Corrosion Resistance and Error Source Analysis of Stainless Steel Pressure Gauge

1. Corrosion resistance of stainless steel pressure gauges

In fact, the corrosion resistance of stainless steel pressure gauges mainly depends on the material from which the instrument is made. At present, many high-quality stainless steel pressure gauges are mainly made of austenitic stainless steel. The pressure gauge made of this stainless steel material has strong corrosion resistance to the test medium and strong corrosion resistance to the working environment.

It is because of this special performance that stainless steel pressure gauges have strong corrosion resistance when measuring reducing salts and various inorganic acids, organic acids, alkalis, and salt media, and also have strong corrosion resistance when measuring chloride media.

Not only that, this stainless steel pressure gauge shows excellent corrosion resistance when directly measuring corrosive media in petroleum, chemical, food, medicine, shipbuilding and other industries in the atmospheric environment of marine and corrosive industries.

That is to say, the manufacturing material of stainless steel pressure gauge often determines the corrosion resistance of the instrument itself. Generally speaking, the protective layer and protective layer of the instrument are usually made of SUS 304 austenitic stainless steel, which has excellent environmental corrosion resistance.

In short, stainless steel pressure gauges have strong resistance to medium corrosion and corrosion resistance. Stainless steel pressure gauges are suitable for the detection of stainless steel components and harsh external corrosive environments, and are widely used in petroleum, chemical, metallurgical and other industries.

2. What are the error sources of stainless steel pressure gauges?

In production, stainless steel pressure gauges are instrumentation devices that measure the pressure of specified objects. Therefore, the basic requirement of such instrumentation equipment is to ensure the accuracy of the indication. In practical applications, the common faults of stainless steel pressure gauges are mostly related to incorrect indication of the gauge.

This is because when the stainless steel pressure gauge is affected by some external factors, the indication will be incorrect. For example, temperature, vibration and overload can cause pressure gauges to indicate incorrectly. The stainless steel pressure gauge operates under high temperature, high vibration or overload environment, and the internal elastic parts are deformed for a long time, and the pressure value cannot be displayed normally.

As a user, in order to avoid adverse effects caused by external factors, precautions must be taken to prevent stainless steel pressure gauges from working in high temperature, freezing, and vibration environments, and to prevent high temperature, freezing, and vibration protection.

In fact, during manometry, there are many problems that can lead to inaccurate measurements. For example, when measuring, the pointer of the stainless steel pressure gauge is not at the zero position, which directly leads to incorrect indication. The main reason for this failure is that the elastic part loses elasticity, the hairspring loses elasticity or falls off, the pointer is deformed and stuck, or the internal pipe of the instrument is blocked. After the pointer is not at the zero position, it must be repaired immediately to correct the pointer to the zero position.

In addition, the pointer of the stainless steel pressure gauge may vibrate abnormally or not move during the measurement process. The former is mainly due to the damage of the hairspring, the inactivity of the connecting rod or gear connecting bolt, the bending of the central axis, and the blockage of the pipeline. The latter is mainly due to the failure of the three-way blockage of the stainless steel pressure gauge, the blockage of the pipeline, the blockage of the pointer, and the loose gear.