connection size shall comply with the provisions of GB9119-88 

 Ambient temperature: -25 ° C to +85 ° C 

 Relative humidity: 5% ~ 95% 

 The total power consumption: less than 25W 

 Our company mainly production and sales of industrial automation and instrumentation, the main products: thermal gas mass flowmeters, vortex flowmeters, electromagnetic flowmeter, ultrasonic flowmeter, turbine flowmeter, pressure transmitter, temperature transmitters, ultrasonic level meter, the water level pass to show the instrument, the LCD flow totalizer and other products