| 摘要 |
PURPOSE:To read directly and measure relative humidity at a high speed by moving a graph which is calculated from a dry-wet calculation expression slantingly to wet-bulb thermometer and a dry-bulb thermometer. CONSTITUTION:Dry-bulb temperature is denoted as the lateral axis and the temperature value between the dry-bulb temperature and wet-bulb temperature is denoteed as the long longitudinal axis to draw a graph; and the line of 100% relarive humidity of this graph is prolonged as a reference line, and the graphic is arranged at a position A so that when the reference line is at a position of 0 deg.C on the dry-bulb temperature of 0 deg.C on the lateral axis of this graph. Then, the graph is arranged at a position B so that when the reference line is at a position of 40 deg.C on the dry-bulb temperature of 40 deg.C on the lateral axis of this graph. Thus, this graph is moved linearly between the positions A and B. For the purpose, the reference line is adjustd to a dry-bulb indication value and then the value of the position of the temperature of the wet bubble lower than that of the dry bulb on the graph is the current relative humidity, thereby measuring the relative humidity speedily. |
