LM35 Analog Temperature Sensor Module

Introduction

The Arduino LM35 Linear Temperature Sensor module is based on the

semiconductor LM35 temperature sensor. The LM35 Linear Temperature Sensor

module 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

Features

• Based on the semiconductor LM35 temperature sensor
• Can be used to detect ambient air temperature

Specification

• Type: Analog
• Sensitivity: 10mV per degree Celcius
• Functional range: -40 degree Celsius to 150 degree Celsius

Usage

Example code

int potPin = 0;                    
float temperature = 0;              
long val=0;                     
void setup()
{
Serial.begin(9600);
}

void loop ()                     
{
   val=analogRead(potPin);
   temperature = (val*0.0048828125*100);         
   Serial.print("Tep=  ");
   Serial.print(temperature);
   Serial.println(" C");
   delay(500);
 }

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