Introduction of reasonable method for checking circuit of liquid turbine flow meter

Abstract: The introduction of reasonable methods for checking the circuit of liquid turbine flowmeters is provided by excellent flowmeter and flowmeter manufacturers and quotation manufacturers. 1. When the liquid turbine flowmeter detects the filter capacitor in the power supply, the positive and negative electrodes of the electrolytic capacitor should be short-circuited first, and the test lead wire cannot be used instead of the wire to discharge the capacitor during short-circuit, because it is easy to burn the core wire. You can get one with a light. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. 1. When the liquid turbine flowmeter detects the filter capacitor in the power supply, the positive and negative electrodes of the electrolytic capacitor should be short-circuited first, and the test lead wire cannot be used instead of the wire to discharge the capacitor during short-circuit, because it is easy to burn the core wire. You can take a 220V, 60-100W lamp with a lamp head lead and connect it to both ends of the capacitor, the bulb will flash at the moment of discharge. 2. When using the ohm block of the multimeter, remember not to measure with electricity. When using a logic pen or an oscilloscope to detect signals, be careful not to make the probe touch two measurement pins at the same time, because the essence of this situation is to form a short circuit under the condition of power-on. When overhauling the instrument fault in a humid environment, it is necessary to use a multimeter to test whether the points of the printed circuit are unobstructed, because the main fault in this case is copper foil corrosion. 3. When repairing the internal circuit of the instrument, if the contacts of the installation components and the circuit board are coated with insulating varnish, when measuring the parameters of each point, ordinary hand-stitched needles can be used to weld on the test pens of the multimeter, so as to pierce the paint layer Measure points directly without stripping paint over large areas. Various control boards and plugs cannot be plugged and unplugged with electricity. Because in the case of power-on, plugging and unplugging the control board will generate a strong induced electromotive force. At this time, the instantaneous counterattack voltage is very high, and it is easy to damage the corresponding control board and plug. 4. Do not knock or touch blindly during maintenance, so as not to expand the fault, and the more you repair, the worse it will be. When dismantling and adjusting the instrument, the original position should be recorded for restoration. Liquid Turbine Flowmeter When repairing precision instruments, if you accidentally bounce small parts, you should first determine the place where they may fly, do not look east, but look west, you can use magnet scanning and line-of-sight scanning methods to find. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Introduction to the Reasonable Method for Checking Lines of Liquid Turbine Flow Meters'

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