How to choose the instrument you want?

Author: Amber Song

Instrument, the general name of the instrument showing the value, including the pressure meter flow meter, and various analytical instruments.

According to the needs of different application scenarios, the choice of instruments is also customized on demand. There are many types and styles of instruments.

For those of us who have just entered the industry, how to choose the instruments that they need?

I believe that after reading this article, you will have a clear and comprehensive understanding.

1. The working environment of the instrument.

Most of the instruments work in industrial environments, such as petroleum, chemical, metallurgy, power stations, pipelines, food and other industries.

Oil industry: instruments that require seismic resistance and high temperature resistance.

Chemical industry: Instruments that require chemical or chemical gases to resist corrosion.

Pipeline industry: weather resistant, corrosion resistant.

Food industry: Requires corrosion-resistant, safe, isolated food and instrument internal structures.

2. Please confirm the connect of thread sizes and material.

1)Thread sizes.

Internationally, there are several thread size specifications.

2) There are two kinds of materials for threading - copper, stainless steel and plastic.

The cost of copper is low, and if the environment used does not react to copper, copper can often be chosen as the material of the connection.

Made of stainless steel, it has weather and corrosion resistance. If the environment you use reacts to copper, you can use stainless steel instead.

The plastic material is used in the food industry and is a substitute for corrosion of copper and stainless steel materials, preventing the produced food from entering the instrument and polluting the internal structure of the instrument.

3. Installation method.

The main installation methods of the instrument are radial and axial.

1) The radial way is shown in the figure.

(Image from network share, if there is any infringement please contact delete)

(Picture of Wanxing, unavailable without permission)

Radial installation diagram

2)The axial installation method has general axial and axial belt edges, and the axial belt edges can be equipped with screw holes to facilitate the reinforcement of the instrument.

(Picture of Wanxing, unavailable without permission)

A front view of the axial installation.

(Picture of Wanxing, unavailable without permission)

Rear installation diagram

(Picture of Wanxing, unavailable without permission)

An example of a front side mounting with an axial band edge.

(Picture of WanXing, unavailable without permission)

An example of the back side of the axial band mounting.

4.Determine the pressure unit of measure you need:

1bar=1.0197162kgf/cm³ =100Kpa=0.1MPa=100000pa=14.5037744psi

(Approximate reference)

Once the above information is confirmed, you can know what kind of instrument you need.

Finally, although the meter is only an accessory, it is also a key accessory. The short life or inaccurate reading will affect the use of the entire device.

Therefore,I hope that readers should choose a reliable supplier, as well as better materials to extend the life of the instrument.

In addition, you can download the reference form and fill in the parameters according to the project, saving you valuable time.