Why electromagnetic flowmeter to maintain regular detection sensor of electricity

Many companies will find that when the electromagnetic flowmeter temporarily when not in use, measurement data is not accurate. This is not the quality problem of the electromagnetic flowmeter, it is because the user is not in the correct way to maintenance electromagnetic flowmeter. So, how to maintain the unused electromagnetic flowmeter? One, zero check and adjustment before put into use in the electromagnetic flow meter, electromagnetic flow sensor must be filled with liquid and electrostatic after adjust the zero point. After the operation, it is necessary to check the conditions of use periodically stop for zero check; Especially for the settlement of the electrode and pollution, should check with solid phase in the initial phase of the cleaning fluid, for sure normal inspection cycle of experience. Ac excitation type electromagnetic flowmeter and rectangular wave excitation is more prone to zero drift, so you need to pay attention to check and adjust. Electromagnetic flow meter below we will illustrate the two examples of the electromagnetic flowmeter failure. * oil drilling and cementing project. The total capacity of the slurry is an important process parameters, usually use high voltage electromagnetic flowmeter. Instrument intermittent use. After use, rinse the sensor measuring tube, the rest of the time is empty. Due to not completely clean, the measuring tube wall cement solidified into a thin layer of residual accumulation in the past two months form the insulating layer, covering the entire surface of the electrode, lead to abnormal operation and * eventually failed. The second is the electrolytic cutting process inspection device. The flow rate of the electromagnetic flowmeter is used to control the saturated brine. Use after a period of time, traffic signals, two months after the signal is zero. Reason is that in the electrolytic iron oxide deposition on the pipe wall during cutting, cause a short-circuit. Clear layered returned to normal immediately. Electromagnetic flowmeter, electromagnetic flowmeter maintenance detection sensor electrical properties 1 on a regular basis. A rough measure resistance between the electrodes. Disconnect signals between sensors and switches. The sensor is full of liquid. A multimeter is used to measure the two electrodes and the resistance of the ground. It is specified in the manufacturer's range, measured values are roughly the same. Record * measuring resistance value. This value can be used to determine the cause of the sensor ( For example, the sediment is conducting or insulating) 。 2. Empty sensor and wipe the walls. After fully dry, with a megger measure resistance between two electrodes and the earthing terminal. 3. Check the insulation resistance of the excitation coil remove the sensor excitation coil, the terminal connected to the inverter, the coil is measured with a megger insulation resistance. No matter what kind of equipment, only installed correctly, can use. During the installation process, always appear all sorts of problems, electromagnetic flowmeter is no exception. Electromagnetic flowmeter with high stability, generally speaking, rarely appear some fault. But one thing to remind: the change of environmental conditions, and restrictions on the installation conditions, can lead to some problems. So, what are the cause of electromagnetic flowmeter test is not accurate? （ 1) Electromagnetic flowmeter is requirements for pipeline. The requirements of the straight section of pipe is very high. In the design of new water plant can be as much as possible to meet. For the renovation of the old plant and installation, hope to become difficult to meet the above conditions, this will affect the stability of the equipment. The solution of the problem is to add rectifier to improve flow characteristics. （ 2) Secondly, if the measurement of water flow is too low, will affect the accuracy of measurement, especially the border of flow meter installed in some areas. Due to it, at the end of the regional network company, and the pressure difference is very small, too much traffic. Low. For the solution, try to open the valve on both sides of the border to improve. Electromagnetic flowmeter ( 3) Similarly, when a gas in the pipeline, will cause measuring volatility and instability. If we want to fight for it, we must find out the source of the gas and solve it. If necessary, we can install the exhaust valve in the pipeline. （ 4) Installed on the sensor electrode surface in the raw water pipeline is sludge sediment pollution, and to measure the shape. Solution is to use scraper electrodes, regular maintenance and cleaning. （ 5) Electromagnetic flowmeter foreign matter accumulation in inlet pipe. Lateral water flow characteristics of sudden changes lead to big error of measurement accuracy. Solution is to eliminate accumulation of foreign body in the pipeline in a timely manner. （ 6) Lightning leads to damage of electromagnetic flow meter transducer to measure. Solution is respectively in the signal input, excitation current input and makes the corresponding installation work power source. The above is the cause of electromagnetic flowmeter test is not accurate. When we found the problem, to find the root cause of the problem, fundamentally solve the problem, so to ensure the normal use.

Over the years, has become very popular as more and more people are trying it out.

Beijing Sincerity Automatic Equipment Co., Ltd builds value for our investors through the strength of our customers’ satisfaction and by consistently producing superior operating results.

Visit Sincerity Flow Meter for the best in u shape coriolis mass flow meter mass flow meter supplies and get the most cost effective for your mass flow meter solution. Design and customization are also welcomed.

To stay in contact for latest review of mass flow meter fork density meter manufacturer across the globe and find out quality products, just go to Sincerity Flow Meter.