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Instantly add the DGA 150/250/400 Submersible Single Gas Monitor and 50,000+ more product series to your store or catalog  
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Qualitrol Submersible Single Gas Monitor, DGA 150/250/400

DGA 150/250/400 Submersible Single Gas Monitor

Brand: Qualitrol Company
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Hydrogen is generated under most fault conditions that occur in power transformers and is an early indication of larger problems in the transformers lifecycle.

Real time monitoring of hydrogen provides an economical method for maintaining the overall health of the transformer.
Features
  • Enables real-time monitoring of hydrogen (H2), an early indicator of transformer fault conditions
  • Accurately measures hydrogen without interference from other fault gases
  • Integrates with existing monitoring equipment and utilizes available transformer installation points
  • Integrated oil sampling valve with Luer fitting for easy sample collection

Specifications

Brand

Accuracy

  • In Gas: ± 500 ppm or ± 20 % of Measurement
  • In Oil: ± 25 ppm or ± 20 % of Measurement

Ambient Operating Temperature

  • -20° to 55° C (-4° to 131° F)

Cross Sensitivity to Other Gases

  • < 1 %

Data Communication

  • USB Serial Communications Port Locally

Housing

  • Thermosetting Powder-Coated Aluminum (ANSI #70 Gray)

Immunity

  • Conducted / Radiated Emissions: IEC 61000-6-1 (EN 61326-2-3)
  • Conducted / Radiated Radio Frequency Immunity: IEC 61000-6-2 (EN 61326-2-3)
  • Dielectric Isolation: 2,500 Vac for 60 seconds to Ground
  • Safety: IEC 61010-1
  • Surge withstand Capability: IEEE C37.90.1

Mounting

  • DGA 150: Drain Valve (Thread Mount), 1.5” - 11.5 NPT Union Fitting
  • DGA 250: RPRR (Thread Mount), 2.5” - 8 NPT Union Fitting
  • DGA 400: RPRR (Flange Mount), Four 0.5” Diameter Bolt Slots Equally Spaced on a 4” Bolt Circle

Mounting Flange / Spin Nut

  • Aluminum

Oil Temperature

  • -20° to 60° C (-4° to 140° F)

Power Supply

  • 10-26 Vdc at 2 A Min.

Pressure Scale

  • psig: 0 to 30 (kPa: 0 to 206.8, bar: 0 to 2.068)

Range

  • In Gas with Air Headspace: 1,000-100,000 ppm
  • In Gas with Inert Headspace: 500-100,000 ppm
  • In Oil with Air Headspace: 50-5,000 ppm
  • In Oil with Inert Headspace: 25-5,000 ppm

Remote Analog Output

  • 4-20 mA At, Max.

Repeatability

  • In Gas: ± 300 ppm or ± 10 % of Measurement
  • In Oil: ± 15 ppm or ± 10 % of Measurement

Resolution of Measurement

  • In Gas: 20 ppm
  • In Oil: 1 ppm

Sampling Valve

  • Stainless Steel

Seal

  • Neoprene
  • Nitrile
  • Viton

Sensor, Probe

  • Stainless Steel

Storage Temperature

  • -40° to 85° C (-40° to 185° F)

Valve Cap

  • Nickel-Plated Brass
  • Stainless Steel

Vibration

  • 50/60 Hz at 0.016” Displacement

Weatherproof Enclosure

  • IP55

Documentation

Data Sheets

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