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Introduced the electromagnetic flowmeter, ultrasonic flowmeter, liquid level transmitter and shown negative solution

by:KAIDI     2020-10-27
Instrument such as the intelligent electromagnetic flowmeter, ultrasonic flowmeter products such as the use of more and more big, problems and the corresponding increase in the production, today embellish instrument technology co. , LTD. Technical personnel for the two commonly used flow meter and liquid level transmitter will encounter in the use of several negative situation, make a analysis and corresponding solutions. One, the intelligent electromagnetic flowmeter RZ - LD intelligent electromagnetic flowmeter is based on Faraday's law of electromagnetic induction, by measuring the conductive fluid in the magnetic field induction electromotive force to calculate fluid flow. Intelligent electromagnetic flowmeter in the practical production shows that negative reason and solution: 1, didn't mark by flow sensor installation, measured in the opposite direction. Methods: to install. 2, the sensor signal lines, due to the intelligent electromagnetic flowmeter to the positive and negative function of the flow measurement, shows the reverse flow. Methods: will signal exchange. 3, measuring pipe hollow tubes or not tube, there is a gas. The meter will show a negative number or flow value, big and small. Methods: full of measured medium, make the pipe flow meter for measuring. Second, the ultrasonic flowmeter RZ - 1158 c is a kind of time difference ultrasonic flowmeter, we use in our daily ultrasonic flow timing may appear flowmeter showed negative phenomenon, this basically is the following causes 1, table is likely to put card installed backwards, backwards or upstream and downstream probe solution: reinstall; 2, measuring pipe hollow tubes or not tube, there is a gas. The meter will show a negative number or flow value, big and small. Solution: make the pipe full of measured medium, flow meter for measuring; 3, may forget to shut down or table into the zero calibration, solution: change or reset directly from set up the food; 4, table software has a problem. Your table is not a two-way table may watch program insanity. Solution: get * * the factory personnel to repair. Three, liquid level transmitter, liquid level transmitter of the readings for the negative solution is as follows: * ure is without negative pressure chamber under pressure: 1, the pressure chamber of the membrane in the same height, then to zero. Output is 4 ma. 2, the distance between the positive and negative pressure chamber is equal to the actual measurement of liquid level of the distance between two flanges and then adjusting the migration. Is negative transfer, Migration amount for P = & rho; gh) So put double flange installation between two flanges. This table is accurate. In this paper, by sorting.
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