The CYTSoft Psychrometric Calculator application was designed to provide engineers and scientists with highly accurate thermodynamic properties of moist air. It calculates 38 properties completely based on ASHRAE\'s Hyland-Wexler Formulations, which treat dry air, water vapor and moist air as real gases, rather than ideal gases.Range of validityPressure: 1 Pa to 5 MPa Dry-bulb temperature: -50 deg C to 200 deg C Humidity ratio: 0 to 100 000 (kg moisture)/(kg dry air), or 0 to 100 000 000 (g moisture)/(kg dry air)Limitations: