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3 special testing contents to ensure the normal operation of electromagnetic flow meters

Due to various reasons, some large diameter flowmeters used online can not be tested off-line. It has become an urgent problem to study an online calibration method which is both scientific and effective and ADAPTS to the needs of the field. At present, there are three common methods for online calibration of electromagnetic flowmeters:

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Liquid level drop method

Using the pool as a measuring vessel, the volume is calculated by measuring the water level of the pool, and the flowmeter is calibrated. Before calibration, it is necessary to determine whether there is an unknown pipeline between the calibrated flowmeter and the pool, and the pool construction should ensure a certain accuracy, otherwise the calibration results will be large error.

On-line comparison method

The ultrasonic flowmeter is used as the standard meter, and the flowmeter is connected in series. The accuracy of the flowmeter is determined by comparison. When using, it should be noted that the standard table needs to have a valid verification certificate, and pass the measurement standard examination to obtain the social public measurement certificate; The site conditions should meet the requirements, and the calibrator should operate in strict accordance with the specifications.

Method of detecting electrical parameters

Connect the testing equipment with the on-line calibrated flowmeter, and determine whether the flowmeter meets the use requirements through testing and analysis. This method can detect both inside and without water in the pipeline, but only electromagnetic flowmeters can be detected.

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    More Electromagnetic Flow Meter

    electromagnetic flowmeters have emerged as indispensable tools for industries that demand accurate and reliable flow measurements. Their advanced technology, coupled with the ability to operate in diverse environments and handle various conductive liquids, positions them as a preferred choice in applications ranging from water management to chemical processing. As technology continues to evolve, electromagnetic flowmeters are likely to witness further advancements, contributing to increased efficiency and precision in liquid flow measurement across different sectors.

    Size: DN3-DN3000mm
    Nominal Pressure: 0.6-1.6Mpa(2.5Mpa/4.0Mpa/6.4Mpa… Max 42Mpa)
    Accuracy: +/-0.5%(Standard) +/-0.3% or +/-0.2%(Optional)
    Liner: PTFE, Neoprene, Hard Rubber, EPDM, FEP, Polyurethane, PFA
    Electrode: SUS316L, Hastelloy B, Hastelloy C Titanium, Tantalum, Platinium-iridium
    Structure Type: Integral type, remote type, submersible type, ex-proof type
    Medium Temperature: -20~+60 degC(Integral type)
    Remote type ( Neoprene ,Hard Rubber ,Polyurethane ,EPDM) -10~+80degC
    Remote type(PTFE/PFA/FEP) -10~+160degC
    Ambient Temperature: -20~+60deg C
    Ambient Humidity: 5-100%RH(relative humidity)
    Measuring Range: Max 15m/s
    Conductivity: >5us/cm
    Protection Class: IP65(Standard); IP68(Optional for remote type)
    Process Connection: Flange (Standard), Wafer, Thread, Tri-clamp etc (Optional)
    Output Signal: 4-20mA/Pulse
    Communication: RS485(Standard), HART(Optional),GPRS/GSM (Optional)
    Power Supply: AC220V (can be used for AC85-250V)
    DC24V (can be used for DC20-36V)
    DC12V (optional), Battery Powered 3.6V (optional)
    Power Consumption: <20W Alarm: Upper Limit Alarm / Lower Limit Alarm Self-diagnosis: Empty Pipe Alarm, Exciting Alarm Explosion Proof: ATEX