How to Choose the Right Liquid for the Pressure Gauge?
The type of liquid used to fill the meter varies by application. Although pure glycerin provides the best performance in most applications, each has its own requirements. Guidelines to help ensure that fluids and applications correspond appropriately are:
If icing is a problem, use instructions filled with silicone oil or other similar liquids. They have low viscosity even in -60 seconds.
If the system has electrical accessories, such as series connection, please use insulating oil
If extreme temperature fluctuations are expected, use silicone oil. The higher the viscosity of the liquid, the greater its buffering capacity.
The above is the guide for you on how to choose the liquid pressure gauge, I hope it will help you.