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Kaidi KD FEM Integrated (split) Electromagnetic Flow Meter

Kaidi KD FEM  Integrated (split) Electromagnetic Flow Meter

Kaidi KD FEM  Integrated (split) Electromagnetic Flow Meter
  • Kaidi KD FEM  Integrated (split) Electromagnetic Flow Meter
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Kaidi KD FEM Integrated (split) Electromagnetic Flow Meter
petroleum, chemical industry, metallurgy, textile, paper making, environmental protection, food
Protection Grade:
IP65, up to IP68 for special order
0.5 level; 1.0 level
Process Pressure:
Process Connection:
Flange connection is adopted between the flow meter and the piping, The flange meets the national standard: GB/T9113.1—2000
Explosion proof certification:
Ex dibIIBT4Gb
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F E M type intelligent electromagnetic flow meter is composed of two parts: sensor and converter. It works based on Faraday's law of electromagnetic induction. It is used to measure the volume flow of conductive liquids with a conductivity greater than 5μS/cm. It is an induction meter for measuring the volume flow of conductive media. In addition to measuring the volume flow of general conductive liquids, it can also be used to measure the volume flow of strong corrosive liquids such as strong acids and alkalis and uniform liquid-solid two-phase suspended liquids such as mud, mineral pulp, and paper pulp. It is widely used in the flow measurement of petroleum, chemical industry, metallurgy, textile, paper making, environmental protection, food and other industrial departments and municipal management, water conservancy construction, river dredging and other fields.


 The measurement is not affected by changes in fluid density, viscosity, temperature, pressure and conductivity.

 There are no flow blocking parts in the measuring pipe, no pressure loss, and lower requirements for straight pipe sections. It has unique adaptability to slurry measurement.

Reasonable selection of electrode and lining materials, that is, it has good corrosion resistance and abrasion resistance.

 Fully digital processing, strong anti-interference ability, reliable measurement, high precision, flow measurement range up to 150:1

Ultra-low EMI switching power supply, suitable for a wide range of power supply voltage, and good anti-EMI performance.

 Using SMD device surface mount (SMT) technology, the circuit has high reliability.

There are no movable parts in the pipeline, no flow blocking parts, and almost no additional pressure loss during the measurement.

The measuring range can be modified online according to the actual needs of users at the scene.

The measurement result has nothing to do with the flow rate distribution, fluid pressure, temperature, density, viscosity and other physical parameters.

High-definition backlit LCD display, full Chinese menu operation, easy to use, simple to operate, easy to learn and understand.

 With RS485, RS232, Hart and Modbus Profibus-DP and other digital communication signal output (optional).

With self-inspection and self-diagnosis functions.

 Hourly total recording function, recording the total flow in hours, suitable for time-sharing measurement system (optional)

 There are three internal totalizers that can respectively display the forward cumulative amount, the reverse cumulative amount and the difference cumulative amount, and the internal power-down clock can record 16 power-off times. (Optional)

Infrared handheld manipulator, 115KHZ communication rate, long-distance non-contact operation of all functions of the converter (optional)


According to the principle of Faraday electromagnetic induction, a pair of detection electrodes are installed on the tube wall perpendicular to the axis of the measuring tube and the magnetic line of force. When the conductive liquid moves along the axis of the measuring tube, the conductive liquid cuts the magnetic line of force to generate an induced electric potential. This induced electric potential consists of two The detection electrode detects, the value is proportional to the flow rate, and its value is: E=B•V•D•K converter has 4-20mA output, alarm output and frequency output, and is equipped with RS-485 and other communication interfaces, and Support HART and MODBUS protocol.



ParameterSelection table
Executive standardElectromagnetic flow meter (JB/T9248—1999)FEM electromagnetic flow meter

Diameter (mm)


Pipeline PTFE lining: DN10—DN600Pipe diameter10-2000mm
Pipeline rubber lining: DN40—DN2000Instrument typeSAll-in-one
LSplit type
Flow directionPositive, negative, net flowElectrode materialM316L stainless steel
TTitanium (Ti)
DTantalum (Ta)
PPlatinum (Pt)
WTungsten Carbide (WC)
Turndown ratio150:1Output0no output
1Pulse equivalent
Repeatability error±0.1% of measured valueLining materialCNeoprene (CR)
UPolyurethane rubber (PU)
FPolytetrafluoroethylene (F4/PTFE)
ETeflon (F46/FEP)
PTetrafluoroethylene perfluoroalkoxy vinyl ether copolymer (PFA)
Accuracy class0.5 level; 1.0 levelpowered0220VAC
Medium temperatureHigh temperature rubber lining: -20+90°CProtocol0No communication
PTFE lining: -30+120°CGround ring0Without grounding ring
1With grounding ring
2With ground electrode
High temperature type PTFE lining: -20+160°CWithstand voltage ratingP11.6MPa
P-(n)Negotiate order
Conventional rubber lining: -20+60°CExplosion proofNNo explosion-proof
EExplosion-proof Exd[ia]ia II CT5

