P80 Series 2

SKU: P80 Series 2

Capacitance Probe, Flexible Cable, Dry Granulated Solids and Powders

The top-mounted Delta Controls P80 Series 2 Capacitance Probes are top-mounted on a tank or silo with a cable hanging inside the vessel. Bottom weights are required when strong air currents are present. The insertion should be limited to 6 feet when high velocity air currents are present. The glands are sealed against moisture and water. All materials are 316 Stainless Steel.

The Model P87 and Model P87W are general-duty probes with a 0.125 inch diameter (3 mm) cable without a weight. It is intended for service where roiling or side-to-side movement of the process solids occur. Applications include cement load out bins, flour bins, bottom centerline takeout pellet hoppers, etc. Model P87W has a weighted bottom to provide cable stability.

The Model P88 is a heavy-duty probe with a 0.19 inch diameter (5 mm) cable and bottom weight intended for service in heavy granules and similar small chunk. Taconite, marble chips, and other similar materials are reliably sensed.

The Model P89 Probe is a heavy-duty cable probe which is hung from an internal to the tank support. The lower end is free to move and follow the flow of material. Multiple switch points or a 4-20 mA signal are common output signals. Used for reliable service in tall cement silos and the like.

Option: Model P89 Option B Is a heavy-duty cable probe which is hung from an internal to the tank support, and is also tied off to a similar support at the bottom of the tank. This unit is required when the material flow is substantial in the horizontal


  • Strong, highly reliable and heavy-duty cables
  • Durable gland to cable connection
  • Fiber filled Delrin® insulators and support for longterm reliability
  • Secondary seal of PTFE prevents moisture and condensation from causing false switching
  • Bare stainless steel sensing rods and cables resist abrasion and corrosion
  • Proven reliability in wide-ranging solids applications


  • Working Pressure: +1500 psig (+103.4 bar) @ +100 °F (+38 °C)
  • Working Temperature: -460 °F to +400 °F (-273 °C to +204 °C)
  • Bulk Density: 1230 lb/3 ft to 6500 lb/3 ft
  • Insertion Length: Custom
  • Process Connection:0.75 in NPT min
  • Threaded: 0.75 in to 1.0 in
  • Available Wetted Materials: 316 Stainless Steel

Required Ordering Information

  • Detailed model number
  • Tag or nameplate detail (if required)
  • Documentation/testing tiers (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

Additional Information


Capacitance Probe, Flexible Cable, Dry Granulated Solids and Powders