Model P55

SKU: P55

Capacitance Probe, High Temperature and Pressure

The Delta Controls Model P55 Capacitance Probe utilizes RF admittance technology for high pressure and temperature applications. Model P55 is designed to replace nuclear gamma ray sensors and solid mechanical displacers in many applications. Use of the P55 avoids difficulty due to large size, high purchase and installation costs.

The P55 can be installed in high pressure and temperature fatty acid reactors, steam condensate knockouts, coal gasification, and similarly difficult applications. The ceramic materials are extremely strong. Delta Controls has developed packaging that protects the units from inadvertent damage while being transported or stored.


  • Ceramic primary seals and insulators
  • Multiple sealing produces maximum reliability, safety, and long service life
  • Alumina probe jacket withstands abrasion from slurries and entrained solids
  • Can be used for steam condensate drainage under maximum service conditions


  • Working Pressure: ≤ +2500 psig (+172.4 bar)li>
  • Working Temperature: +1000 °F (+538 °C)
  • Insertion Length:≤ 60 in (1.52 m)
  • Process Connection : 1.5 in MPT minimum
  • Threaded Process Connection: 1.5 in to 2.0 in
  • Flanged Process Connection:1.5 in to 4.0 in
  • Flange Rating: ≤ 600 lb
  • Available Wetted Materials: 316 Stainless Steel, carbon steel, blended alumina ceramic (other materials available)
  • Other:Optional intergland vent connection for lethal or toxic service

Required Ordering Information

  • Detailed model number
  • Tag or nameplate detail (if required)
  • Documentation & testing packages (if required, refer to Additional Resources in the product catalog)
  • Process fluid or material name
  • Process fluid or material dieletric constant
  • Maximum process temperature
  • Maximum process pressure
  • Upper and lower materials required for interface service

Additional Information


Capacitance Probe, High Temperature and Pressure

Content missing

Accessories and Related Products

Example Applications