本文给出了一个可以在任何压力下使用的湿度图，所提供的潮湿混合物表现为理想气体。因此，就空气而言，不需要几个图表，每个图表对应不同的高度。此外，一个图表不仅适用于空气，也适用于任何干燥气体混合物，例如潜水气体混合物（例如氦和氧的混合物，适用于压力高达600 psia（4 MPa，或潜水深度为1300英尺）。此外，还介绍了一种交互式计算机代码PSYCH，它可以轻松地代替图表或与图表结合使用。该软件可用于常规或国际单位制。单位:双引文:研讨会，ASHRAE交易，1986年，第92卷，pt。1B，旧金山

This paper presents a single psychrometric chart that can be used at any pressure, that the humid mixture provided behaves as an ideal gas. Thus, in the case of air, the need for several charts, each for a different altitude, is eliminated. Furthermore, the one chart is valid not only for air but for any dry-gas mixture, such as diving gas mixtures (of helium and oxygen, for example, for which it is applicable to pressures up to 600 psia (4 MPa, or diving depths of 1300 feet).Furthermore, an interactive computer code PSYCH is presented, which can be used with ease, in lieu of or in conjunction with the chart. The software can be used with either conventional or SI units.Units: Dual