1.DN3~3000 2.Ambient temp.:-25~+60deg.C,-10~+60deg.C 3.output signal:current output,pulse output,double-ways alarm output

Summary

The electromagnetic flowmeter is composed of two parts by electromagnetic flow sensor and electromagnetic flow converter.The operation of an electromagnetic flowmeter is based on Faraday law of electromagnetic induction.The mainly parts of the sensor are: measuring tube,electrode poles,excitation coil,iron core,yoke and housing. The measuring tube of the sensor is a short alloy tube whose diameter is D, the inner surface of it has an insulating liner.Two electrodes are fixed in the measuring tube along with the diameter direction of it and they usually flush with the inner surface liner.When excitation coil pulsed by two-way square wave,there generates a working magnetic field with a flux density B in the vertical direction of the measurement axis.In the meantime,if some electrical conductivity liquid flows at an average velocity V through the measuring tube ,cuts lines of the magnetic field,there generates induced electromotive force E.Electromotive force E is directly proportional to the product of flux density B,measuring tube diameter D and average velocity V,that's: E BVD. Electromotive force E(flow signal) is measured by the electrodes and transmitted to transducer through cable.After the transducer handles the flow signal by magnifying it, the flow and total amount can be displayed,also will output pulse and analog current etc.

 Features:

The electromagnetic flowmeter is a kind of measuring instrument based on Faraday law of electromagnetic induction,which can measure the volume flow of electrically conductive liquid ,seriflux and so on.It has the features as following:

1. The measurement can not be influenced by the change of fluid density,viscosity,temperature,pressure and conductivity;

2.The inside of measuring tube do not have the parts to block the flow move,no pressure loss,low demand in straight pipe;

3.Totally deal with digital quantity, high anti-interference,reliable measurement,high precision,flow range reach to 1500:1;

4.Converter adopts to 16-bit embedded microprocessor and surface mounting technology,convenient preferences,totally chinese menu operation,easily use,with self-check and diagnosis functions;

5.With the function of measuring two way flow,can show the positive and reverse flow,also have two way current and rate output,which is convenient for the record and store different flow signal;

6. Inside have three counters,which can separately show positive cumulation,reverse cumulation and D-value calculation;

7.With RS485 or RS232 digital communication signal output;

8.With self-check and diagnosis functions.

Technical Parameter:

Chart 1
Carried Standard	ANSI/DIN/JIS
DN	3.6.10.15.20.25.32.40.50.65.80. 100.125.150.200.250.300.350.400.450. 500.600.700.800.900.1000.1200.1400. 1600.1800.2000.2200.2400.2600.2800.3000
Max.Flow Velocity	15m/s
Accuracy	±0.5% of indicating value(flow velocity 0.8m/s);  ±4mm/s(flow velocity<0.8m/s )
Fluid Conductivity	≥5uS/cm
Nominal Pressure	4.0MPa	1.6MPa	1.0MPa	0.6MPa		6.3,10MPa  etc.
	DN3~ DN150	DN15~ DN600	DN200~ DN1000	DN700 ~DN3000		Special  Ordering
Lining Material	PTFE,Poly neoprene, Polyurethane,F46,PFA with net
	Sensor		-25 deg.C~+60 deg.C
	Convertor and integrated type		-10 deg.C~+60 deg.C
Fluid Max.Temperature	Integrated type	70 deg.C
	Separated type	Poly Neoprene Lining		80 deg.C;120 deg.C(notes in order)
		Polyurethane Lining		80 deg.C
		PTFE Lining		100 deg.C;150 deg.C(notes in order)
		FEP Teflon
		PFA with net
Material of signal electrode  and ground electrode	SS316L,HastelloyB, HastelloyC,Ti,Ta,Platinum-iridium alloy, Stainless steel coating with tungsten carbide
Electrode drawknife apparatus	DN80~DN3000
Connection flange material	Carbon steel
Connection ring material	Stainless steel1Cr18Ni9Ti
Enclosure protection	ND15~DN3000 separated sensor with rubber or PU lining				IP65 or IP68
	Integrated(rounded converter)				IP65
	Other sensors and separated converter				IP65
	Explosion proof sensor and converter				IP65
Spacing(separated type)	Normally the separation distance between converter  and sensor is less than 100m,if more please order specially. (Note: our company provide 10m length standardly,if need more,  please indicate the length in order, and the cost will be add more)
Output of analog current	0~10mA     load resistance 0~1.5Ω
	4~20mA     load resistance 0~750Ω
Frenquency output	1~5000Hz
Pulse output	Separated type output by two way: forward and reverse flow;  integrated type output one way
	Frenquency range:0~5KHz,uper limit 1~5 optionally
	Square wave or pulse with 25ms pulse width
	Transistor switch output with isolation protection, can absorb 250mA current and withstanding 35V voltage
Two-path alarm output	Alarmable(programable)high/low flow,blank pipe, fault condition,forward and reverse flow,simulation  volume exceeds range,pulse volume exceeds range, disconnect pulse small signal
	Transistor switch output with isolation protection, can absorb 250mA current and withstanding 35V voltage(Not isolated with pulse output)
Digital communications	RS232,RS485,HART(add specially)
Explosion proof mark	Integration ExdeiaⅡCT4
	Separated Exd[ia] ⅡCT4(converter)     ExdeiaⅡCT4(sensor)

Company profile:

CHANGZHOU CHENGFENG FLOWMETER CO.,LTD was established in 1979,at the begining our company named as Qinfeng Flow meter.we are the professional manufacturer of flowmeters,thermometers,liquid level meters,transmitters and so on.The main products are contain of LZB/LZJ(-F)glass tube flow meter,LZB-W(B)micro type glass tube flow meters,G.R.F10/20/30 glass tube flow meters,LZZ/LZD(-F)metal tube flow meters,organism panel type purified flow meters,UHC magnetic flap liquid level meters,LUGB/LUCB vortex street flow transmitter,LDG electromagnetic flowmeters,LWGY/LWY turbine flowmeters,WSS series bimetallic thermometer and so on about five series and five hundred kinds products.

  

Contact Details:

Ms Vicky Lv

Sales Manager

Changzhou Chengfeng Flowmeter Co.,Ltd

ADD:No.15,Tongjia Industrial Park,Changzhou,Jiangsu Prov.,China

Website:www.qf-meter.com

Skype:vicky_china68 

Tel:+86-519-85327611       

Fax:+86-519-85505269 

Mob:+86-13775129256