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The FDM 6000 is a portable, battery operated fuel dilution meter that determines the concentration of fuel dilution present in an oil sample within a matter of minutes. The FDM 6000 uses a unique patent pending fang design to pierce the cap of a disposable sample vial and draws in the headspace from the vial. The headspace flows over a SAW (Surface Acoustic Wave) sensor which reacts specifically to the presence of fuel vapor with a detection range of 0 – 15%. It can detect diesel, gasoline or jet fuel in engine oil. It conforms to ASTM D8004 - "Standard Test Method for Fuel Dilution of In-Service Lubricants Using Surface Acoustic Wave Sensing"

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The FDM analyzer employ a Surface Acoustic Wave (SAW) vapor sensor to measure the concentration of fuel in used oil samples by sampling the “headspace” in the vial. The device assumes (based on Henry’s Law) that the fuel concentration in the headspace vapor is directly related to the fuel present in the oil sample. The surface of the SAW sensor has a polymer coating with specific solubility to fuel vapors. The sample pump draws the headspace vapor through the SAW sensor where it is absorbed onto the polymer coating and detected. The purge pump then pushes air through the SAW to clean the system so it is ready for the next sample.

  • Conforms to ASTM D8004 - "Standard Test Method for Fuel Dilution of In-Service Lubricants Using Surface Acoustic Wave Sensing"
  • Direct fuel dilution measurement with 0.2 to 15% fuel dilution range
  • Innovative headspace sampling fang design ensures excellent repeatability (<= 5% RSD)
  • Disposable FDM vials eliminate carryover contamination
  • Small sample volume – only 0.5ml of oil used
  • Fast – it takes only one minute
  • Onboard memory allows use of up to three stored calibration profiles
  • Sample ID entry and data file export via USB cable
  • Battery powered, lightweight, optional hard case for transit
  • Audio prompt feature guides operators through testing

Model Comparison

FDM 6000 FDM 6001
Stored Calibration One calibration only Up to three calibrations

See it in action: FDM 6000 Portable Fuel Dilution Meter

The Q6000 Fuel Dilution Meter from Spectro Scientific

Spectro ScientificSpectro Scientific was founded in 1983 as Spectro Inc. and is one of the largest worldwide suppliers of oil, fuel, and fluid analysis instruments to industry, military and laboratories. With over 8000 instruments sold, and customers on six continents, Spectro Scientific is a leader in the field of condition based maintenance and oil in water analysis. Spectro Scientific, an ISO 9001:2015 company, develops a broad array of fluid analysis instruments for evaluating machine and lubricant condition in the field, in the lab and in highly mobile, handheld applications. The instruments provide critical data about machinery condition and can provide an early warning of equipment failure. Our core businesses are oil and grease analysis, fuel analysis and oil in water analysis for regulatory compliance.