Sometimes, using Glycerine filled manometer is a good idea. Sometimes it is better to use a dry pressure gauge. The decision really depends on your specific application.
As long as the dry pressure gauges are installed in the following positions in the system, they can work normally in many applications:
Minimum temperature fluctuation and vibration
The flow of the pressurized medium is continuous
The main cause of pressure gauge failure is vibration. In dry pressure gauges, sensitive internal components may be damaged due to vibration and pressure peaks. Similarly, moisture and humidity can also cause problems with dry pressure gauges. Just like the windshield of your car on a cold morning, the condensed water will atomize the dry pressure gauge, making it difficult to read.
Four benefits of liquid filling
The liquid absorbs vibration and pressure peaks
The damping effect of the liquid allows the operator to obtain accurate readings under pressure fluctuations and vibrations
The internal moving parts of the liquid-lubricated pressure gauge greatly reduce the influence of wear and extend the service life of the pressure gauge
Because most of the Glycerine-filled manometers of Vacuum pressure gauge Manufacturers are filled with non-aqueous liquids and are sealed, they perform well in corrosive environments and can prevent moisture penetration, condensation, and icing.
