Brand:MD TOTCO
Color:transparent
The main purpose of filling the pressure gauge with oil is to reduce the buffer of the pointer to the zero position when the relative pressure change amplitude is large, which can effectively ensure the sensitivity of the pressure gauge. It mainly includes glycerin and silicone oil two kinds.
Glycerin: mainly earthquake resistance;
Silicone oil: is also anti-seismic, but silicone oil than glycerin low temperature resistance, if outdoor -20℃, glycerin crystallizes, but silicone oil can also make the instrument work normally