在电动机及电动工具的温升、负载及过转矩试验中．采用转矩转速传感器具有精度高、加载方便等优点，配以二次仪表，又能方便地读取转矩、转速等数据。但在电动工具试验中，与传感器配套的磁粉制动器在机组运行时由于发热严重往往被卡死．虽然可采取通水冷却措施．常常也无济于 In the motor and power tools temperature, load and torque test. Torque speed sensor with high precision, easy loading, etc., together with the secondary instrument, but also easy to read torque, speed and other data. However, in the electric power tool test, the magnetic powder brake matched with the sensor is often jammed due to fever when the unit is running. Although water cooling measures can be taken. Often also helpless