WP-EMF-C/D gripping electromagnetic flow meter
 Product outline
 Product applicability
Electromagnetic flow meter is constitut by the primary and the converter two parts, based on faraday’s laws of electromagnetic induction carry on work, use to measure the electric conductivity liquid or two phase medium for which required electric conductivity generally must more than 5 μs/cm (original electric conductivity of the running water about is 100~500μs/cm ), can be used to metering various acid、alkali、brine solution、paper pulp、ore pulp medium etc., but can not include more ferromagnetic substance and considerable air bubbl in them.
Electromagnetic flow measurement for many industry department such as petroleum、chemical industry、metelargy、light and textile industry、papermaking、environment protection、food etc. and municipal management、water projects construction field etc.
  Working principle

The metering system of the electromagnetic flow meter primary is base on Faraday’s laws of electromagnetic induction, on the channel border which is vertical each other with metering tube axis and line of magnetic field mount one pair detecting electrode, when the conductive liquid move alon metering tube axis conductive liquid cutting the line of magnetic field induce the inductive E.M.F. This EMF detect out by two electrodes on the metering tube, numerical value size is:

E=KBVD

Here: E inductive EMF;
K instrument constant;
B magnetic induction
V average flow velocity in metering tube section;
D metering tube inner diameter;

When measure flow rate fluid flow through magnetic field which is vertical to flow direction, conductive liquid movement induce one EMF in direct proportion to average flow velocity, so that require measured flow liquid have higher than lowest limit conductivity. Its induction voltage signal is detected by two electrodes, and pass through a cable transmit to converter, after through signal treatment and correlative operation, take the integrating flow and the instantaneous delivery indicate on the display screen of the converter.
  Instrument characteristic
1.1 In metering tube have not flow resistance and movable component therefore can not cause extra energy loss also can not cause stop up, so that its energy saving effect is remarkable. Especial suit to measure liquid solid two phase flow such as sewage、slurry、ore pulp、water-coal pulp、paper pulp and so on.
1.2 Of contact with measured medium only have liner and electrode, as long as reasonably select liner and electrode material it can attain good non-corrodibility and wear ability, so that can measure various acid and alkali etc. chemical solution.
1.3 Installation demand is low. A straight upstream section only need 5D and downstream section is 2D (D is inner diameter of selected instrument).
1.4 Measurement accuracy non-subject the influence of fluid density、viscosity、temperature、pressure and conductivity variation, also can measure positive / negative two directional flow rate, thus is has provided the very good means for precise measurement of flow rate.
1.5 Instrument watt consumption is small, lower than 5VA.
1.6 Converter have good changeability, need not renew real flowing calibration can gain measurement accuracy. Because the electromagnetic flow meter have a serial strong point, so that it in various industry gain the more the wide application, become a first choice instrument of liquid flow measurement.
 Main technic parameter

Aperture   DN10~DN200
Electrode material   316、Hb、Hc、Ti、Ta、Pt
Inside lining material   PFA、F4
Medium    conductivity liquid (include solid liquid two phase body)
Measuring error   ±0.3%、?.5%、?%
Medium conductivity ?μs/cm (water ?20μs/cm)
Flow rate scope   0.5~10m/s
Medium temperature integrative  -10~+60? split -10~+150?br /> Rated pressure   1.6Mpa~4.0Mpa (divide according to aperture)
Protection grade   IP65,  IP67,  IP68 (split)
Output signal   4~20mA output, frequency/pulse output
Communication   RS485, RS232
Application    Acid、alkali、water supply and dewater、food、paper pulp etc.
Display       Flow rate、flow、percentage、integrating flow、fault alarm etc.
Supply power  220V AC?4V DC
Installation type  Integrative or split

China · Fu Jian Wide Plus Precision Instruments Co., Ltd.
ADD: NO.1, Cha shan Road, Mawei Hi-tech Development Zone, Fuzhou, China.
Tel?86-591-83969908 83969918   Fax?86-591-83969222 83969444   http://www.wideplus.com   E-mail：info@wideplus.com