Model P68

SKU: P68

Capacitance Probe, Sanitary Service, Metal Ion Free, Parallel Ground

The Delta Controls Model P68 Capacitance Probe uses all plastic wetted parts and is intended for sanitary service. The probe is designed for use in processes and storage tanks where the possibility of contamination is prohibited. Process examples include etchants, high purity plating solutions, and ferric chloride.

The P68 is also commonly used in industrial process systems which are extremely corrosive. Kynar® PVDF is highly inert and unaffected by almost all strong acids and bases below a temperature of 275 °F (135 °C). Applications include hydrofluoric acid level, refinery hydroformers, bromine condensors, chlorine generation cells, and radioactive wastes.

The P68 is a heavy-duty rugged sensing probe with jacketed ground reference rod and provides high reliability in difficult applications.


  • Virgin polypropylene or natural PVDF comes into contact with the process fluids
  • Thick plastic jacketing is welded in place
  • No cracks, joints, or crevices to collect contaminants
  • Suitable for fluids used in silicon chip and electronics manufacturing
  • Use in industrial processes which are extremely corrosive such as hydrofluoric acid plants, pickling lines, and plating solutions
  • Plastic surfaces are flame smoothed for the best available surface


  • Working Pressure: -15 psig to +300 psig (-1.03 bar to +20.7 bar)
  • Working Temperature: -40 °F to +300 °F (-40 °C to +159 °C)
  • Insertion Length:≤ 6 ft (2 m)
  • Process Connection : 3.0 in minimum
  • Threaded Process Connection: 3.0 in
  • Flanged Process Connection: 3.0 in to 4.0 in
  • Flange Rating:≤ 600 lb
  • Available Wetted Materials Kynar® PVDF, Polypropylene, carbon stee
  • Ground Rod: Kynar® PVDF, Polypropylene (other materials available)

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, Sanitary Service, Metal Ion Free, Parallel Ground

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