溫度探頭, 溫度感測器類型 & 應用

Temperature probes and temperature sensors are two different devices, and they have their own characteristics and application scenarios in measuring temperature.

1M 2M 2.5M 3M Cable DS18B20 Waterproof Digital Temperature Probe Temperature Sensor Stainless Steel Probe

3-wire PT100 temperature probe for industrial temperature control Class B, Class A high accuracy

NTC thermistor Temperature Sensor B3950 3380 3435 3470 10K Waterproof Probe 1 Meter

Temperature Probe

A “temperature probe” is a sensor used to measure temperature by converting the heat energy into a measurable electrical signal, and the most common types of temperature sensors within a probe include thermocouples, Resistance Temperature Detectors (RTD), and thermistors, each with distinct characteristics and applications based on the required accuracy, temperature range, and response time needed for a specific situation.

‌Definition‌: 溫度探頭是一種用來測量溫度的裝置, 通常由敏感元件和測量電路組成. 敏感元件可以是熱電偶 (100分, 1000 分), 熱電阻 (NTC, 正溫度係數), 半導體 (DS18B20數字), ETC。, 它可以將溫度變化轉換成電訊號. 然後就被放大了, 過濾的, 轉換的, 並由測量電路處理, 最後輸出與溫度成正比的電訊號.
‌Working Principle‌: The working principle of the temperature probe is to use the response of the sensitive element to temperature changes to convert temperature changes into electrical signals. Common sensitive elements include thermocouples, thermal resistors, semiconductors, ETC. The working principle of the thermocouple is to use the thermoelectric effect of two different metals or alloys. When they are connected together and at different temperatures, an electromotive force proportional to the temperature is generated. The working principle of the thermal resistor is to use the property that the resistance of metal or semiconductor materials changes with temperature. When the temperature changes, the resistance value will also change accordingly. The working principle of semiconductor is to use the property that the conductivity of semiconductor material changes with temperature. When the temperature changes, the conductivity will also change accordingly.
‌Type‌: The types of temperature probes mainly include thermocouple probes, thermal resistor probes, semiconductor probes, ETC. Thermocouple probes use thermocouples as sensitive elements, and have the characteristics of wide measurement range, 反應速度快, 和高精度. Thermal resistor probes use thermal resistors as sensitive elements, and have the characteristics of high measurement accuracy, good stability, and strong anti-interference ability. Semiconductor probes use semiconductors as sensitive elements, and have the characteristics of small size, 輕的, and low power consumption.
‌Application fields‌: Temperature probes are widely used in industry, scientific research, 醫療保健, environmental protection and other fields. Such as temperature measurement and control in chemical, petroleum, metallurgy, electricity, pharmaceutical, food and other industries.

DS18B20 Temperature Sensor Cable with Probe
Wiring: 紅色的(VCC), 黃色的(Data), 黑色的(GND)
Wide temperature range of -55 ℃~ +125 ℃
電源: 3.0V ~ 5.5V
Tips: Using a 4.7K resistor between the Data and VCC will make the testing of the probe easilier.

溫度探頭性能及分類

Comparison between thermistor temperature sensor probe and bimetallic temperature probe

NTC 3950 100K 熱敏電阻感測器 1 儀表接線和端子

熱電偶:
功能: Generates a voltage difference based on the temperature at the junction of two dissimilar metal wires.
Pros: Wide temperature range (-200°C to 1750°C), relatively inexpensive, 快速反應時間.
Cons: Lower accuracy compared to other sensors, requires calibration tables to convert voltage to temperature.
應用領域: High-temperature applications like furnaces, engine monitoring, industrial processes.

Thermistor:
Applications of Temperature Probes:
Industrial Processes: Monitoring temperature in manufacturing processes like ovens, reactors, and extruders.
HVAC Systems: Regulating room temperature in buildings by monitoring air temperature.
Food Safety: Monitoring food temperature during cooking and storage to ensure food safety.
Medical Devices: Measuring body temperature in patients through probes inserted into the body.
汽車產業: Monitoring engine coolant temperature and cabin temperature.
Scientific Research: Precise temperature measurements in experiments.

