Pneumatic Torque Tubes
Torsion tube pneumatic tools 8000 series are for continuous level measurements even under high pressure and temperature conditions. They exploit the hydrostatic thrust that the displacer receives when immersed in a liquid. The buoyancy on the displacer is proportional to the liquid level and operates on an elastic torque tube which, transforming the applied force in a rotary movement, generates a level measurement.
The system is known by its high precision and also by the absence of gasket and friction as the torsion tube also acts as a pressure fluid holding device for the process fluid to which the level is measured.
The instruments are equipped with a calibration system based on the specific weight of the measured liquid providing measuring for different fluid interfaces or for density measurements.
They are easy to install and adaptable to different environments. The instrument can integrate a pneumatic transmitter or regulator or both.