Thermistor Temperature Sensor Module

Module uses an NTC thermistor to measure temperature and provide an analog output.

Description

The Thermistor Temperature Sensor Module uses and NTC thermistor to measure temperature and provides and analog output.

PACKAGE INCLUDES:

• Thermistor Temperature Sensor Module

KEY FEATURES OF THERMISTOR TEMPERATURE SENSOR MODULE:

• Uses NTC thermistor
• Measurement range of -55 to +125°C
• Provides analog output of the reading
• 3.3 and 5V operation

This module utilizes an NTC thermistor for measuring temperature.  The output is normally input into an analog port on a uC where it can be read and the temperature calculated.

Thermistors are essentially resistors whose resistance value changes with changes in temperature.  NTC stands for ‘Negative Temperature Coefficient which means that the sensor resistance will decrease as temperature increases.

The thermistor is in series with an 10K resistor which creates a voltage divider.  As the thermistor warms up, the resistance lowers and the analog output increases towards Vcc.

The sensor is capable of reading temperature in the range of -55 to +125°C with an accuracy of +/- 0.5°C.

Module Connections

The module has a 3-pin header on the assembly for connections.  The ‘-‘ pin is connected to GND, the center pin is connected to Vcc and the ‘S’ pin is connected to an analog input pin on the uC.  If the output goes in the wrong direction i.e. resistance goes up as temperature goes up, reverse the power and ground pins.

1 x 3 Header 

• ‘-‘  = Ground
• Center pin = 5V
• S = Signal Output.  Connects to analog input pin on uC