Abstract: far eastone metal tube rotameter scale calibration information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Because far eastone metal tube rotameter in the input pressure source and produce 4 - Between 20 ma current signal, in addition to the machinery, circuit, and with conventional method for calibration of metal tube rotor flow meter is not enough, this is determined by the transmitter structure theory. Because. More flow meter manufacturers choose model price quote you are welcome to inquire, here is far eastone metal tube rotameter scale calibration article details. Because far eastone metal tube rotameter in the input pressure source and produce 4 - Between 20 ma current signal, in addition to the machinery, circuit, and with conventional method for calibration of metal tube rotor flow meter is not enough, this is determined by the transmitter structure theory. Because the metal tube rotameter in the input pressure source and produce 4 - Between 20 ma current signal, in addition to the machinery, circuit, and microprocessor chip operation work of the input data. So calibration with conventional method. Actually manufacturer of metal tube rotameter calibrating is also have instructions due to metal tube rotameter is to separate the set-up and the parts necessary to alignment, so actual calibration according to the following steps: do a 4 - first 20 ma fine-tuning, the rectification of transmitter internal D/A converter, because it does not involve the sensing component, without external pressure signal source. Do it again the fine-tuning, 4 - 20 ma, digital readout in conformity with the actual pressure signal, so you need to pressure signal source. Do after zui reset range, 4 - by adjusting the analog output 20 ma in conformity with the additional pressure source, its role and zero (transmitter enclosure Z） , the tuning range ( R） The effect of switch is exactly the same. Some people think that, as long as with HART hands operator can change the metal tube rotor flow meter range, and can be adjusted to zero and range of work, without the need to input pressure source, but it cannot be called a calibration, can only be called & other; Set range throughout the &; 。 The real calibration is need to use a standard pressure source input transducer. Because do not use the standard and the tuning range ( LRV、URV） Not calibration, ignore the input part ( Input pressure transmitter) To adjust the output ( Conversion transmitter circuit) Calibration is not correct. Moreover pressure, differential pressure detection parts and A/D conversion circuit, the relationship between the output current is not equal, the purpose of calibration is to find the relation of the three. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.
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