Drift

Jan 13, 20234 min read

Reliability: Flooded Sample Chamber 2

My 66 series 5000 with the flooded sample chamber is still drying out. Initially I would receive a "Processor Error" flag on startup...

Dec 8, 20226 min read

What is Differential Voltage Monitoring (DVM) ?

Many years ago Ontario defence lawyers cross-examined breath techs on "how much room there was" on the particular Intoxilyzer 5000C to...

Oct 12, 20224 min read

Change of Response at One Point but Not at Another Point that is Equivalent

Purpose: To suggest that there is empirical evidence in the matter before the Court of change in response by the approved instrument at...

Mar 23, 20183 min read

Response Drifts Over Time

In an article relied upon by the SCC in St. Onge, Brian Hodgson stated: Defence lawyers need to educate themselves about the meanings of...

Feb 10, 20187 min read

Causation of Error v. Calculation of Drift in Precision - Evidence Based Assessment of Reliability

What is the purpose in Stinchcombe/McNeil disclosure or O'Connor production of maintenance records and historical data? Crown CFS...

Jan 18, 201810 min read

Durability Over Time

Purpose: To obtain admissions respecting the inadequacy of ATC / CFS recommendations in requiring "stability of metrological...

Jan 14, 20187 min read

Error Rates and Drift in Precision

Purpose: To establish that the ATC/CFS is not sampling from aging instruments out in the field to determine error rates To establish that...

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