溫度感應器
‌Definition‌: A temperature sensor is a device that can convert temperature changes into electrical signals. It usually consists of a sensitive element and a signal processing circuit. 敏感元件可以是熱電偶, 熱電阻, semiconductor, ETC. The signal processing circuit can be an analog circuit, a digital circuit, ETC。, which together complete the acquisition, processing and output of temperature signals.
‌Working principle‌: The working principle of the temperature sensor is similar to that of the temperature probe. It also uses the response of the sensitive element to the temperature change to convert the temperature change into an electrical signal. 然而, the temperature sensor usually has a more complex signal processing circuit, which can perform more advanced processing on the temperature signal, such as digital conversion, data storage, communication, ETC.
‌Type‌: The types of temperature sensors mainly include analog temperature sensors, digital temperature sensors, and intelligent temperature sensors. Analog temperature sensors output analog signals, which need to be converted into digital signals through analog-to-digital converters. Digital temperature sensors directly output digital signals, and have the characteristics of strong anti-interference ability, 高精準度, and easy integration. Intelligent temperature sensors have functions such as self-diagnosis, self-calibration, and communication, and can realize remote monitoring and control.
‌Features‌: The temperature sensor has the characteristics of high measurement accuracy, good stability, 抗干擾能力強, and easy integration. Different types of temperature sensors have different characteristics, such as analog temperature sensors require analog-to-digital converters, digital temperature sensors directly output digital signals, and intelligent temperature sensors have functions such as self-diagnosis, self-calibration, and communication.
‌Application fields‌: Temperature sensors are widely used in smart home, smart wearable, medical equipment, 工業自動化, environmental monitoring and other fields, such as air conditioners, 冰箱, 洗衣機, 溫度計, sphygmomanometers, industrial control systems, ETC.

How to choose?
When choosing a temperature probe or temperature sensor, the following factors need to be considered:

‌Application environment‌: Consider whether the measured environment has special conditions such as corrosiveness, high temperature, high pressure, ETC。, so as to select suitable materials and protection levels.
‌Measurement range‌: Select a suitable sensor according to the range of the temperature to be measured to ensure that the sensor can accurately measure within the required range.
‌Accuracy requirements‌: Select a sensor with corresponding accuracy according to the accuracy requirements of the application for temperature measurement.
‌Cost budget‌: Select a cost-effective sensor according to budget constraints.

How to use?
When using a temperature probe or temperature sensor, the following matters need to be noted:
‌Installation‌: Install it correctly according to the installation instructions of the sensor to ensure that the sensor is in good contact with the object to be measured and avoid measurement errors caused by improper installation.
‌Wiring‌: Correctly connect the signal line and power line of the sensor to ensure the stability and accuracy of signal transmission.
‌Calibration‌: Calibrate the sensor regularly to ensure that its measurement accuracy meets the application requirements.
‌Maintenance‌: Clean and maintain the sensor regularly to avoid dust, dirt, ETC. affecting the measurement performance of the sensor.

Temperature probe sensor is one of the important products of our YXAUN company. We focus on the fields of intelligent manufacturing and industrial automation, and provide a series of high-precision and stable measurement and control equipment, including temperature probe sensors. Our temperature probe sensors are widely used in industrial manufacturing, 環境監測, energy management and other industries with their high precision, stability and adaptability to complex environments. If you have specific needs or questions about our temperature probe sensors, please feel free to consult us. We will wholeheartedly provide you with professional answers and services. What aspect of the temperature probe sensor do you want to know?

How to choose a suitable temperature probe sensor?
When choosing a temperature probe sensor, consider the temperature measurement range, accuracy requirements, response speed and installation environment. 例如, thermocouples or platinum resistance can be selected for industrial environments, PT100 for high precision, and thermocouples for fast response.