Difference between revisions of "Analog Temperature Sensor Module"

Revision as of 10:25, 19 April 2016

Introduction

A temperature sensor is a component that senses temperature and converts it into output signals. By material and component features, temperature sensors can be divided into two types: thermal resistor and thermocouple. Thermistor is one kind of the former type. It is made of semiconductor materials; most thermistors are negative temperature coefficient (NTC) ones, the resistance of which decreases with rising temperature. Since their resistance changes acutely with temperature changes, thermistors are the most sensitive temperature sensors.

Principle

The Analog Temperature Sensor module uses an NTC thermistor, thus measuring temperature sensitively. It also has a built-in comparator LM393 which enables the module to output both digital and analog signals at the same time. The module can be used for temperature alarm and temperature measurement. The schematic diagram of the module is as follows:

Features

1) An NTC thermistor sensor is included, supporting high sensitivity.
2) A comparator LM393 is contained, so it can output both digital and analog signals at the same time.
3) Include a potentiometer to adjust the threshold of detection.
4) Working voltage: 3.3V-5V; PCB size: 2.3 x 2.3 cm
5) High measurement accuracy with a wide range, good stability, and strong overload capacity.
6) B25:3950;R25;10K

Application

The module can be applied to temperature detection, temperature control sensor, and ambient temperature detection, as well as temperature alarm.

Resorce

Thermistor_datasheet Test Experiment for Arduino
Test Experiment for Raspberry Pi