Model P51

SKU: P51

Capacitance Probe, Solid Rod, General Purpose Use

The Delta Controls Model P51 Capacitance Probe is a general purpose sensor. For a variety of applications, the sensing rod is jacketed in thick extruded and welded PTFE. There are no thin coatings or glued joints to fail. The P51 is intended for general purpose use.

The sealing gland is extremely reliable, sealing in process materials such as steam, hydrogen cyanide, gasoline, chlorine, liquid oxygen, and wastewater. The gland follower seals reside inside the body of a solid exterior. There are no screwed together joints in the gland which can inadvertently be turned, causing leaks, environmental spills, and toxic discharges. The gland body may be made of alternative metal or industrial plastics for highly corrosive service.


  • General purpose probe for most applications
  • Simple construction and easily installed
  • PTFE insulation allows operation in conductive or nonconductive liquids at high temperatures
  • Highly reliable clamped seal
  • Open design resists material deposition and is easy to clean
  • Easy to install vertically or horizontally
  • Can be used in most slurry and entrained solids applications


  • Working Pressure: +1500 psig (+103.4 bar)
  • Working Temperature: -460 °F to +400 °F (-273 °C to +204 °C)
  • Insertion Length: ≤ 20 ft (6 m)
  • Process Connection : 0.75 in MPT minimum
  • Threaded Process Connection: 0.75 in to 2.0 in
  • Tri-clamp 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, PTFE,carbon steel
  • Ground Sheath: 316 Stainless Steel (other materials available)
  • Other:Optional wall mount support bracket

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, Solid Rod, General Purpose Use

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Accessories and Related Products

Example Applications