Thermistor NTC 100K SEN14, R37

Description

Thermistor(Ohm)	Type	Image	Price	Product Link
1K	NTC		500	Add to basket
2K	NTC		500	Add to basket
3K	NTC		500	Add to basket
4.7K	NTC		500	Add to basket
5K	NTC		500	Add to basket
10K	NTC		500	Add to basket
20K	NTC		500	Add to basket
47K	NTC		500	Add to basket
50K	NTC		500	Add to basket
100K	NTC		500	Add to basket

 

Getting started with The Thermistor NTC 100K 

In this tutorial you will learn how to use this thermistor NTC with Arduino Uno. The room temperature will be displayed on the serial monitor

 Hardware required

• Arduino UNO
• Thermistor 100k NTC
• Jumper wires
• Resistor 100k
• Breadboard

How a thermistor NTC Works

 Thermistors are variable resistors that change their resistance with temperature. They are classified by the way their resistance responds to temperature changes. In Negative Temperature Coefficient (NTC) thermistors, resistance decreases with an increase in temperature. The value of the resistor should be roughly equal to the resistance of your thermistor. In this case, the resistance of my thermistor is 100K Ohms, so my resistor is also 100K Ohms.

 

 Connecting the Hardware

 

Upload the sample sketch

//Thermometer with thermistor

/*thermistor parameters:

* RT0: 10 000 Ω

* B: 3977 K +- 0.75%

* T0:  25 C

* +- 5%

*/

//These values are in the datasheet

#define RT0 10000   // Ω

#define B 3977      // K

//————————————–

#define VCC 5    //Supply voltage

#define R 10000  //R=10KΩ

//Variables

float RT, VR, ln, TX, T0, VRT;

void setup() {

Serial.begin(9600);

T0 = 25 + 273.15;                 //Temperature T0 from datasheet, conversion from Celsius to kelvin

}

void loop() {

VRT = analogRead(A0);              //Acquisition analog value of VRT

VRT = (5.00 / 1023.00) * VRT;      //Conversion to voltage

VR = VCC – VRT;

RT = VRT / (VR / R);               //Resistance of RT

ln = log(RT / RT0);

TX = (1 / ((ln / B) + (1 / T0))); //Temperature from thermistor

TX = TX – 273.15;                 //Conversion to Celsius

Serial.print(“Temperature:”);

Serial.print(“\t”);

Serial.print(TX);

Serial.print(“C\t\t”);

Serial.print(TX + 273.15);        //Conversion to Kelvin

Serial.print(“K\t\t”);

Serial.print((TX * 1.8) + 32);    //Conversion to Fahrenheit

Serial.println(“F”);

delay(500);

}

 

The result of working circuit

Upload the program to the Arduino board and then open the serial monitor. If it works correctly you should get the temperature room on the serial monitor.