NTC temperature sensor is a temperature sensor based on a negative temperature coefficient thermistor. The resistance value of the NTC thermistor decreases with the increase of temperature, which enables NTC temperature sensors to sense temperature changes and convert them into changes in resistance value, and then convert them into measurable temperature signals through circuits.
Structural characteristics
NTC temperature sensors typically consist of core components such as NTC thermistors, metal or plastic casings, extension leads, and metal terminals or connectors. And install it in the circuit to achieve temperature measurement.

Working principle
The working principle of NTC temperature sensors is mainly based on the thermal sensitivity effect, which refers to the phenomenon that the resistivity of a substance changes under temperature changes. When the ambient temperature changes, the resistance value of the NTC thermistor will change accordingly. By measuring the resistance value of an NTC thermistor, the current temperature information can be indirectly obtained. Due to the functional relationship between the resistance value of the NTC thermistor and temperature (usually a negative exponential relationship), the resistance value can be converted to temperature value by consulting the resistance temperature characteristic curve or using corresponding algorithms. Thus achieving temperature measurement and control.

Application area
NTC temperature sensors are widely used in various temperature measurement and control fields due to their high sensitivity, high precision, and wide operating temperature range. Common applications include household appliances such as air conditioners, refrigerators, washing machines, dishwashers, aquaculture equipment, fish tanks, new energy vehicle charging stations, network signal base stations, and industrial settings that require precise temperature control. In addition, NTC temperature sensors are commonly used in consumer electronics products such as smartphones, tablets, etc.

Temperature sensor plays an important role in the washing machine

Temperature sensors play a crucial role in washing machines and are one of the important sensing components inside the machine. By sensing the changes in the internal water temperature of the washing machine, the signal is fed back to the control unit of the washing machine. The control unit changes the operating status of the washing machine based on the received signal, thereby achieving temperature control required for different functions of the washing machine. It not only helps the washing machine achieve automatic control, but also adjusts the water temperature according to different washing needs, ensuring that clothes can be properly cleaned and cared for. Washing machine temperature sensors usually use thermistor sensors to sense changes in water temperature, convert the changes into electrical signals, and output them to the main control board of the washing machine, ultimately achieving temperature control of the washing machine.

The temperature sensor of the washing machine has the following functions:
1. Avoid damaging clothing with high water temperature.
2. In washing machines with functions such as heating, drying, and disinfection, temperature sensors provide temperature measurement, controlling water temperature, hot air temperature for drying clothes, and air temperature for disinfection to ensure optimal cleaning and care effects.

The washing machine temperature sensors produced by Dongguan GuandeSensor have a variety of types and complete specifications. By using a highly sensitive thermistor sensor, it can sense the subtle temperature changes of the washing machine and control the water temperature according to different washing conditions, thus achieving temperature control of intelligent washing machines

The use of NTC temperature sensors in smart toilets

With the development of technology, smart products are increasingly appearing in our daily lives, with breakthroughs in functionality and user experience. These products greatly facilitate our lives and provide us with more comfortable and convenient experiences.

The indispensable smart toilet in life greatly facilitates people’s lives. To achieve a better sense of experience and comfort, NTC temperature sensors play a very important role in it.

NTC temperature sensors in smart toilets are generally located at the water outlet and inlet of the toilet, mainly used for temperature sensing and real-time monitoring of water temperature, in order to better control the temperature of the inlet and outlet. NTC temperature sensors commonly used in toilets often adopt a bullet-head stainless steel shell design, with a protruding ring or mounting piece in the middle for easy fixing of the temperature sensor.

NTC temperature sensors produced by Dongguan Guande Sensor Technology Co., Ltd. are widely used in smart toilets due to their easy installation, high sensitivity, good reliability, and fast response. Their real-time temperature measurement effect is outstanding and can meet the temperature measurement requirements of different customers and different models of products.

Exploring the Diverse Applications of Temperature Sensors

Temperature sensors are versatile devices that play a crucial role in various industries and everyday applications. From monitoring environmental conditions to ensuring the optimal performance of electronic devices, these sensors offer invaluable insights into temperature changes. Let’s delve into some of the primary uses of temperature sensors:

1. Climate Monitoring: Temperature sensors are essential for tracking weather patterns, climate changes, and environmental conditions. They help meteorologists gather data for weather forecasts, assess climate trends, and study the impact of global warming.

2. Industrial Processes: In manufacturing and industrial settings, temperature sensors are utilized for process control, ensuring that equipment operates within specified temperature ranges. They are instrumental in regulating the temperature of machinery, monitoring chemical reactions, and preventing overheating.

3. HVAC Systems: Heating, ventilation, and air conditioning (HVAC) systems rely on temperature sensors to maintain comfortable indoor environments. These sensors enable precise temperature regulation, energy efficiency, and automated climate control in residential, commercial, and industrial buildings.

4. Healthcare and Medical Devices: Temperature sensors are integrated into medical devices such as thermometers, incubators, and patient monitoring systems. They assist healthcare professionals in accurately measuring body temperature, monitoring patient vital signs, and providing optimal care.

5. Automotive Industry: Temperature sensors are essential components in vehicles, responsible for monitoring engine temperature, coolant levels, and cabin climate control. They help prevent engine overheating, optimize fuel efficiency, and ensure passenger comfort.

6. Food Safety: In the food industry, temperature sensors play a critical role in food safety and quality control. They monitor and regulate temperatures during food processing, storage, and transportation to prevent bacterial growth, ensure freshness, and comply with safety regulations.

In conclusion, temperature sensors serve a wide range of purposes across various industries, contributing to efficiency, safety, and quality in numerous applications. Their ability to accurately measure temperature variations makes them indispensable tools in modern technology and daily life.

What is a temperature sensor?

A temperature sensor is a device that measures the degree of hotness or coldness of an object (or substance). A temperature sensor that can convert changes in temperature into changes in electrical quantities (voltage, current, impedance, etc.) is called a temperature sensor. Its working principle is to use the different physical properties of various materials to convert temperature into electrical quantities.

Temperature sensors have three stages of development: traditional discrete temperature sensors, analog integrated temperature sensors, and intelligent temperature sensors. Currently, new types of temperature sensors worldwide are moving from analog to digital, from integration to intelligence, and to networking.
Commonly used temperature sensors include thermistor temperature sensors, resistance temperature detector (RTD) sensors, thermocouple temperature sensors, and semiconductor-based temperature sensors.

Thermistor temperature sensors: The resistance value of a thermistor changes with temperature. According to the different temperature coefficients, they are divided into positive temperature coefficient thermistors (PTC) and negative temperature coefficient thermistors (NTC). The resistance value of PTC thermistors increases with temperature, while that of NTC thermistors decreases with temperature. They both belong to semiconductor devices and are widely used in various electronic components.

Resistance temperature sensors (RTD): RTD sensors are used to measure temperature. They can convert temperature into changes in resistance values, and are commonly used in PT100, PT1000, copper thermal resistance temperature sensors, etc., and are widely used in industrial automation, medical equipment, automotive electronics, and other fields.

Thermocouple temperature sensors: Thermocouple temperature sensors use the thermoelectric effect to measure temperature.

Semiconductor-based temperature sensors: Semiconductor-based temperature sensors are usually integrated into integrated circuits (ICs). These sensors use two identical diodes that have temperature-sensitive voltage and current characteristics to monitor changes in temperature. They can be divided into local temperature sensors and remote digital temperature sensors.