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1. Electromagnetic flowmeter can measure pure water, but attention should be paid to the lower limit of conductivity and installation conditions The measurement principle and applicability of electromagnetic flowmeter work based on Faradays law of electromagnetic induction, requiring the fluid to have a minimum conductivity (usually ≥ 5 μ S/cm). The conductivity of pure water is extremely low (about 0.055 μ S/cm), which is lower than the minimum required value for most land-based electromagnetic flow meters. Ultra low conductivity specialized electromagnetic flow meters (such as the Cologne OPTIFLUX 2300 series, E+H Promag series) are required, with a conductivity threshold that can be reduced to 1 μ S/cm
2. Key implementation parameters for stove lifting - Conductivity threshold: must be ≤ 1 μ S/cm - Diameter range: DN15-DN200- Accuracy level: 0.5% to 1.0% (requires on-site calibration) - Electrode material: titanium/tantalum electrode (corrosion-resistant) - Grounding requirements: a dedicated grounding ring must be configured 3 Installation precautions: When measuring pure water, ensure that the pipe is fully filled and firmly grounded. It is recommended to use PTFE material for the pipe lining. Note that pure water is prone to polarization when flowing in pipelines, and it is necessary to choose a model with polarization voltage compensation function. Alternative solution: If the conductivity continues to be below 1 μ S/cm, it is recommended to use a Coriolis mass flowmeter (such as Emerson Micro Motion series), whose measurement accuracy is not affected by conductivity, but the cost is high and the pressure loss is large. (Note: The above technical parameters are based on the latest product manuals of main
2. What are the measurement ranges of electromagnetic flowmeters?
1、 Electromagnetic flowmeter is a very sensitive flowmeter that can measure the flow rate of conductive liquids. It is also economical and has a diameter of generally DN10-- DN2000. It can measure sewage or corrosive liquids and has a wide range of applications;
2、 Electromagnetic flow meters can only measure volumetric flow rates, with units such as m3/h (cubic meters/hour), L/min (liters/minute), etc. They have pure grinding instantaneous flow rate display and cumulative flow rate display;
3、 The measurement range corresponding to electromagnetic flow meters of different diameters is: (unit: m3/h): DN10:0.03-4.24; DN15：0.06---9.54； DN20：0.12---16.96； DN25：0.18---26.5； DN32：0.29---43.42； DN40：0.45---67.85； DN50：0.7---106； DN65
1.19---179； DN80
1.8---271； DN100：2.28---424； DN125：4.41---662.。。。。。 For more detailed information, please refer to the technical article on the website of Shandong Qiangsheng Automation Technology Co., Ltd.... Www.qszdh.com
3. There are several types of flow meters.
1. Differential pressure flow meters are based on the pressure difference generated by throttling devices (such as orifice plates and nozzles) to measure flow. They have a simple structure and wide application, but have limitations in terms of significant pressure loss and are suitable for conventional fluid monitoring scenarios. two Electromagnetic flowmeter uses Faradays law of electromagnetic induction to measure the flow rate of conductive liquids, with high ac
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