『Differential pressure flowmeter orifice plate』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
1. The simplest three steps for trading orifice plate differential pressure flowmeter are: obtaining supplier qualifications, completing product compliance certification, signing contracts, and arranging logistics. 1. Supplier qualification confirmation: Contact the manufacturers of Jilenchang orifice flow meters (such as Xian Automation Instrument Factory and Chongqing Chuanyi) to obtain a business license, medical device registration certificate (if used for medical purposes), and manufacturing measuring instrument license. It is necessary to verify whether the manufacturer complies with the GB/T 2624-2006 standard and ISO 9001 quality system. 2. Product compliance certification requires the supplier to provide a factory inspection certificate and a third-party calibration report (such as issued by the China Institute of Testing and Technology) to ensure that the accuracy level of the flowmeter (commonly 0.5 or 1.0) meets the contract requirements. If export requires CE certification (EU) or API certification (petroleum industry)
3. When signing the contract with logistics, clearly define the measurement performance parameters (range ratio, repeatability error), material requirements (commonly used 316 stainless steel for orifice plates), and after-sales service terms. Logistics should use shockproof packaging and check the consistency between the shipping list and the ordered model before shipment. Attention: Be cautious of suppliers without production licenses for measuring instruments in trade, and avoid purchasing products that do not comply with GB/T 2624 standards. If it involves steam flow measurement, an additional temperature and pressure compensation scheme is required.
2. Relationship betwe
Proportional relationship. Differential pressure is the value at which the pressure of the fluid decreases before and after passing through the orifice plate. The differential pressure at the beginning of the orifice plate is proportional to the pressure loss, and the greater the differential pressure, the greater the pressure loss of the orifice plate flowmeter; Conversely, the smaller. The working principle of orifice plate differential pressure flowmeter is based on Bernoullis theorem and continuity equation.
3. Development process of orifice flowmeter
The development process of orifice flowmeter can be summarized as the following stages: The origin of ancient flow measurement: Since the time of Caesar in ancient Rome, flow measurement has been closely related to hydraulic engineering.
. Around 1000 BC, the ancient Egyptians measured the flow of the Nile River using the weir method, demonstrating their initial exploration of flow measurement. The foundation of modern flow measurement technology: In the 17th century, Torricellis theory laid the foundation for differential pressure flow meters, which was an important milestone in the field of flow measurement. 18、 In the 19th century, with the advancement of science and technology, various types of flow meters began to emerge, such as weirs, tracer methods, pitot tubes, Venturi tubes, etc. The prototypes of these meters marked the innovation of flow measurement technology. The rapid development of flow meters in the 20th century: In the 20th century, with the increasing demand for process flow meters in industry, energy metering, and urban utilities, flow meters developed rapidly. T
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