Temperature sensor refers to a sensor that can sense temperature and convert it into a usable output signal. Temperature sensor is the core part of temperature measuring instruments and there are many varieties. According to the measurement method, it can be divided into two categories: contact type and non-contact type. According to the sensor material and electronic component characteristics, it can be divided into two categories: thermal resistor and thermocouple.

RTD vs PT100 Resistance Sensor Temperature Measurement Probe

RTD vs PT100: Sensor Resistance in Temperature Measurement Probe

The main difference between an RTD and a Pt100 is the material used for the sensing element: PT100 is a specific type of RTD thermal resistor, and its name comes from “Platinum” (platinum) and “100” (100 ohms at 0°C). It is the most commonly used RTD sensor and is widely used in industrial process control, laboratory measurement and other fields that require high-precision temperature monitoring. The advantages of PT100 include:

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Temperature acquisition of 4-wire PT100 temperature sensor

Temperature Acquisition of 2, 3, and 4-Wire PT100 Temperature Sensors

A PT100 sensor acquires temperature by measuring the change in its electrical resistance, which directly correlates to the temperature it is exposed to; as the temperature increases, the resistance of the platinum element within the sensor also increases, allowing for a precise calculation of the temperature based on this resistance change; essentially, the “100” in PT100 signifies that the sensor has a resistance of 100 ohms at 0°C, and this value changes predictably with temperature fluctuations.

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Temperature sensor probe T100 high temperature -50~260 cable

Resistors and Circuits of PT100 and PT1000 Metal Thermal Resistor Sensor Probes

The temperature measurement range of the commonly used platinum resistance Pt100 sensor probes is -200~850℃, and the temperature measurement ranges of Pt500, Pt1000 sensor probes, etc. are successively reduced. Pt1000, temperature measurement range is -200~420℃. According to the IEC751 international standard, the temperature characteristics of the platinum resistor Pt1000 meet the following requirements:

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DS18B20 temperature sensor 1-wire waterproof cable + adapter board set

Custom DS18B20 Sensor Probe & 1-Wire Cable Assembly

The DS18B20 sensor communicates using the “1-Wire” protocol, which means it uses a single data line for all communication with a microcontroller, allowing multiple sensors to be connected on the same line and identified by their unique 64-bit serial code; this single data line is pulled high with a resistor and the sensor transmits data by pulling the line low during specific time slots to send bits of information.

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DS18B20 Temperature Sensor Digital Thermometer Probe + Terminal Adapter Module with Wire Set

Making a Digital Thermometer with DS18B20 Digital Temperature Sensor

This article explains in detail the application of custom DS18B20 digital temperature sensor in building a digital thermometer. Including working principle, hardware connection, software programming and simulation implementation. Provide complete protues simulation diagram, C source code and result analysis to help readers deeply understand and practice the use of DS18B20.

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NTC temperature sensors are used in electrical appliance temperature acquisition

Temperature and resistance of NTC temperature sensor applications

NTC temperature sensor is a thermistor sensor (measuring temperature range: -30°C to +200°C (-22°F to +392°F) waterproof probe). Its resistance value changes with temperature. NTC (Negative Temperature Coefficient) means that its resistance value is negatively correlated with temperature, that is, as the temperature rises, the resistance value will decrease; conversely, as the temperature decreases, the resistance value will increase. This characteristic makes NTC temperature sensor very suitable for measuring temperature.

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