Work pressure

(High pressure can be customized)

DN10DN50≤4MPaRangenUnit: m3/h
DN65DN200≤1.6MPaExample: F M-100SM2F141P1N-150
Flow rate range0.115ms
Conductivity rangeMeasured fluid conductivity ≥5μS/cm
Signal output

420mA (load resistance 0750Ω), pulse/frequency,

Control level

Communication output

RS485, MODBUS protocol, HART protocol,

Profibus—DP protocol

Power supply20VAC, tolerance 15% or 24VDC, ripple ≤5%
Length of straight pipeUpstream≥5DN, downstream≥2DN
Connection method

Flange connection is adopted between the flow meter and the piping,

The flange meets the national standard: GB/T9113.1—2000

Explosion-proof gradeEx dibIIBT4Gb
Protection levelIP65, up to IP68 for special order
Ambient temperature-2560°C
Relative temperature5%~95
Total power consumptionLess than 20W


Lining materialNameSymbolPerformanceMaximum working temperatureApplicable liquidApplicable caliber

Medium abrasion resistance, resistant to general low concentration

Corrosion of acid, alkali and salt


Tap water, industrial water,seawater

Polyurethane rubberPU

Excellent wear resistance, acid and alkali resistance


60°CPulp, mineral pulp and other slurriesDN502000

Chemical properties are very stable, resistant to boiling salt

Corrosion of acid, sulfuric acid, aqua regia, concentrated alkali

160°CCorrosive acid-base salt liquidDN251600
FEPF46(FEP)The chemical performance is equivalent to F4 compressive strength, and the tensile strength is better than F4120°CCorrosive acid-base salt liquidDNl0200
Copolymer of tetrafluoroethylene and perfluoroalkyl vinyl etherPFA

The chemical performance is equivalent to F46

Tensile strength is better than F46

180°CCorrosive acid-base salt liquidDNl0300


MaterialCorrosion resistance
316LApplication: domestic water, industrial water, raw water, well water, urban sewage, weakly corrosive acid, alkali, salt solution
Ha BApplication: non-oxidizing acids such as hydrochloric acid (concentration less than 10%), sodium hydroxide (concentration less than 50%), sodium hydroxide alkali solutions of all concentrations, phosphoric acid, organic acids
Not applicable: Nitric acid
Ha CApplication: mixed acid and mixed solution of chromic acid and sulfuric acid, oxidizing salts such as Fe+++, Cu++, sea water, phosphoric acid, organic acid
Not suitable for: hydrochloric acid
Titanium (Ti)Application: salt, such as (1) chloride (chloride/magnesium/aluminum/calcium/ammonium/iron, etc.) (2) sodium salt, potassium salt, ammonium salt, hypoaluminate, seawater with a concentration of less than 50% hydroxide Potassium, ammonium hydroxide, barium hydroxide alkali solution
Not applicable: Hydrochloric acid, sulfuric acid, phosphoric acid, hydrofluoric acid and other reducing acids
Tantalum (Ta)Application: Hydrochloric acid (concentration less than 40%), dilute sulfuric acid and concentrated sulfuric acid (excluding fuming sulfuric acid), chlorine dioxide, ferric chloride, hypochlorous acid, sodium cyanide, acetic acid, etc., nitric acid (including fuming nitric acid) Equal oxidizing acid, aqua regia with temperature lower than 80°C
Not applicable: alkali, hydrofluoric acid
Platinum (Pt)Application: Almost all acid, alkali and salt solutions (including fuming sulfuric acid and fuming nitric acid)
Not applicable: aqua regia, ammonium salt
Tungsten carbideApplication: Pulp, sewage, anti-interference of solid particles
Not applicable: inorganic acid, organic acid, chloride


Please Send Us your Application details

Measuring range , medium, Installation method (flange, thread), Pressure range, Remote transmitter, Level alarm switch

Our technical team will check your specifications and make a best solution for you.


More  Model available for all appication, different termperture and pressure!

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