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True North - DGA Oil Standards

Oil standards


DGA precision and accuracy is critical to your operation

Excellent for client or laboratory assessment of analytical performance using blind samplesDissolved Gas Analysis (DGA) is the most effective way of detecting incipient faults in oil-filled electrical equipment. The accepted methods for performing DGA are outlined in the ASTM D3612 and IEC 60567 standards. 

As these methods require proper calibration of laboratory equipment prior to analyzing oil samples, the use of certified oil standards is recognized as an ideal way of verifying and maintaining the precision and accuracy of DGA methods. However:

  • producing such standards in-house is tedious and costly
     
  • most laboratories have restricted their calibration process to the gas chromatograph used to analyze the gas sample extracted from the oil
     
  • GC calibration does not address either systematic or random errors that may occur in the gas extraction phase of the analysis

Traceability is key to your credibility

  • Each bulk standard of True North oil is produced using NIST traceable gas concentrations and NIST traceable calibrated balances
     
  • Bulk lots are continuously monitored for stability and nominal concentrations are validated statistically to reach a 95% degree of confidence on the precision range stated for each gas concentration
     
  • True North DGA Oil Standards are extracted from bulk standards on the day they are shipped
     
  • A Certificate of Concentration is delivered with each sample for traceability

Benefits

  • The only way to verify performance of the entire analytical process
     
  • Provide a common base for calibration of all DGA systems, independently of gas extraction method, gas detection technique and equipment used
     
  • Common reference guarantees significance of data trending using results from different laboratories
     
  • Excellent for client or laboratory assessment of analytical performance using blind samples