• Sigma Instruments Company

Tubular Level Gauge

Sigma's direct reading liquid level gauge glasses are the recognized reliable means of accurately determining the liquid level in process tanks, pressure vessels, boilers & various other types of containers with liquid varying from ordinary water to highly corrosive and dangerous chemicals.The principle of liquid maintaining the same level makes this system very precise and reliable. The fluid attains its level in the glass tube of the level gauge as that of the vessel and is viewed through the glass tube. Sigma Gauge Valves form a major component of the tubular glass gauges. Two gauge valves at the ends of the glass tube are connected to the tank. Under normal operations, the valves are kept wide open causing the pressure to equalize in the system thus permitting the liquid to seek its true level for observation along the visible length.