ELECTROMAGNETIC FLOW METER - MAGMETER

Introduction :
The electromagnetic flow meter virtually approaches the ideal flow meter suitable for wide range of liquid flow measurements even with very low conductivities. The meter offers no resistance to flow hence the pressure drop is almost negligible. The measurement being based on Faraday’s law of Electromagnetic induction, is independent of viscosity, density, pressure & temperature of flowing medium. The measurement is not affected by solid impurities as long as the min. conductivity of 5 s/cm is available. It is a true volumetric flow measurement. We offer various materials of construction for meter lining & electrodes to cover majority of corrosive liquids.

The Technique called as ‘pulsed DC’ is used which offers very high zero stability & accuracy of measurement. The standard current output of 4-20 mA DC is provided which is linearly proportional to volumetric flow rate & additional frequency output is also provided.
Magnetic Flow Meter
 The method of flow measurement based on Faraday’s law of electromagnetic induction. When a conductor moves within a magnetic field, voltage is induced in it which is proportional to the velocity of conductor. in this case the conductor is flowing media .the equation is as below. E=B.v.d. Where , E = Induced voltage [proportional to velocity] B = Magnetic flux density v = mean vcity of the media d = Distance between the sensing electrodes For a given size of flow tube & compatible am plifier the flux density ‘B’ is constant the distance the electrodes is constant. Hence, the induced voltage is proportional to the velocity of the flowing media. Thus the unit can be calibrated in terms of volumetric flow rate by knowing the cross - sectional area of the tube
 1 Use of pulsed DC magnetisation & auto zero technique offers excellent long term zero stability 2 Measurement is independent of velocity profile across the diameter of the pipe-line. 3 Measurement result are independent of density , viscosity, pressure temperature , soli-impurities& conductivity variation [above5 siemens] 4 No additional pressure drop across the meter which relieves the process designer while sizing his pumping requirement. Simple to install as no special precautions of straight pipe lengths required 5 Compatible with virtually all corrosive/ non- corrosive liquids . 6 Protection class offered IP65. 7 higher ratio of return on investment to investment. 8 Bath-tub curve remains flatter for very long period
Applications
 This meter is more suitable with those fluids which present difficulties in handling. Fluids such as effluents, slurries pulps, brine and other highly corrosive liquids, acids and bases, fermenter wash, molasses etc. Following industries can find lot of application of this flow measurement technique. Following industries can find lot of application of this flow measurement technique. Effluent treatment plants Water supply schemes Steel & Aluminium Chemical/Pharmaceutical Food & Drugs Sewage treatment plants Sugar industries & Distilleries Pulp & paper Petrochemicals /fertilizers Petrochemicals & Fertilizers.
Specifications
 METERING TUBE : SROAT 1000 Meter size : DN 10 to DN 350 for higher size consult facory Media Pressure : up to DN-100 to DN 200- Pn16 DN-250 to DN 350-PN 10 Media temperature : PTEF Liners 0-150 c max. For other Liners 0-90 c max. Ambient Temperature Range: 0-50 c Flanges Standard : ANSI / DIN /BS SMS/ Triclamp Power Supply to filed coils : Plused DC Materials : pipe : Electrode : Liner : Flanges : Coil Housing : ss 316 [non magnetic ss 316 / Hastelloy C/Pt /Ta /Ti. PTFE / Neoprene / soft Rubber /Hard Rubber. carbon steel / ss 316 / ss 316 L /ss 304. Carbon steel / ss, Epoxy Painted.

TRANSMITTER SROAT 1000 A :
 Type : Integral mounted [standard] Remote Mounted [on request] Min. Media Conductivity : 5 s / cm [ for lower conductivities consult factory] Signal Output : 4-20 mA dc isolated in max. 600 ohms. Additional option : Pulsed output with adjustable count rate from 1 count / hr to 10 counts / Hr.[open collector with 100 mA / 24 dc capacity] Singal output (cont.) Or Frequency output : 0-10 Khz prop.To 0-100% flow rate [open colloctor with 10 mA/24 v dc max.] Coil Excitation Frequency : Selectble by links a) 25Hz b)12.5Hz c)6.25Hz d)3.15Hz Local Display : a)31/2 digit LCD calibrated in % engineering units b) 8 digit LCD non resettable type for totalized quantity. Flow Velocity Range : 0.1 m/s to 10 m/s Accuracy : + 0.5% of reading [at ref. Conditions ]between 100%to 10% of calibrated range +0.75% of reading for flow rate between 10% to 5% [refer accuracy graf] Ref. conditions : Power supply nominal. temperature 27 c+2 c Repeatability : +0.2% of reading Ambient temperature Drift : 0 50 c Temperature drift : +0.015% per c max. Material of Housing : Al. Die cast / ss 304 . Power supply : 230 v ac/110v ac 50 Hz/24vdc. Damping : Adjustable from 5 to 30 secs. Cable Entries : 4 no. For remote amplier. 2 no. For integral amplier. ½ NPT/ 1/2 BSP/ pg4 [female] for Al. Die cast Housing 3/4 ET for ss 304 Housing Ingress Protection : IP-65

FLOW RATE TABLE : Flow Rate At V= 1m/s

 DN M3 / Hr Lpm LPS 10 0.282 4.712 0.078 15 0.636 10.602 0.176 20 1.130 18.849 0.314 25 1.767 29.452 0.490 32 2.895 48.254 0.804 40 4.523 75.398 1.256 50 7.068 117.809 1.963 65 11.945 199.098 3.318 80 18.095 301.592 5.026 100 28.274 471.238 7.853 125 44.178 736.310 12.271 150 63.617 1060.287 17.671 200 113.097 1884.955 31.415 250 176.714 2945.243 49.087 300 254.469 4241.150 70.685

Ordering Information :

 Flow Meter Size Order Code MS 03 MS 01 DN 10 MS 02 DN 15 MS 03 DN 20 MS 04 DN 25 MS 05 DN 32 MS 06 DN 40 MS 07 DN 50 MS 08 DN 65 MS 09 DN 80 MS 10 DN 100 MS 11 DN 125 MS 12 DN 150 MS 13 DN 200 MS 14 DN 250 MS 15 DN 300 MS 16 Any Other

 Flange / End Connection Standards Order Code FS 07 FS 01 DIN Pn40 FS 02 DIN PN 16 FS 03 DINPN 10 FS 04 ANSI 300 FS 05 ANSI 150 FS 06 SMS FS 07 Tri-clamp FS 08 Any other

 Liner Material Order Code LM 02 LM 01 Teflon[PTFE] LM 02 Neoprene LM 03 Soft Rubber LM 04 Hard Rubber LM 05 Any other

 Electrode Material Order Code EM 04 EM 01 Stainless steel 316 EM 02 Hastelloy C EM 03 Tantalum EM 04 Titanium EM 05 Platinum EM 06 Any other

 Flange / End Connection Material Order Code FM 03 FS 01 Carbon steel FS 02 Stainless steel 304 FS 03 Stainless steel 316 FS 04 Stainless steel 3161

 Power Supply Order Code 01 01 110 + 10%V AC, 50 Hz 02 230 + 10%v AC ,50 Hz 03 24 Vdc+10%

 Flow Transmitter Order Code FT 02 FT 01 Integral [ AL. Diecast] FT 02 Remote [ AL. Diecast]