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Introduction

DFRobot LM35 Linear Temperature Sensor

The DFRobot LM35 Linear Temperature Sensor is based on the semiconductor LM35 temperature sensor. The DFRobot LM35 Linear Temperature Sensor can be used to detect ambient air temperature. This sensor is produced by National Semiconductor Corporation and offers a functional range between -40 degree Celsius to 150 degree Celsius. Sensitivity is 10mV per degree Celsius. The output voltage is proportional to the temperature.
It is commonly used as a temperature measurement sensors. It includes thermocouples, platinum resistance, thermal resistance and temperature semiconductor chips, which commonly used in high temperature measurement thermocouples. Platinum resistance temperature used in the measurement of 800 degrees Celsius, while the thermal resistance and semiconductor temperature sensor suitable for measuring the temperature of 100-200 degrees or below, in which the application of a simple semiconductor temperature sensor has good linearity and high sensitivity. The LM35 linear temperature sensor and sensor-specific expansion of Arduino board, in combination, can be very easy to achieve.

Specification

• Based on the semiconductor LM35 temperature sensor
• Can be used to detect ambient air temperature
• Sensitivity: 10mV per degree Celcius
• Functional range: -40 degree Celsius to 150 degree Celsius

Pin Definition

The definition of gray-scale sensor pin is

1. Signal Output
2. GND
3. Power

Analog Sensor Pin Definition

Connection Diagram

Analog sensor connection diagram

Sample Code

void setup()
{
    Serial.begin(9600);//Set Baud Rate to 9600 bps
}

void loop()
{ 
    int val;
    int dat;
    val=analogRead(0);//Connect LM35 on Analog 0
    dat=(500*val)>>10;
    Serial.print("Tep:"); //Display the temperature on Serial monitor
    Serial.print(dat);
    Serial.println("C");
    delay(500);
}

Documents

• Datasheet

Go Shopping DFRobot LM35 Linear Temperature Sensor (SKU:DFR0023)