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Preferred Utilities

Preferred Utilities engineers and fabricates fuel oil handling systems for diesel generators and dual-fuel fired boilers for mission critical facilities such as data centers, hospitals, and emergency response facilities. Our engineers specialize in mission critical fuel oil system design so they are current with the latest industry practices and fire protection codes. In addition, Preferred Utilities offers a wide variety of fuel oil system components designed to meet the unique requirements of our fuel oil customers. Preferred Utilities' industrial factory is located in Danbury, CT

HD-A1 Oil & Water Leak Detector

The HD-A1 Leak Detector uses a combination electric-optic technology which reliably distinguished between water and oil.  The detector contains an infrared optical liquid detector and a set of stainless steel conductivity rings.  Oils are detected by the optical liquid detector and water is detected by both the optical liquid detector and the conductivity rings. Ruggedly constructed, with no moving parts, the solid state HD-A1 Leak Detector provides reliable and cost effective performance.  The system is suitable for all grades of oil, including #6 and gasoline.

Application

The Preferred HF-AL leak detector is installed in the interstitial area between two tank walls, or in the containment basin of a single wall tank to detect both oil and water leaks. Up to three HD-A1 Leak Detector can be connected to a single TG-EL-D3 Tank Gauge and up to 12 Leak Detectors can be connected to a single TG-EL-D5 Tank Gauge. The detectors monitor for leaks through the inner-wall (oil) or outer-wall (groundwater) of double walled tanks; oil or water leakage into the piping annular space; ground water leakage into a sump.
Typical installation areas include:
  • Fiberglass or Steel Tank Annular Space
  • Piping or Containment Sump
  • Vault Spaces

Features

  • Uses Combination Electro-Optic Technology
  • Detects Oil by Optical Liquid Detector; Water by Optical Liquid Detector and Conductivity Ring
  • Suitable For All Grades of Oil, Including #6 and Gasoline
  • Typical Installation Areas Include: Fiberglass or Steel Tank Annular Spaces, Vault Spaces

Overview

The HD-A1 Leak Detector uses a combination electro-optic technology, which reliably distinguishes between water and oil. The detector contains an infrared optical liquid detector and a set of stainless steel conductivity rings. Oils are detected by the optical liquid detector and water is detected by both the optical liquid detector and the conductivity rings. Ruggedly constructed, with no moving parts, the solid-state HD-A1 Leak Detector

Solid State: No Moving Parts, Fail Safe

Leak Indications: Red for Oil, Yellow for Water

Detector Test Switch: Integral

 

Sensor Cable: 3 Wire, Shielded, Direct Burial or Conduit Installation, Max. Length 800 feet

Splice Kit: Sensor Type

Water Detection: Conductivity

Oil Detection: Electro-Optics

Wetted Parts: Stainless Steel, Epoxy Resin or Polypropylene

Fluid Temperature: 135° F Maximum

Transmitter Temperature: -5 to 122° F

Tank Mounting: 2″ Tank Opening Minimum. Other Areas Such as Steel Tank Sumps, Double Wall Pipe or Tank Vaults Require ¾” NPT Minimum

Specification

Provide and install leak detectors in the annular space within the double wall tank.  The leak detectors shall be solid state and discriminate between oil and water, display the leak with (2) LEDs on its indicating transmitter, and send an appropriate alarm signal to the tank gauge.  All leak detectors shall be intrinsically safe, have continuous electronic checking, fail safe to an alarm condition, and have indicating transmitters with a magnetic test mechanism at grade level to exercise the senors and check the tank gauge response.  Test systems that bypass the sensors or rely only on electronic simulation are unacceptable.  The leak detectors shall be Preferred Utilties Manufacturing Corporation, Danbury CT, Model HD-A1.