Electromagnetic Flow Meter (EMF)

Electromagnetic Flow Meter (EMF)

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Description

Smart electromagnetic flow meter is a high-performance, high-reliability flow meter. It used to measure the volume flow of conductive liquid and slurry in closed pipelines. Widely used in steel, electricity, petroleum, chemical industry, coal, metallurgy, papermaking, water supply and drainage, food, pharmaceutical industry, etc.

Features

  • Measurements are not affected by fluid density, viscosity, temperature, pressure and conductivity.
  •  No obstacles in the measuring tube, no pressure loss, low requirements for straight pipe section.
  • The LCD backlight type converter can be easily displayed and read in the sun or in a dark room.
  • In harsh environments, parameters can be set via infrared touch buttons without opening the cover of the converter (need to be customized)
  • Flow meter with bidirectional measurement system, built-in three totalizer: positive total, reverse total and total difference.
  • It has various forms of output: current 4-20mA, pulse, frequency, RS-485, HART.
  • The converter has self-diagnosis alarm output, no-load detection alarm output, flow upper and lower limit alarm, batch control (need to be customized) and other alarm output functions.
  • Not only for general processes, but also for the measurement of ore pulp, mud, coal slurry, paper pulp and paste liquid.
  • High-pressure electromagnetic flow sensor with PFA lining technology, resistant to high pressure and negative pressure, especially suitable for petroleum, chemical and other industries.
  • Explosion-proof instruments can be used in corresponding explosion-proof places.

Specifications

Item Technical Parameters
Main power AC220V 50HZ/DC24V/DC12V/3.3V battery power supply
Power consumption <15W (Supporting power consumption with sensors )
 

Display and buttons

 Display in Chinese and English, can display instantaneous flow, accumulated flow

and alarm display (excitation open circuit alarm, empty pipe alarm, flow over limit alarm). Four membrane touch switches for data setting
Counter Forward total, reverse total
 

 

 

 

 

 

 

 

 

Output signal

 Analog output Two-way, fully isolated 0~10mA/4~20mA
Load resistance: 0~1.5kΩ when 0~10mA; 0~750Ω when 4~20mA
 

Frequency output

 Forward and reverse flow output, the upper limit of output frequency can be set within 1~5000Hz. Open collector bidirectional output of transistor with photoelectric isolation. The external power supply is not greater than 35V, and the maximum current of the collector when it is turned on is 50mA
 

Alarm Output

 Two-way open collector alarm output with photoelectric isolation transistor. The external power supply is not greater than 35V, and the maximum current of the collector when it is turned on is 250mA. Alarm status: fluid empty pipe, excitation disconnection, flow overrun
 

 

Pulse output

 Forward and reverse flow output, the output pulse upper limit can reach 5000CP/S.

Pulse equivalent is 0.0001~1.0m³/P. The pulse width is automatically set to 20ms or square wave. Open collector output of transistor with photoelectric isolation. The external power supply is not greater than 35V, and the maximum current of the collector when conducting is 50mA
Matching accuracy 0.5%
Damping time constant Continuous variable from 0~100s (90%) time grading optional
Communication Optional RS232C or RS485 serial communication interface, HART communication protocol
Loss of power The internal design of the instrument has a power-off clock, which can store 16 power-off records (10 years) (need to be customized)
Protection class IP65(standard);IP68 can be customized for the split type(only for transmitter).
Explosion-proof mark Ex d ia [ia Ga] q IIC T6 Gb

Documentation

Brochure of Electromagnetic Flow Meter (emf)