Electromagnetic meter must be continuous use online

Due to electromagnetic meter must be on-line continuous use, it is almost impossible to dismantle and transport to national metrology testing center for verification. Therefore, for the use of large diameter electromagnetic meter accuracy verification is necessary. The precision of electromagnetic meter verification for the management of the electromagnetic meter, ensure the accuracy and reliability of primitive accumulation than data, do the validation and check it is also useful in the future. The precision of electromagnetic meter can use clear water reserviors volume and electromagnetic meter calibration equipment.

The comprehensive verification on the accuracy of electromagnetic meter, in order to determine the precision of electromagnetic meter in waterworks application process, to ensure that whether authentic or replace the electromagnetic meter measurement data. Using visual method and the instrument method, using GS8 check sensor excitation coil resistance, the insulation resistance between line and ground resistance project conform to the standard of before delivery, electromagnetic flow meter transducer zero point and output current, whether meet the accuracy requirement.

To assess the effect of electromagnetic meter to its external environment, such as excitation line and line the same pipeline laying, excitation line and signal line with high voltage cable parallel, surrounded by factors such as large transformer or motor to evaluate the effect of electromagnetic meter operation precision, this assessment is mainly by using the method of visual observation of the running status of electromagnetic meter with and without mutation or fluctuations have approximately determining electromagnetic meter by the electromagnetic wave or other stray wave interference or whether there is a bubble in the pipeline.

The connecting way of electromagnetic meter

Even if we know the definition of electromagnetic meter, purposes, but the most important thing is that, in the actual application, we also need to know what are its link way:

1, the threaded connection: the connection mode is commonly used in medical, food, oil, and other fields.

2, flange connection, it can be installed in a one-way, general application of small pipes. This is due to the electromagnetic meter has can be connected at both ends of the flange, so when connected to the pipe, as long as the good bolted flange and pipe flange is ok.

3, clamp connections: using this method, not only can be quickly installed, remove the electromagnetic meter, at the same time also convenient for its cleaning and maintenance.

4, clamp connections: this approach is generally used in electromagnetic meter without flange connection, its connection mode is simple, as long as the general staff can know its installation method are analyzed, less trouble.