KY-013 NTC Thermistor Analog Temperature Sensor Module

Description

KY-013 NTC Thermistor Analog Temperature Sensor Module Overview

The KY-013 NTC Thermistor Analog Temperature Sensor is a temperature sensing module that incorporates an NTC (Negative Temperature Coefficient) thermistor and a 10kΩ resistor, mounted on a compact breakout board. NTC thermistors exhibit a negative temperature coefficient, meaning their resistance decreases as the temperature rises and increases as the temperature falls.

Thermistors are made from semiconductor materials that are sintered to allow significant changes in resistance in response to small variations in temperature. This behavior makes thermistors ideal for precise temperature measurements. The KY-013 module measures ambient temperature by detecting the resistance of the thermistor, which varies with temperature.

How It Works

The sensor measures the resistance of the thermistor by passing a small DC current through it, which creates a voltage drop that can be measured. This voltage is then used to calculate the temperature. Essentially, the thermistor acts as a temperature-sensitive resistor, making it a simple but effective way to measure temperature in a variety of applications.

The KY-013 NTC thermistor is connected to an Arduino via an analog input pin, where the voltage from the sensor is read and converted into a temperature value (in Celsius) using a straightforward programming approach.

Key Features

• Operating Voltage: 5V
• Temperature Range: -55°C to +125°C (-67°F to 257°F)
• Measurement Accuracy: ±0.5°C
• Compact Size: 3 x 1.5 x 0.6 cm
• Weight: 2g

Specifications

• Measurement Range: -55°C to +125°C
• Accuracy: ±0.5°C
• Module Dimensions: 3 x 1.5 x 0.6 cm
• Weight: 2g

Pinout and Connections

The KY-013 module has a 3-pin header for connections:

1. GND (Ground): Connect this pin to the ground (GND) of your circuit.
2. VCC (5V): This is the power supply pin, which should be connected to 5V.
3. Signal Output (S): This pin outputs an analog signal corresponding to the temperature. Connect it to an analog input pin on a microcontroller (e.g., Arduino).

If you notice that the resistance increases as the temperature rises (which is contrary to the expected behavior), you may need to swap the connections of the power and ground pins.

Usage

This sensor can be used in a variety of temperature measurement applications, including environmental monitoring, HVAC systems, or any project that requires real-time temperature sensing. By reading the analog output from the thermistor and applying the appropriate conversion formula, you can easily convert the sensor’s output into a temperature value in Celsius.

The module works with any microcontroller with analog input capabilities, such as an Arduino, making it easy to integrate into a wide range of projects.