温度、湿度是非常重要的两个物理量,不少行业的工作过程都要用这两个参量作为依据。因此,需要有价廉物美、精确可靠的测温、测湿仪器。最普通的温湿度仪有两个水银温度计,一个水银球置于空气中,另一个水银球置于水中,从而可测量干球温度和湿球温度,再通过人工计算,查表求出相对湿度。这种温湿度仪虽然测温、测湿方法简单,价格便宜。但这种方法 Temperature and humidity are very important two physical quantities. Many industrial processes need to use these two parameters as a basis. Therefore, the need for cheap, accurate and reliable temperature, humidity measuring instruments. The most common temperature and humidity meter has two mercury thermometers, one mercury ball placed in the air, another mercury ball placed in the water, which can measure the dry bulb temperature and wet bulb temperature, and then manually calculated, look-up table to find the relative humidity . Although this temperature and humidity meter temperature measurement, measuring wet method is simple, cheap. But this method