Maintenance and Calibration of Electronic Breathalyzers

With more than 30 million alcohol tests per year, Dräger is the undisputed world leader in alcohol testing. Dräger electronic breathalyzers are fast, hygienic and guarantee reliable and accurate results. In many countries, law enforcement agencies use devices of the Alcohol Test series for roadside checks on a daily basis.

Every time the car starts, the driver must blow into the breathalyzer. If the result is negative, he has 5 minutes to start the engine. In case of a positive value, the driver is subjected to a second test. If still positive, the engine is blocked for half an hour.

These devices must therefore be extremely sensitive so as not to immobilize the vehicle unnecessarily. Therefore, periodic checks and regular calibrations are required to ensure the operation of these devices and the accuracy of the measurements. French legislation has fixed the number of verifications at least twice a year.

GTC Industrial offers a full range of standard gases for electronic breathalyzer calibration. The blends are made by AirProducts and meet the strictest standards. They are often confused with gravimetry, applying the principles of the ISO6142 standard, and are compatible with all models offered by major manufacturers in this sector.

Ethanol (C3H60) standard gas cylinders are produced from aluminum, single-use (disposable cylinders) in precise and known concentrations. They guarantee precision, optimum stability and maximum shelf life.

There are two types of standard gas cylinders:

• Aerosol cylinders require the use of etilometric adapters and are designed to perform gas tests for anti-start control.
• Classic cylinders with flow regulator are available in two sizes, 34L or 110L, according to standard gas needs.