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technical article
Metal tube float flow detection features
2011-12-21 17:00:33

Detection principle


检测部分是由一个自下向上扩张的垂直锥形管和一个沿着锥形管轴可以上下自由移动的浮子组成。 The detection part of the metal tube float flowmeter is composed of a vertically conical tube that expands from the bottom up and a float that can move freely up and down along the axis of the conical tube. working principle,

When the measured fluid passes from the bottom to the ring gap formed by the cone tube and the float, a differential pressure is generated at the upper and lower ends of the float to form the rising force of the float.

The float rises, and the area of the annulus increases. The flow velocity of the fluid at the annulus immediately decreases, and the differential pressure at the upper and lower ends of the float decreases.

When the weight of the float in the body, the float is stable at a certain height. The height of the float in the cone has a corresponding relationship with the flow rate.

是工业自动化过程控制中常用的一种变面积流量测量仪表。 Metal tube float flowmeter is a variable area flow measurement instrument commonly used in industrial automation process control. It has the characteristics of small size, large detection range and convenient use. It can be used to measure liquids,

The flow of gas and steam is especially suitable for medium flow measurement with low flow rate and small flow.


Measurement features:

1.Rugged all-metal structure design float meter

2.Measuring tube indicator with independent concept design

3.Select stainless steel, Hastelloy, titanium, PTFE material measurement system

4.Low pressure loss design

5.Short stroke, small structure design, total instrument height 250

6.Magnetic coupling structure ensures data transmission and more stable signal


7, insulation or heat tracing jacket

8, vertical, horizontal, various installation methods are more suitable for different use occasions

9.Suitable for small diameter and low flow medium flow measurement

10. Reliable work, small maintenance and long life

11.The requirements for straight pipe sections are not high

12. Wider traffic ratio 10: 1

13. Two-line large LCD display, optional on-site instant / cumulative flow display, with backlight

14.Single-axis sensitive indication

15.Non-contact magnetic coupling transmission

16. All-metal structure, suitable for high temperature, high pressure and strong corrosive media

17.Can be used in flammable and explosive dangerous situations

18.Select two-wire system, battery, AC power supply method

19.Multi-parameter calibration function

20.With data recovery, data backup and power failure protection functions


应用局限于中小管径,普通全流型浮子流量计不能大于大管径,玻璃管浮子流量计最大口径100mm, The application of metal tube float flowmeter is limited to small and medium diameters. The ordinary full-flow type float flowmeter cannot be larger than the large tube diameter. The maximum diameter of glass tube float flowmeter is 100mm.

The metal tube float flowmeter is 150mm, and the shunt-type meter for intelligent pipe with larger diameter