• They do not need electrical power to operate. This can be a great advantage in the case of a power outage.
  • Simple to install – no calibration is necessary.
  • Can be used as a reference to check, or calibrate, other level technologies.
  • Pressure rating from vacuum to 4000psig.
  • Temperature rating from -150oF to 750oF
  • Not affected by the chemical or electrical properties of the process liquid. Specific gravity, dielectric, conductivity, surface turbulence, vapor, foam, etc. no longer needs to be considered.