Vmax analyzers are highly accurate and stable over a wide range of uses—from screening patients to testing elite athletes. Many tests, such as Diffusing Capacity and Spirometry may be performed at rest, during exercise, and simultaneously with other measurements. For example: you may wish to conduct an exercise gas exchange test and simultaneously perform a Diffusing Capacity test on your cardiac patient.

Vmax Spectra Mass Flow Sensor technology raises the standard again, with the addition of Real-Time BTPS Correction and Dynamic Kelvin Sensing.Unlike traditional spirometers and flow sensing devices which must rely on a static BTPS correction factor, the Vmax Spectra’s flow sensor accurately reads gas temperature as well as molar mass at 8 millisecond intervals and corrects the sample flow and volume instantly. This breakthrough in mass flow science ensures accurate measurements with any inhaled and exhaled gas cooling profile, even if the room temperature has changed after calibration or during the test itself.

Dynamic Kelvin Sensing electronically links the sensor at the mouth to the integrated circuit processing the data. This technology eliminates the effects of spurious electrical resistance artifacts, which can distort the signal for sampling mass flow.

Using the low cost MicroGard® disposable filter greatly minimizes the possibility of contaminating testing instruments and patients. Shown with the new FreeFlow mouthpiece (patent pending) for control of tongue placement during testing.