Analog temperature sensor and digital temperature sensor are adopted in the axle temperature monitor and alarm system of the passenger train to detect and alarming the axle temperature.

The temperature and pressure sensor gathered on-the-spot temperature and pressure signal, and A/D converter converted analog signals into digital signals to revise the on-the-spot flow of natural gas;

The temperature is measured with an integrated temperature sensor AD590, amplified and zeroed through an analog circuit, displayed directly by a digital voltmeter.