W. k. che electromagnetic flowmeter calibration scale

Abstract: the scale w. k. che electromagnetic flowmeter calibration information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Changzhou into feng factory for 30 years, has been in the study, has been in progress, learning advanced foreign instrumentation equipment and technology, the introduction of advanced technology, and then on the basis of the research and development of their new technology, combined with the requirements of customers, innovative products, meet customer requirements. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a scale w. k. che electromagnetic flowmeter calibration article details. Factory for 30 years, has been learning, has been in progress, learning advanced foreign instrumentation equipment and technology, the introduction of advanced technology, and then based on the research and development of new technology, combined with the requirements of customers innovative products that meet customer needs, meet the requirements of customers, the pursuit of perfect quality, technical breakthroughs. One, electromagnetic flowmeter calibration and performance evaluation instrument calibration point when general rules for calibration point: for class A instrument, calibration point should include qmin, 0. 07qmax,0. 15 qmax, 0。 25 qmax, 0。 4 qmax, 0。 7 qmax and qmax, when after several calibration point flow is less than qmin, this calibration point can be neglected. For class B instrument ( Refers to the output analog signal or can be directly display instantaneous flow of electromagnetic flow meter) , calibration point should be at least five, including qmin and qmax check point, and uniform distribution. Each measurement time should be not less than device allows zui short measurement time, zui short time should not less than 30 s, and the class A instrument ( Refers to the electromagnetic flowmeter with frequency output, plug-in electromagnetic flowmeter with a frequency output) Should guarantee a verification of the flow meter of the output pulse number were found in absolute value relative error is not more than 1/3 of the flowmeter repeatability. The assessment instrument performance calibration ( Such as factory factory calibration) When regulation is a major on time. Second, the number of calibration and calibration cycle, calibration cycle: verification regulation JJG198-94 'speed flowmeter verification regulation' regulation accuracy is 0. 1, 0. 2, 0. Level 5 meter, the calibration cycle for half a year. The accuracy of less than 0. Level 5 of the electromagnetic flowmeter, general calibration cycle for two years, also have a long period. In addition, some places in practice to strictly according to procedures to do very difficult. For example, large diameter electromagnetic flowmeter installation disassembly difficulty, in fact it is hard to realize in the periodical calibration flow calibration, often using online periodic verification and inspection. Standard number: each calibration point calibration at least three times. To zero. Level 1, 0. Level 2 meter, each calibration point calibration at least six times. 3, calibration step 1. According to the calibration experiment of pipe diameter and the size of the flow, choose the corresponding pump; 2. If use compressed air to power system, open air compressor, air pressure meet the system requirements, to ensure that the commutator of the normal work of the fast switching and clamp table; 3. Flow meter installed correctly after on-line, shall, in accordance with requirements of the verification regulation of electricity preheating about 30 min; 4. Such as the high water tank, should check whether the overflow signal voltage towers to. Before the formal test, should be in accordance with the requirements of verification regulation with the verification medium in the pipeline system cycle time, at the same time check the sealing parts in line with and without leakage phenomenon; 5. Before starting formal verification, should make verification medium detected flowmeter sensors, and downstream shutoff valve and zero adjustment; 6. , at the beginning of the test should be open front-end pipeline valve, slowly open the valve after checked flowmeter, flow to adjust the check point. 7. In the process of calibration, the point of each traffic flow stability should be within 1% ~ 2% & ndash; — Flow method and the total law can be within 5%. At the completion of a flow point of verification process verification medium temperature should be not more than 1 ℃, when complete verification process, should be no more than 5 ℃. Detected flowmeter downstream pressure should be high enough, in order to make sure the flow (in the pipeline Especially in reducing short) Does not occur the phenomenon such as flash gas hole; 8. Every time after the test, should first will test front-end pipeline valve is closed, then stop the pump, so as to avoid empty will be regulated facilities. At the same time must take the rest of the verification of the test line of medium are empty, zui closed after control system and air compressor. Electromagnetic flowmeter, the domestic high-end brand flow meter, in order to meet the needs of customers first, quality oriented, let customers use the rest assured. Electromagnetic flowmeter reputation in the industry and customer feedback is satisfying: high precision, durable, long service life, low failure rate, good after-sales service. These are for our customer evaluation, the customer the affirmation, is the power of our progress, efforts to develop new technology, improve the performance of our products with good quality materials, meticulous quality of product, to ensure that yield detection qualified rate 100%. , only do high-quality goods, customer satisfaction is our motivation. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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