Maryland jurisdictions have slowly been replacing their 10 year old breathalyzers – affectionately called “breathaliars” by some – Intox EC/IR with the new breathalyzers – the Intox EC/IR II. This machine, manufactured by Intoximeters, Inc. in St. Louis, Mo. has a few improvements over its predecessor, according to the manufacturer.
In a letter dated July 6, 2006, M.R. Forrester, Chairman of Intoximeters, Inc., wrote the following about the newer EC/IR II:
One of the main reasons the EC/IR II was developed was certain parts of the EC/IR I were becoming obsolete, which made them harder to find and more expensive to replace. The primary difference concerns the Microprocessor on the motherboard and the case set. The analytical module in the EC/IR II is very similar to the one used in the EC/IR I in that we are using the same Fuel Cell sensor and sampling system. The microprocessor change is necessary because the EC/IR I microprocessor has been made obsolete since it is a state of the art device, which works at a far higher processor speed.
As often occurs with technological advances, the shortcomings of old technology are highlighted by the developments of new technology. For example, the higher flow of the new purge fan “is capable of opening [a] stuck mouthpiece.” The implication here is that the mouthpiece on occasion can get stuck, resulting in the machine recording insuficient breath. Additionally, the case set notes that there is higher “R[adio][]F[requency] immunity.” Although there is a claim that “RF immunity is adequate” in the EC/IR I, the need for higher RF immunity in the EC/IR II suggests otherwise. Other improvements made in the EC/IR II with serial numbers over 10,000 include modifications incorporating “additional test memory capacity, additional hardware to allow recirculation of a wet bath simulator, and enhanced EMC and RFI immunity.”
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