A brief introduction to the maintenance of the sewage flow meter when it is stopped: When the sewage flow meter is not in use when it is shut down , we must adopt scientific and reasonable protection and conservation methods for the flow meter. After the user purchases the sewage flowmeter, there will be moments when the measurement data is inaccurate. What are the factors? This is actually not the quality of the electromagnetic flowmeter, but the fact that you did not follow the instructions in the clarification book. First, the zero point of the protection of the sewage flow meter Check and adjust Before the sewage flow meter is put into operation, after the power is turned on, the zero point must be adjusted when the sewage flow sensor is filled with liquid. After the start of operation, it is also necessary to check the zero point of the operating conditions for stopping the flow regularly; in particular, for stacked, easily contaminated electrodes, solid-phase non-clean liquids, they should be checked more during the operation to obtain the experience and determine the normal viewing cycle. Electromagnetic flowmeters that communicate with the excitation method are more prone to zero-drift than square-wave ratios. Therefore, attention must be paid to viewing and adjusting. How to protect the stoppage of the sewage flowmeter ? Examples of application errors in the case of faults in two stacked layers. One is the oil drilling cementing project, the total flow of infusion cement slurry is the main technical parameters, often using high-pressure electromagnetic flowmeter. The instrument is used intermittently, and the sensor measurement tube is flushed with water after completion, and the remaining time is an empty tube. Because the cleaning is not thorough, the residual cement slurry on the inner wall of the measuring tube is solidified into a thin layer, and the insulating layer is accumulated in the past two months, covering all the external surfaces of the electrode, resulting in abnormal operation and eventually being unable to operate. The other is electrolytic cutting technology test equipment, using an electromagnetic flowmeter to control the flow of full saline, the gap after a period of use and found that the flow signal gradually weakened, the signal is zero after 2 months. The factor is that iron oxide builds up in the wall of the electrolytic cutting process and causes a short circuit. Eradication of stratification is immediately normal. Second, the timing of the protection of the sewage flow meter Check sensor electrical function How to protect the shutdown of the sewage flow meter? First, roughly measure the resistance between the electrodes. Disconnect the signal between the sensor and the transducer. The sensor is filled with liquid. Measure the resistance of the two electrodes and ground with a multimeter. Is it within the specified range of the manufacturer and the measured values ​​are approximately the same. Record the resistance value of the first measurement. This value is useful for determining the sensor's fault factors in the future (if the buildup layer is conductive, it is still insulated). Next, the sensor is vented to the liquid and the inner wall is wiped. After thorough drying, the resistance between the two electrodes and the grounding terminal is measured using a megohmmeter. Extended reading: Ming Yu controlled flow meter Battery Power Scooter,Removable Speed Scooter,Electric Speed Scooter,Speed Scooter Electric Ningbo Chenyuan Machinery Co., Ltd , https://www.cncysport.com