Marquest Scientific's complete line of Non-Metallic Gauge Guards and Instrument Isolators provide total isolation of instruments such as Analog Pressure Gauges, Pressure Transmitters, and Switches, etc. from corrosive & high purity fluids. Our engineered impermeable flexible diaphragm which is sealed by the upper and lower housing transmits or transfers the pressure by displacing a compatible fill fluid located in the upper chamber of the gauge guard as well as the internals of the instrument. The instrument measures this transmission of pressure with high accuracy without coming into contact with the process media.
