How electromagnetic flowmeter calibration scale at the scene

Abstract: how to electromagnetic flowmeter calibration scale information at the scene produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Electromagnetic flowmeter factory with its accuracy has been line calibration. But in the use of the site, due to the environmental conditions, fluid characteristics, as well as the instrument itself such as components damage reason lead to the failure of the instrument operation, etc. , to use for a long time after the flow meter is necessary. More flow meter manufacturers choose model price quote you are welcome to inquire, here's how to electromagnetic flowmeter calibration scale article details at the scene. Electromagnetic flowmeter factory with its accuracy has been line calibration. But in the use of the site, due to the environmental conditions, fluid characteristics, as well as the instrument itself such as components damage reason lead to the failure of the instrument operation, etc. , to use for a long time after the flow meter is necessary a routine calibration. Due to electromagnetic flowmeter sensor installed on the pipeline, it is difficult to remove the sent to the calibration line for inspection, and at present within the scope of the flow measurement, national and local site conditions to large diameter flowmeter has yet to file online inspection procedures and other regulations. In order to ensure that the electromagnetic flowmeter after troubleshooting and the accuracy and reliability of after use for a long time, and shall not affect the daily production, love Kurt instrument to launch the following online calibration method: 1, safety of electromagnetic flowmeter excitation coil insulation test, should be more than 20 m & Omega; 。 2, the excitation coil electromagnetic flowmeter copper resistance test, should be the same as the original factory value ( The environment temperature phase at the same time) 。 3, resistance to electromagnetic flowmeter sensor electrodes to test, if the resistance value between the 2 a 20 kf, accompanied by charge and discharge phenomenon, the resistance of the two electrodes, is that good. 4, to the test of electromagnetic flow meter transducer excitation current, the output was observed and the converter current value, the error is not more than 0. 25mA。 5, the electromagnetic flowmeter converter analog output and frequency output test, observe the change of the linear, and calculate its zui linear error, should be less than 0. 5%. 6, to the electromagnetic flowmeter, above DN1200mm should test driver stage NB, current error is not more than 12 ma. Above is my little opinion, in the process of everyone's daily use, for reference only. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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