Mag flow
- 1. Introduction Electromagnetic Flowmeter is a new range of Bipolar Pulsed DC Full Bore Type Electromagnetic Flowmeters. It is suitable for pipes with diameters of 10 mm to 600 mm. They are based on Faraday’s law of Electromagnetic Induction. The meter features flanged construction and is available with choice of Liner and Electrode materials. It has excellent accuracy and flow rangeability. The meter is suitable for use on wide range of corrosive and aggressive range of conductive liquids. Salient Features Based on Faraday’s law of Electromagnetic Induction. Suitable for pipe sizes of diameters 10 mm to 600 mm Coil Assembly in hermetically sealed Welded construction Choice of PTFE / Neoprene Rubber / Polyurethane liners Integral or Remote Transmitter Field interchangable electronics Optional LED display for Flow Rate or Totaliser indication in Engineering Units No pressure loss High linerarity due to characteristic magnetic field Absolute Zero stability and noise elimination Measurement independent of liquid properties Measuring your Liquid Flow Applications Chemical, Petrochemical and Process Industries Fertilizer Industries Pharmaceutical Industry Food Industry Drug Industries Sugar Industries Beverage Industries Paper and Pulp Industries Aluminum Industries Steel Industries Mining Industries Dredging Industries Water and Waste - Water Management And many others Integral Type Remote Type Electromagnetic Flowmeter Series : LFM-6000 Electromagnetic Flowmeter Series : LFM-6000
- 2. Electromagnetic Flowmeters are based on Faraday’s law of Electromagnetic Induction. In a Electromagnetic Flowmeter, magnetic field is generated by a set of coils. As the conductive liquid passes through the electromagnetic field, an electric voltage is induced in the liquid, which is directly proportional to its velocity. This induced voltage is perpendicular to both the liquid flow direction and the electromagnetic field direction. The voltage sensed by the electrodes is further processed by the transmitter to give standardised output signal or displayed in appropriate Engineering Units on LED/LCD Display. The flux density of the electromagnetic field in a given Flowmeter and the distance between the electrodes are constant, therefore, the induced voltage is only a function of liquid velocity. _ E = K.B.v.D where E : Induced voltage K : Flow Tube Constant B : Magnetic field velocity _ v : Mean flow velocity and D : Electrode Spacing The induced voltage is not affected by the physical properties of liquid like temperature, viscosity, pressure, density and conductivity, as long as conductivity of the measure liquid is above minimum threshold level. For reliable measurement the pipe must be completely full of liquid. The electromagnetic field coil assembly is excited by pulsed DC technique, which eliminates the interfering noise and provides automatic zero correction. Operations Volume flow is calculated by equation : 2 Q =v.D . /4 = E.D.Therefore, Q K.B.4 Specifications Suitable for Pipe Sizes Media Conductivity (Min.) Media Pressure Media Temperature (PTFE) Ambient Temperature Range Materials : Pipe Liner Electrode End Connections / Flanges Coil Housing Transmitter Flange / End Connection Std. Power Supply Power Consumption Cable Gland Entry Analog Output (Isolated) Pulsed Output (Optional) Communication Port (Optional) Maximum Load Resistance Response Time Flow Velocity Range Ingress Protection LED Display LCD Display Accuracy For Flow between 20 to 100% For Flow between 0 to 20% Reference Conditions Power Supply Ambient Temperature Load Resistance Repeatability Effect of Ambient Temperature Effect of Power Supply Effect of Load Resistance : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : DN 10 to DN 600 10 µS/cm (Consult factory for 5 µS/cm) PN 40 upto DN 80, PN 16 upto DN 200, PN 10 upto DN 600 o o 0 - 180 C with Remote transmitter o o 0 - 120 C with Integral transmitter o o 0 - 90 C max for other liners o o 0 - 50 C SS 316 (Non - magnetic ) PTFE / Neoprene / Polyurethane SS / Hastelloy C / Ta / Ti / Pt Carbon Steel / SS 304 / SS 316 / SS 316L Carbon Steel / SS, Epoxy painted Cast Aluminium (LM6) , Epoxy painted DIN / ANSI / BS / SMS / TRI-CLAMP 110 / 240V AC + 15%, 50Hz 