Portable breath analyser apparatus

A portable breath analyzing device to measure the rate of partial gas that is exhaled in the breath fluid, meeting a typical relative gap below 0.007 mg/L for any concentration below 0.400 mg/L, a relative typical gap below 1.75% for any concentration below or equal to 0.400 mg/L, and below or equal to 2.000 mg/L, and a relative typical gap below 6% for any concentration over 2.000 mg/L;

• said device including a rechargeable power supply unit, a device to emit pulsated infrared radiation, an infrared receiver, and a measuring vessel, in which the fluid circulates;
• the emission device including a heating element, whose power is between 60 mW and 130 mW;
• the measuring vessel including a metallic tube with an interior diameter between 5 and 12 mm, with a length between 140 mm and 220 mm and whose interior surface is polished and coated with a deposit that reflects at least the infrared radiation of wavelengths that are between (9 μm, 10 μm) and at each end of the tube, a nozzle comprising a cone-shaped section meant to be placed in the tube axis, and whose opening angle is between 8° and 30°, wherein the infrared emission device is placed on the longitudinal axis of the tube, at the level of one of the nozzles, and the receiver is placed on the longitudinal axis, at the level of the other nozzle, and the tube is equipped with heating means, which are able to bring the tube to a temperature above 39° Celsius.