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1. Flow rate of electromagnetic flowmeter
The flow calculation and selection of electromagnetic flowmeter should focus on the pipe diameter, flow velocity, and magnetic field strength. It is recommended to maintain the flow rate value above 50% of the full range under normal operating conditions.
1. Analysis of Flow Calculation Formula 1 Basic formula: The core principle is based on $E=k \ cdot B \ cdot v \ cdot D $, where the induced electromotive force $E $is proportional to the magnetic induction intensity $B $, flow velocity $v $, and pipe diameter $D $
2. Flow formula variant: - $Q=k \ cdot B \ cdot D \ cdot v $is a direct expression, $Q $represents volumetric flow rate, and the unit is usually $m ³/h $or $L/s. -$Q=3600 \ times V \ times S $is a simplified engineering formula, $V $is the average flow velocity (m/s), $S=π D ²/4 $is the cross-sectional area of the conduit, which is suitable for fast calculation.
2. Measurement Range and Selection Principles 1 Flow rate range: Conventional electromagnetic flow meters support flow rates of 0.5-15m/s, with a range ratio of 150:1, and high adaptability to cover micro flow to high flow rate scenarios. Range configuration: It is necessary to ensure that the nominal range Q is greater than the actual maximum flow rate, and the ideal operating flow rate value is 50%~80% of the full range to avoid accuracy degradation caused by low flow rates.
III. Examples of correspondence between pipe diameter and flow rate Taking two typical diameters as examples: • Small diameter (10mm): minimum flow rate of 0.03m ³/h, maximum flow rate of 4.24m ³/h, suitable for detailed flow monitoring.
. Medium caliber (100mm): covering 2.82~424m ³/h, suitable f_600x400.jpg)
2. What are the measurement ranges of electromagnetic flow meters?
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. Weight of DN125 electromagnetic flowmeter
The weight range of DN125 electromagnetic flowmeter is generally 22.08~441.56kg (reference value) 1 The main cause of weight fluctuations is the material, structural design, and additional configurations of the flow meter, which are the main factors leading to weight differences. For example, the body made of st