|信息来源： 流量变送器 | 2019-04-25 点击量： 1463|
What are the advantages and disadvantages of orifice plate flowmeter and nozzle flowmeter?Orifice plate flowmeter and nozzle flowmeter are two different differential pressure flowmeters.
The orifice plate flowmeter designed,manufactured and calibrated according to the national standard does not need real-flow calibration.It has high accuracy,simple structure and low manufacturing cost.However,the pressure loss is the largest in all standard throttling devices,and it is not suitable for situations requiring low pressure loss.The standard orifice plate is widely used in petroleum,chemical,metallurgical,power and other industries.
Advantages:Standard nozzle has a long history,a large number of test data,simple and solid structure of nozzle flowmeter,no movable parts,stable and reliable long-term use,rich experience in design,manufacture and application,high degree of standardization,no need to carry out current calibration.Standard nozzles have reliable experimental data and perfect international and national standards.The measurement data are authentic and credible,and can be used as a measurement table for trade settlement.
Disadvantage:The production and manufacture are complex and the unit price is high.
Orifice plate flowmeter has the advantage of high cost performance.Standard orifice plate has a long history.It has international and national standards,verification rules and a large number of test data,and does not need real-flow calibration.The measurement data are authentic and credible,and can be used as a measurement table for trade settlement.
Disadvantage:The wear and dirt on the sharp edge of orifice plate will affect the measurement accuracy.Shorter verification period 6-12 months