User manual

www.sainsmart.com

Chapter11 LM35 temperature

sensor

Temperature sensor

What’s temperature sensor?

The temperature sensor is that use substances of various physical properties with temperature

variation of the sensor and let the temperature converted to electricity. These regularly change

the physical properties of the main body temperature sensor is a core part of the temperature

measuring instruments, and a wide variety. In accordance with the measurement method is

divided into contact and non-contact two major categories, In accordance with the characteristics

of sensor materials and electronic components into the thermal resistance and thermocouple.

Used in this experiment is the LM35 temperature sensor.

Working principle

LM35 temperature sensor output voltage linear relationship between the Celsius temperature

scale，0 ℃, output is 0V, for every 1℃increases in output voltage of 10mV.

LM35 pin diagram is as follows