Glycerine-filled pressure gauge and dry pressure gauge: what is the difference?

　　There are two main types of pressure gauges. Today, we will discuss why you might consider investing in Glycerine filled pressure gauges and dry gauges. Dry pressure gauges are the main force in the world of industrial and commercial parts. Look at most air compressors. Many industrial machines and even some of the more high-end bicycle pumps have dry gauges. However, dry meters do have some disadvantages. The dial may be obscured by moisture inside the meter. If the temperature drops low enough, the moisture will turn into ice, causing the equipment to fail completely.

　　So, what about Glycerine filled pressure gauge? Are their performances different?

　　The pressure range of Glycerine filled pressure gauge is equal to or higher than its dry pressure gauge. Their shell is filled with liquid, usually glycerin, although silicone or other liquids are sometimes used. The liquid covers the internal parts and can be seen on the surface of the pressure gauge. The liquid inside can suppress the effects of pulsation and pressure peaks-this is another advantage of choosing a dry pressure gauge. This means that the pressure gauge is unlikely to give inaccurate readings due to wear and tear caused by mechanical vibration and pulsation. The liquid in these pressure gauges has a dual role in countering these effects. It not only helps to reduce the impact of vibration, but the liquid can also lubricate the moving parts of the pressure gauge and reduce daily friction. The filler also has the benefit of preventing internal corrosion. Because the mission tube and the movement are covered by a liquid, it can prevent moisture and other corrosive substances. All these factors add up to make the Glycerine-filled pressure gauge have a longer service life than dry pressure gauges and lower replacement costs. In environments where vibration and condensation are a factor, they are definitely a consideration.

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