一、概况热线风速计按其测量方法分为两类:一种是恒电流原理,其特点是流过测速探头的电流保持恒定,测速时,探头的工作温度将随着风速的增高而下降;另一种是恒温度原理,其特点是恒温自动调节系统自动维持测速探头温度恒定。恒电流原理风速计的优点是电路简单,但敏感元件工作在变温变阻状态,这种状态容易 First, the overview Hotline anemometer according to their measurement methods are divided into two categories: one is the principle of constant current, which is characterized by the current flowing through the probe speed is constant, the speed of the probe, the probe temperature will drop as the wind speed increases; The other is constant temperature principle, which is characterized by thermostat automatic adjustment system automatically maintain the temperature probe constant temperature. The principle of constant current anemometer is the circuit is simple, but the sensitive components work in variable temperature resistance state, this state is easy