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News

Home News What are the factors to choose a flow me...

Flowmeter quality and service life Many consumers do not know the quality and service life of flow meters.

Choosing the right instrument panel model is the top priority for ensuring the life and accuracy of the flowmeter. Pay attention to the options of negative pressure and high temperature resistance. The negative pressure of the flow meter is the pressure test level. This value should be slightly higher than the pressure of the measured medium. Generally, a value of 1 to 25 times can ensure that leakage or accidents are not easy to occur. The selected measurement range category is the limit of the gauge of the instrument panel. Larger selections will reduce the accuracy of the measurement. Smaller selections are very easy to load and destroy the flowmeter. Should be elected in the specific operation ** the total flow of 1.2-1.33 times. Because the measured medium is different, the life of the flowmeter will be reduced. Here also remind everyone to use suitable materials. Let's compare the two typical cases in the medium with the electromagnetic flowmeter.

1. Medium: drilling mud, slurry, wastewater. 

This kind of medium cannot be measured with a throttling device. Due to the poor fluidity, there are small blocks inside, and the stone is very easy to block and high loss. If you use an electromagnetic flowmeter, pay attention to the choice of lining and electrodes. The lining must be wear-resistant and ductile. Polyurethane vulcanized rubber lining is the best choice. The electrode is 316L electrode.

2. Medium: boiling sulfuric acid, hydrochloric acid, sulfuric acid and various solvents.

Such high-corrosive media throttling devices and vortex flow meters are not suitable for measurement. Because the cost of engineering cost is too high and unstable. The electromagnetic flowmeter is lined with polytetrafluoroethylene, and the electrode uses a tantalum electrode, which can consider the requirements of the left and right measurement media. However, make sure that the installation must exceed the specifications. If infiltration leakage occurs, it will endanger the service life of the flowmeter.


Product Categories

  • Shanghai Automation Instrumentation No. 3 Factory
    • Thermocouples
    • Thermal resistance
    • Bimetal thermometer
    • Temperature transmitter
    • Non-contact thermometer
  • Shanghai Automation Instrumentation No. 4 Factory
    • Pressure guages
    • Pressure transmitters
    • pressure controllers
  • Shanghai Far East Instrumentation Factory
  • Shanghai Automation Instrumentation No. 5 Factory
    • Ultrasonic Level Meter
    • Magnetic Level Gauge
    • Magnetostrictive Liquid Level Transmitter
    • Radar Level Meter
    • Electric Float Level Transmitter
    • Floating Ball Level Meter
    • Floating Ball Liquid Level Switch
    • Radio frequency admittance switch
    • Input-Type Liquid Level Transmitter
    • Tuning Fork Level Switch
    • Intelligent Radar Level Meter
    • Resistance level switch
  • Shanghai No. 9 Automation Instrumentation Co., Ltd.
    • Electromagnetic Flowmeter
    • V-Cone Flowmeter
    • Glass Rotor Flowmeter
    • Metal Tube Rotor Flowmeter
    • Throttling Device
    • Ellipse Flowmeter
    • Vortex Flowmeter
    • Turbine Flowmeter
    • Wedge Flowmeter
    • Sliding vane flowmeter
    • Roots flowmeter
    • Flow Switch
  • Shanghai Automation Instrumentation No. 11 Factory
    • Electric Actuator
    • electric-pneumatic valve positioner
    • angle electric actuator
    • Intelligent electric actuator
  • Shanghai Automation Instrumentation No. 7 Factory
    • Electric control valve
    • Pneumatic control valve
  • Shanghai Automation Instrumentation Co., Ltd.
  • Shanghai ZiYi Marine Instrument Co.,Ltd
    • Frequency Meter
    • Ammeter
    • Power Factor Meter
    • Voltmeter
    • Current voltmeter
    • Controllable Voltage Regulator
    • Megger
  • Shanghai Automation Instrument Tachometer and Instrument Motor CO.,LTD
    • Fixed magnetic tachometer
    • Handheld centrifugal tachometer
    • Rotating speed digital displayer
    • Electric tachometer
    • Non-contact handheld digital tachometer
    • Standard speed generator
  • Shanghai Dahua Instrument Factory
    • Automatic balanced recorder
    • Circular chart recorder
    • Intelligent digital display regulator
    • Intelligent data logging device
  • Shanghai Hua Dong Electronic Instrument Factory
    • Weighing sensor
    • Weighing controller
    • Weighing amplifier
    • Weighting Resistance Strain Meter

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