20 VA 1/2” NPT (F) 4-20 mA DC / 0-20 mA DC Low Pulsed Rate Output 10 to 36000 pulses per hour a) Output to drive directly external electromagnetic counter of 12/24V DC @ 200 mA capacity OR b) Open Collector Output , High Pulse Rate Output, 0.5 KHz/1 KHz/10KHz/ (Open Collector Output) RS - 232 / RS - 485 MODBUS RTU Protocol 1000 5 seconds 0.3 to 10 m/s IP - 65 (IP - 68 on request) 4 Digit Indication for Flow Rate and 8 Digit Indication for Totaliser Programming from Front Keyboard for Engineering Units 16 X 2 (Two Line) Backlit LCD + 0.5% of measured value (calibrated) at reference conditions + 1% of measured value (normal) Refer Error Diagram below Nominal 0 0 25 + 2 C 500 + 0.2% of span 0 Less than 0.2% per 10 C Less than 0.1% per 10% Voltage variation Less than 0.1% of span
- 3. Error Diagram : 5 4 3 2 1 0 1 2 3 4 5 20% 40% 60% 80% 100% %ErrorofActualFlow % Flow of Calibrated Range - + Flow Rate at V = 1 m/Sec.Flow Rate Table DN 3 m /Hr LPM LPSDN 3 m /Hr LPM LPS Ordering Information POWER SUPPLY 1) 240 +/- 15% V AC 50 Hz 2) 110 +/- 15% V AC 50 Hz LINER MATERIAL 1) Teflon (PTFE) 2) Neoprene 3) Hard Rubber 4) Polyurethane 5) Any other 1) DN 10 2) DN 15 3) DN 20 4) DN 25 5) DN 32 6) DN 40 7) DN 50 8) DN 65 9) DN 80 10) DN 100 21) Any other 11) DN 125 12) DN 150 13) DN 200 14) DN 250 15) DN 300 16) DN 350 17) DN 400 18) DN 450 19) DN 500 20) DN 600 FLOW METER SIZE ELECTRODE MATERIAL 1) Stainless Steel 316 2) Hastelloy C 3) Tantalum 4) Titanium 5) Platinium 6) Any other FLANGE / END CONNECTIONS STANDARDS 1) DIN PN 40 2) DIN PN 16 3) DIN PN 10 4) ANSI 300 5) ANSI 150 6) Tri-clamp 7) Any other FLANGE / END CONNECTIONS MATERIAL 1) Carbon Steel 2) Stainless Steel 304 3) Stainless Steel 316 4) Any other COIL HOUSING 1) Carbon Steel 2) Stainless Steel 304 3) Stainless Steel 316 OUTPUT SIGNAL 1) 4-20 mA DC 2) 0-20 mA DC FLOW TRANSMITTER 1) Integral without Display 2) Integral with Display 3) Remote with Display 4) Remote without Display PULSED OUTPUT (Optional) 1) Low Pulse output 2) High Pulse output 3) Nil COMMUNICATION PORT (Optional) 1) RS - 232 2) RS - 485 Notes : 1) Flowmeter is supplied with 2 Nos. of SS 316 Earthing Rings of 3 mm thickness. 2) Remote Flow Transmitter is supplied with 2” Pipe Mounting Kit and 10 meter each electrode signal cable and coil supply cable. 3) Installation location should be such that the Flowmeter will always remain full with liquid. 4) A minimum 5D upstream and 3D downstream straight lengths should be maintained at installation location. where D is the pipe diameter. The Flowmeter installation location should be free of bends, elbows, tees, valves etc. 10 15 20 25 32 40 50 65 80 100 0.282 0.636 1.130 1.766 2.909 4.523 7.068 11.944 18.092 28.270 125 150 200 250 300 350 400 450 500 600 44.18 63.61 113.08 176.69 254.43 346.31 452.32 572.47 706.75 1017.72 4.711 10.601 18.846 29.447 48.247 75.386 117.791 199.100 301.546 471.166 736.198 1060.125 1884.667 2944.792 4240.500 5771.792 7538.668 9541.980 11779.169 16962.003 0.078 0.176 0.314 0.490 0.804 1.256 1.963 3.317 5.025 7.852 12.270 17.668 31.411 49.080 70.675 96.197 125.645 159.036 196.321 282.702
- 4. Notes : 1. Above dimensions are with ANSI 150 / DIN PN 16 flanges ( For other flanges - Consult Factory ) 2. Add total 6mm for two earthing / Linear protection rings to dimension ‘D’ 200 200 200 200 250 300 350 400 500 500 600 600 600 600 10, 15, 20 25, 32 40, 50 65, 80 100, 125 150 200 250 300 350 400 450 500 600 65 80 120 130 170 190 245 295 335 360 395 430 465 550 310 325 365 375 415 435 490 540 580 605 640 675 710 795 125 155 230 250 330 370 480 580 660 710 780 855 925 1090 120 150 225 245 325 365 475 575 655 705 775 850 920 1085 190 205 245 255 295 315 370 420 460 485 520 555 590 675 A B C D E FDN (mm) Meter Dimensions in mm Continuous efforts for product development may necessitate changes in these details without notice Dimensional Drawing : Integral Type Remote Type 89 C E 89 43 65 F A D 225 B A D C E 62 207 250 180 Display Housing Junction Box 2” Pipe Mounting Kit 105 All Dimensions in mm EI-5, Electrocnic Zone, MIDC Bhosari, Pune 411026. Phone : 020-66305290/1, 020-27121066, 27127620, 27122304, Fax : 020-27122888 E-mail : nishko@vsnl.com Web site : www.nishko.com NISHKO INSTRUMENTS PVT. LTD.