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TRH-L-K measuring media : flow measurement of steam and liquid, orifice flowmeter, orifice plated flow sensor

TRH-L-K measuring media : flow measurement of steam and liquid, orifice flowmeter, orifice plated flow sensor

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TRH-L-K measuring media : flow measurement of steam and liquid, orifice flowmeter, orifice plated flow sensor

The orifice flowmeter is a high-range differential pressure flow device that combines a standard orifice plate with a multi-parameter differential pressure transmitter (or differential pressure transmitter, temperature transmitter and pressure transmitter) to measure gas, The flow of steam, liquid and lead is widely used in process control and measurement in petroleum, chemical, metallurgy, electric power, heating, water supply and other fields. The throttling device, also known as the differential pressure flowmeter, is widely used in gas by a primary detecting member (throttle member) and a secondary device (differential pressure transmitter and flow rate display device). Flow measurement of steam and liquid. The utility model has the advantages of simple structure, convenient maintenance and stable performance. Introduction The orifice flowmeter is a high-range differential pressure flow device that combines a standard orifice plate with a multi-parameter differential pressure transmitter (or differential pressure transmitter, temperature transmitter and pressure transmitter) to measure gas, Flow of steam, liquid and natural gas.


application

Integrated orifice flowmeter

Integrated orifice flowmeter

Widely used in process control and measurement in petroleum, chemical, metallurgy, electric power, heating, water supply and other fields. Orifice flowmeter is widely used in various fields of the national economy such as coal, chemical industry, transportation, construction, textile, food, medicine, agriculture, environmental protection and people's daily life. It is the development of industrial and agricultural production, saving energy and improving product quality. Important tools to improve economic efficiency and management level play an important role in the national economy. In process automation instruments and devices, flow meters have two functions: as a test instrument for the process automation control system and a total meter for measuring the quantity of materials.

First, the advantages

1. The standard throttle is fully used and approved by the International Standards Organization. It can be used without actual flow calibration and is unique in the flow sensor.

2, the structure is easy to copy, simple, firm, stable and reliable performance, low price;

3, a wide range of applications, including all single-phase fluid (liquid, gas, steam), part of the mixed phase flow, the diameter of the general production process, working conditions (temperature, pressure) can be measured;

4. The test piece and the differential pressure display instrument can be separated from different manufacturers to facilitate professional scale production.



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Second, shortcomings

1. The repeatability and accuracy of the measurement are moderate in the flow sensor. Due to the intricacies of many factors, the accuracy is difficult to improve;

2, the range is narrow, because the flow coefficient is related to the Reynolds number, the general range is only 3:1 ~ 4:1;

3. There is a long straight pipe length requirement, which is generally difficult to meet. Especially for larger pipe diameters, the problem is more prominent;

4, the pressure loss is large;

5, the orifice plate with the acute angle of the inner hole to ensure the accuracy, so the sensor is sensitive to corrosion, wear, scaling, dirt, long-term use accuracy is difficult to guarantee, need to remove the strong inspection once a year;

6, the use of flange connection, easy to run, run, drip, leak problems, greatly increased the maintenance workload.

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