Fault inquiry of electromagnetic flowmeter

Fault query of electromagnetic flowmeter. The converter of electromagnetic flowmeter has the function of self-diagnosis. In the state of automatic measurement and control system, the alarm information can be searched by keys.

1. No display information of the instrument

 

Check whether the power supply is connected, check whether the power fuse is in good condition, check whether the power supply voltage conforms to the regulations, and check whether the LCD splicing screen is connected.

 

2. Air traffic control alarm

 

Accurately measure whether the hydrodynamics is full of the controller and accurately measure the tube. Use a wire to short-circuit the converter signal input terminals SIG1, SIG2 and ground. At this point, if the "empty tube" changes to "full tube", it indicates that the converter is normal.Check if the power cord is correct and if there is a ground wire (in this case, the ground of the liquid being measured).Check whether the controller electrode is normal and make the flow rate zero. Observe that the conductance ratio of the display information should be less than 100%. In the case of flow rate, the resistor SIG1 and SIG2 of SIGGND should be less than 50K.Zui USES a pointer multimeter to accurately measure, and can see the battery charging phenomenon).Accurate measurement of dc voltage between DS1 and DS2 with a multimeter should be less than 1V, otherwise the controller electrode is contaminated and should be cleaned.

 

3. Accurately measured flow is not accurate

 

The electromagnetic flowmeter accurately measures whether the fluid dynamics is filled with the controller and whether the power cord is connected properly.Check the controller coefficient, whether the zero of the controller is set according to the sign of the controller or the check sheet back to the factory

 

Shanghai porcelain city has a lot of technical accumulation, so it can also customize the flow meter according to customer requirements, the design department can interact within 3 weeks, which is even faster than the delivery of foreign standard flow meter.Major application areas include metrology, hydraulic or supervisory technology, filling, glue or the monitoring of mixing ratios in a variety of industrial sectors.Shanghai porcelain flow meters are used in plastics, polyurethane, chemical, pharmaceutical, paint and coatings, hydraulic and automotive processing plants and two-component processes worldwide.

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