SM7000-IFM electromagnetic flowmeter functional advantages

Case introduction

Functional advantages of SM7000-IFM electromagnetic flowmeter

German IFM electromagnetic circuit system: its function is to generate a uniform DC or AC magnetic field. The DC magnetic circuit is implemented with magnets. Its advantage is that the structure is relatively simple and is less disturbed by the AC magnetic field. However, it easily polarizes the electrolyte liquid passing through the measurement catheter, causing the positive electrode to be surrounded by negative ions and the negative electrode to be surrounded by positive ions. , that is, the polarization phenomenon of the electrodes, and causes the internal resistance between the two electrodes to increase, thus seriously affecting the normal operation of the instrument.

When the diameter of the pipe is large, the magnet is correspondingly large, bulky and uneconomical. Therefore, electromagnetic flowmeters generally use alternating magnetic fields and are generated by 50HZ power frequency power supply. Measuring catheter: Its function is to allow the conductive liquid to be measured to pass through. In order to cause the magnetic flux to be shunted or short-circuited when the magnetic field lines pass through the measuring conduit, the measuring conduit must be made of materials that are non-magnetic, have low electrical conductivity, low thermal conductivity and have a certain mechanical strength. Non-magnetic stainless steel, glass fiber reinforced plastics, and high-strength materials can be used. Plastic, aluminum, etc. Electrode: Its function is to elicit an induced potential signal that is proportional to the measured value. The electrodes are generally made of non-magnetic stainless steel and are required to be flush with the lining so that fluid can pass through unimpeded. Its installation position should be in the vertical direction of the pipe to prevent sediment from accumulating on it and affecting the measurement accuracy.

SM7000- IFM electromagnetic flowmeter function advantages German IFM ifm electromagnetic flowmeter product application application adder function; for industrial application installation through an adapter to connect the pipe medium conductive liquid; water; water is the basic medium Medien conductivity: ≥ 20 ?S/ cm Viscosity: < 70 mm?/s (40 °C) Medium temperature [°C] -10...70 Compressive strength [bar] 16 Electrical data Operating voltage [V] 18...30 DC; (in accordance with EN 50178 SELV/PELV standard) Current consumption [mA] 95; (24 V) Protection class III Reverse protection is start-up delay time [s] 5 input input counter reset output output number 2 output signal switching signal; analog signal; pulse signal; IO-Link; (configurable) Number of digital outputs 2 Output function normally open/normally closed; (parameter configurable) Maximum switching output DC voltage drop [V] 2 Continuous current load of switching output DC [mA] 200 Analog output quantity 1 Analog current output [mA] 4...20; (Adjustable range) Load maximum value [Ω] 500 Analog voltage output [V] 0...10; (Adjustable range) Load resistance max Minimum value [Ω] 2000 pulse output flow meter electrical design PNP/NPN short circuit protection yes short circuit protection type pulse overload protection yes measurement/setting range measurement range 0.2...50 l/min 0.01...3 m?/h display range -60.. .60 l/min -3.6...3.6 m?/h Resolution 0.1 l/min 0.001 m?/h Switching point, SP 0.5...50 l/min 0.027...3 m?/h Reset point, rP 0.2...49.8 l/min 0.012...2.985 m?/h starting value of measured value, ASP 0...40 l/min 0...2.4 m?/h end of measured value, AEP 10...50 l/min 0.6...3 m?/h step 0.1 l/min 0.001 m?/h SM7000-IFM electromagnetic flowmeter functional advantages