Model P91

SKU: P91

Capacitance Probe, Floating Probe for Oil Skimmer

The Delta Controls Model P91 probe floats on the top surface of oil in a skimmer basin or separation vessel. A vertical sensing rod, with parallel ground reference rods, is supported by outrigger floats. The sensing rod goes through the floating oil and into the water. The P91 probe/module measures the distance from the top of the oil to the interface between the water and the floating oil. This measurement is then converted into a 4-20 mADC signal equivalent to the thickness of oil present. Optionally, an on/off differential control signal can be produced to control a drainage pump or skimmer trough. The P91 is used by petroleum refineries; machinery manufacturing plants, oil field salt water disposal companies, and similar industrial operating companies.

Features

  • Measures from 2 to up to 36 inches (50 to 900mm) of oil floating on water
  • Neither oil nor water level has to be held constant; up to 50 feet (15 meters) total elevation change can occur
  • Works on large tank tramp oil collectors
  • Works well with fresh or salt water
  • Entire transmitter can be submerged to 50 feet (15 meters) without harm
  • All 316 S.S. electronic housings are optional for highly corrosive and offshore applications
  • Insensitive to tank pressure from vacuum to 60 PSIG (-1 to 4 bar) is basic
  • Hastelloy® "C" is optional
  • Unaffected by foam, bubbles, and froth
  • Works great with lip type rotatable skimmers

Specifications

  • Electronic Module: Remote from sensor
  • Range: 0-6 to 0-36 inches (150 to 900 mm)
  • Oil Specific Gravity: 0.70 minimum
  • Tank Pressure: From hard vacuum to 60 PSIG (-1 to 4 BAR) is optional
  • Attachment: 0.0620 cable made of 316 S.S.
  • Interconnection: Strong and oil resistant. Allows pull up for testing and maintenance. Also acts as tether in large pond applications. Has a rubber tubular jacket over the signal cable; up to 60 feet (20 meters) long
  • Floats and Frame Support: 316 S.S.
  • Sensing Rod Jacket and Seals: PTFE extruded and welded PTFE
  • Rating: Intrinsically safe; Class 1, Divisions 1 & 2, Groups ABCD,EFG

Applications

The Delta Controls Model P91 probe floats on the top surface of oil in a skimmer or separation vessel. A vertical sensing rod, with parallel ground reference rods, is supported by outrigger floats. The sensing rod goes through the floating oil and into the water. The P91 probe/module measures the distance from the top of the oil to the interface between the water and the floating oil. This measurement is then converted into a 4-20 mADC signal equivalent to the thickness of oil present. Optionally, an on/off differential control signal can be produced to control a drainage pump or skimmer trough.

The Delta Controls Model P91 is used by petroleum refineries; machinery manufacturing plants, oil field salt water disposal companies, and similar industrial operating companies.

Accessories and Related Products