Alcohol Breath Testing with the DMT™
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DMT-G. Standard DMT with Dry Gas Housing.
Proven reliability, accuracy and repeatability.
The DMT™ combines the judicially accepted analytical system of the BAC DataMaster with a customizable user interface. All DMT™ configurations include a touch-screen graphics display, a powerful embedded PC and multiple USB ports which enable the use of off-the-shelf computer printers and peripherals. The standard DMT™ is dynamic platform that is easily configured to satisfy any present and future needs of our customers.
Real-time graphics display of breath profile and alcohol curve during a subject test
The DMT™ is a lightweight, portable unit capable of being used on a wide range of AC power, 12VDC and internal batteries for mobile use.
The modular design of the DMT™ is secure, but provides quick access for service.
The DMT™ and DMT-G™ use the most advanced computer technology available. Our in-house database management and communication software package (DM Host) is available for use with any of our instruments.
Some of the features that make the DMT™ family the best instrument available on the market today are:
The DMT™ uses a highly-regulated steady-state infrared source lamp, the output of which is chopped in real time at a speed of around 500 HZ creating a virtually instantaneous sampling of the actual analytical output and enabling the trapping of any anomolies that could be detrimnental to the credibility of the sample. This is at least 200 times faster than any other technology.
The thermo-electrically cooled PbSe detector operates at about 0ºC. It is a well-established scientific fact that the cooler the operating temperature of a detector, the more sensitive it becomes, lowering the power requirements. By regulating this operating temperature the infra-red detector output becomes more stable, enhancing the repeatability, precision and low-level performance of the DMT™.
A folded optical path gives the DMT™ the ability to perform accurately and consistently at levels as low as .001 BrAC. The infrared energy must travel this full length through the breath sample before focusing onto the detector. This distance permits maximum energy absorption, enabling the DMT to achieve accuracy of ±.002 at a .100 BrAC. This is the highest accuracy specification in the industry.
A small sample cell ensuring the validity of the breath sample across a wide range of subject vital capacities (lung) and blowing patterns.
The narrow bandwidth optical filters allow the passage of a very limited frequency range of infrared energy, permitting the DMT to be highly specific for not only ethanol, but to the virtual exclusion of other alcohols and potentially interfering compounds. The specificity of the DMT™ system is comparable to or exceeds that of other systems using multiple optical filters or other technologies.
The Grey Body infrared energy source produces primarily infrared energy with very little unusable visible light. This maximizes the power efficiency, enabling the DMT to operate cooler, with greater stability and more efficiency than with any other type of energy source.
The DMT-G™ includes the same features, but adds an internal housing and connections for calibration with gas standards. The dry ethanol gas tank connects easily and securely inside the compartment.
The DMT-GF combines the DMT-G with a fuel cell incorporated in the analytical system. Some jurisdictions desire the additional analysis provided by an electro-chemical fuel cell. Infrared remains the primary source of analysis of the DMT. The fuel cell is a secondary form of analysis.