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Flow Meters

Leading Manufacturer, Supplier & Retailer of DIGITAL VARIABLE AREA FLOWMETER, ELECTROMAGNETIC FLOWMETER INTEGRAL TYPE and ELECTROMAGNETIC FLOWMETER REMOTE TYPE.

DIGITAL VARIABLE AREA FLOWMETER

  • Accuracy ± 1.5% of FSR.
  • Repeatability ± 0.25% of FSR
  • Range ability 10 : 1
  • Temperature Rating -50 to 120oC.
  • Pressure Rating 80 kg/cm2
  • Flow Direction Bottom to Top
  • End connection Flanged to suit customer’s requirement.
  • Wetted Part To suitable specific liquid or gases.
  • Mounting position Vertical
  • Indication Digital flow rate
  • Transmission 2 wire loop powered
  • Enclosure Flameproof / weatherproof
  • Power supply 9 VDC battery

Features :

Die Cast Aluminum enclosure WP to IP-55 or Flameproof suitable for Gas Gr. IIA & IIB.Line sizes from 15NB TO 150NBDigital display for flow rate9V Battery / 24V DC operatedAccuracy :1.5%

Optional features (With external Supply 24V DC)Output 4 to 20mA for flow rateDisplay for Total Flow

Theres No Alternative To ReliabilityThats why variable area flowmeters from Crystal offer not only the maximum possible accuracy but also maximum reliability.

Origin Of Metal Tube RotameterIt operates on the principle of variable area; the fluid in the metal tube raised a float in the taper tube increasing the area of passage of fluid. The float moves up in proportion to the rate of flow of fluid and get stabilized when the weight of the float is balanced by the upward hydraulic force. By a magnetic coupling the inner float movement through a series of linkages and counter weight. The tube and the float combination determines the flowrate.

Digital Variable Area Flow MeterThe inner float magnetic field is detected by the high sensitive magnetic field detection sensor, enable us to show the digital readout. As such This flowmeter does not require any electrical connection, since it operates on battery. This got an inbuilt two wire transmitter just provide 24 VDC. And take 4 20 mA signal.

Benefits of CRYSTAL Variable Area FlowmetersLocal indication without the need for auxiliary power.Minimum pressure losses. Easy to read.Accurate measurement even at higher flow (150 m3/hr).Suitable for low flow (8LPH) Default inbuilt transmitter of 4 20 mA (Loop powered).No movement assembly reducing the maintenance.

Line Size NB 20oC. water flow m3/hr 0oC. 1 atm Air flow Nm3/hr Approx. Pressure Loss mm WC
15 0.2 – 1. 2 6 – 35 200 – 225
20 0.4 – 2. 0 8 – 60 220 – 230
25 1 – 5 30 – 150 200 – 270
40 2.5 – 10 70 – 300 200 – 250
50 3.5 – 17 100 – 500 225 – 260
65 6 – 30 200 – 900 225 – 240
80 10 – 45 300 – 1200 225 – 260
100 20 – 100 600 – 3000 350 – 700
125 30– 120 900– 4000 300– 850
150 30– 150 900– 4500 35– 950
 

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ELECTROMAGNETIC FLOWMETER INTEGRAL TYPE

  • Accuracy ±0.5% F.S.
  • Repeatability ±1%
  • Size 15NB to 300NB
  • Type of Output 4 to 20 mA DC, Isolated
  • Calibration Range As per requirement (Factory Calibrated)
  • Linearity ±0.5%
  • Process Temperature 150oC max.
  • Process Pressure 10 kg/cm2 max.
  • Material of construction Lining - Neoprene / Rubber. PTFE (Teflon)
  • Enclosure Protection WP to IP-66 & FLP for Gas Groups IIA & IIB.
  • Flange MS / SS
  • Electrode SS 316
  • Body MS
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ELECTROMAGNETIC FLOWMETER REMOTE TYPE

  • Accuracy ± 0.5% of measured value (calibrated) at reference conditions
  • Repeatability ± 0.2% of span
  • Suitable for Pipe Sizes DN 10 to DN 600
  • Media Conductivity (Min.) 10 μS/cm (Consult factory for 5 μS/cm)
  • Media Pressure PN 40 upto DN 80, PN 16 upto DN 200, PN 10 upto DN 600
  • Media Temperature (PTFE) 0o - 180o C with Remote transmitter 0o - 120o C with Integral transmitter 0o - 90o C max for other liners
  • Ambient Temperature Range 0o - 50o C
  • Materials :  
  • Pipe SS 316 (Non - magnetic )
  • Liner PTFE / Neoprene / Polyurethane
  • Electrode SS / Hastelloy C / Ta / Ti / Pt
  • End Connections / Flanges Carbon Steel / SS 304 / SS 316 / SS 316L
  • Coil Housing Carbon Steel / SS, Epoxy painted
  • Transmitter Cast Aluminium (LM6), Epoxy painted
  • Flange / End Connection Std. DIN / ANSI / BS / SMS / TRI-CLAMP
  • Power Supply 110 / 240V AC ± 15%, 50Hz
  • Power Consumption 20 VA
  • Cable Gland Entry 1/2" NPT (F)
  • Analog Output (Isolated) 4-20 mA DC / 0-20 mA DC
  • Pulsed Output (Optional) Low Pulsed Rate Output 10 to 36000 pulses per hour
  • Communication Port (Optional) RS - 232 / RS - 485 MODBUS RTU Protocol
  • Maximum Load Resistance 1000 Ω
  • Response Time 5 seconds 
  • Flow Velocity Range 0.3 to 10 m/s
  • Ingress Protection IP - 65 (IP - 68 on request)
  • LED Display 4 Digit Indication for Flow Rate and 8 Digit Indication for Totaliser Programming from Front Keyboard for Engineering Units
  • For Flow between 20 to 100% ± 1% of measured value (normal)
  • For Flow between 0 to 20% Refer Error Diagram below
  • Power Supply Nominal
  • Ambient Temperature 25o C + 2o C
  • Load Resistance 500 Ω
  • Effect of Ambient Temperature Less than 0.2% per 1o C
  • Effect of Power Supply Less than 0.1% per 10% Voltage variation
  • Effect of Load Resistance Less than 0.1% of span

Crystal Series 6400 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 Faradays law of Electromagnetic Induction. The meter features flanged construction and is available with choice of Liner and Electrode materials. Series 6400 has excellent accuracy and flow rangeability. The meter is suitable for use on wide range of corrosive and aggressive range of conductive liquids.

Salient FeaturesBased on Faradays law of Electromagnetic Induction.Suitable for pipe sizes of diameters 10 mm to 600 mmCoil Assembly in hermetically sealed Welded constructionChoice of PTFE / Neoprene Rubber / Polyurethane linersIntegral or Remote TransmitterField interchangable electronicsOptional LED display for Flow Rate or Totaliser indication in Engineering UnitsNo pressure lossHigh linerarity due to characteristic magnetic fieldAbsolute Zero stability and noise eliminationMeasurement independent of liquid properties

Operations

Electromagnetic Flowmeters are based on Faradays 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 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.

Applications
Chemical, Petrochemical Drug Industries Steel Industries
Process Industries Sugar Industries Mining Industries
Fertilizer Industries Beverage Industries Dredging Industries
Pharmaceutical Industry Paper and Pulp Industries Water and Waste-Water Management
Food Industry Aluminum Industries And many others
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