Pressure Transducer Operating Principle

Monitor Liquid Level with Gems Psibar® Pressure Transducers 

  • Continuously Monitor Liquid Levels
  • Stainless Steel Wetted Parts are Compatible With Most Fluids
  • Mount Through Top or Side of Tanks

Gems Psibar® pressure transducers provide a great, cost-effective method for measuring liquid levels.  From measuring inventories in process storage tanks to monitoring hot water feed tanks, our design flexibility promotes easy installation, with mounting either through the tank top or from the side.

Getting Started...

Tank content is to be determined from the pressure exerted on the sensor, so you need to know the depth and the specific gravity of the liquid being measured.  When these two factors are known, the following equation can be used to determine the pressure range needed to specify an applicable pressure transducer:

Pressure in psi = Liquid Level (in feet) x (Specific Gravity x 0.433)


Tank Level:
Pressure in psi = Liquid Level (in feet) x (Specific gravity x 0.433)
Pressure in psi = 30 x (1 x 0.433)
Pressure in psi = 12.99 psi

Using a Psibar® Series 1200, 1600, 2200 or 2600 transducer, specific Pressure Range code F15 (0-15 PSI)

Pressure Transducers Operating Principle