|信息来源： 流量变送器制造 | 2019-05-13 点击量： 3089|
To measure the flow of liquid,should the orifice flowmeter take pressure port be placed on the upper part?Xi'an Huaheng Instrument Manufacturing Co.,Ltd.
The differential pressure tap of orifice plate flowmeter should have different pressure tapping methods according to the nature of the fluid in the pipeline,which is the same pressure tapping method as that of detecting the pressure in the pipeline.
When the fluid in the pipeline is gas,the orifice plate differential pressure intake should be 45 degrees above the central horizontal line of the pipeline,and the pressure from the top of the pipeline can also be taken.This is to prevent the liquid contained in the gas flow from entering the intake pipe,that is,the pressure guide pipe affects the accuracy of the detection.
When the fluid in the pipeline is liquid,the orifice plate differential pressure intake should be located at 45 degrees below the central horizontal line of the pipeline.This is to prevent the gas contained in the pipeline fluid from entering the pressure guide pipe and affect the accuracy of the detection.
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.