| 孔板流量計和噴嘴流量計優缺點有哪些？ |
| 信息來源： 流量變送器 | 2019-04-25 點擊量： 6037 |
孔板流量計和噴嘴流量計優缺點有哪些?孔板和噴嘴流量計是兩種不同的差壓式流量計，西安華恒儀表介紹：
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.
孔板流量計按國標規定進行設計、制造和檢定的標準孔板無需實流標定，精度高、結構簡單、制造成本低，但壓力損失在所有標準節流裝置中最大，不適用于要求壓力損失小的情況，標準孔板廣泛用于石油、化工、冶金、電力等行業。
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.
1.噴嘴流量計
優點：標準噴嘴歷史悠久，有大量的各種試驗數據，噴嘴流量計結構簡單牢固，無可動部件、長期使用穩定可靠，豐富的設計制造和應用經驗，標準化程度高，可不必進行實流標定。標準噴嘴有可靠的實驗數據和完善的國際、國家標準。計量數據真實可信，可作為貿易結算計量用表。
缺點：生產制造較復雜，單價較高.
1.Nozzle flowmeter
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.
2.孔板
孔板流量計優點：性價比較高。標準孔板歷史悠久，有國際、國家標準及檢定規程和大量的試驗數據，不用實流標定。計量數據真實可信，可作為貿易結算計量用表。
缺點：孔板銳角邊的磨損、臟污等因素均會影響計量精度。檢定周期較短6-12個月。
2.orifice plate
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
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