Industrial temperature sensor

Industrial temperature sensors are devices used to measure and monitor temperature in various industrial environments. They are designed to operate in extreme conditions, meeting accuracy and reliability requirements. Industrial temperature sensors typically have a wide range of features and options to suit a wide variety of applications.

Here are some common types of industrial temperature sensors:

1. Thermocouples: This is a type of sensor based on the Seebeck principle, which uses the effect of creating an electric potential between two different metal wires when they are connected at both ends and placed at different temperatures. Thermoelectric sensors are usually capable of operating at very high and very low temperatures, but their accuracy is often lower than that of other types.
2. RTD sensor (Resistance Temperature Detectors): RTD sensor uses the principle of changing the resistance of metal wire (usually Platinum) according to temperature. RTD sensors are generally more accurate than thermoelectric sensors, and they are often used in applications that require high accuracy and stability.
3. Thermistors: Thermistors are sensors based on the principle of changing the resistance of semiconductor materials when the temperature changes. They are generally highly sensitive and respond quickly to temperature changes.
4. Infrared Temperature Sensors: This type of sensor uses the reflection or emission of infrared light from a surface to measure temperature. They are commonly used to measure the temperature of non-contact surfaces.
5. Non-contact temperature sensors: Includes non-contact infrared sensors or ultrasound to measure temperature remotely without in direct contact with the measuring surface.
6. Thermal Wire Sensors: These are special types of thermal wires used to sense temperature by measuring changes in impedance or current through them.

Industrial temperature sensors can be used in many different industries, such as in manufacturing, manufacturing processes, temperature control in devices and systems, safety testing and many more applications.

Structure, principle of temperature sensor

A temperature sensor is a device designed to convert temperature changes into an electrical signal. The construction and working principle of different types of temperature sensors can vary depending on the type of sensor, but here I will explain some general principles.

The basic structure of the temperature sensor includes:

1. Heat conductor: This is the part of the sensor that is in direct contact with the temperature source to be measured. Heat conductors are usually materials with good heat dissipation such as metal or other highly conductive materials.
2. Converter section: This section usually consists of a pair of dissimilar metal wires (in the case of thermocouples) or a metal wire (in the case of RTDs) capable of generating a voltage or resistance signal that varies based on temperature.
3. Protective Case: A protective cover is commonly used to protect the sensor from environmental factors such as dirt, moisture, and mechanical impact.

General working principle of temperature sensors:

1. Thermocouples: The principle of operation of thermocouples is based on the Seebeck effect, in which two dissimilar metal wires are joined at one end (called a “junction” or “hot spot”). When one end is exposed to a heat source (the temperature to be measured), the temperature difference between the two ends of the wire pair creates an electric potential. This potential can be measured and converted into a temperature value.
2. RTD (Resistance Temperature Detector): RTD uses the principle of changing the resistance of the metal wire when the temperature changes. The metal wire is usually platinum, and its resistance varies in a linear manner with temperature. This change is measured and converted into a temperature value.
3. Thermistors: Thermistors are based on changing the resistance of a semiconductor material as temperature changes. NTC (Negative Temperature Coefficient) thermistor type decreases resistance as temperature increases, while PTC (Positive Temperature Coefficient) thermistor type increases resistance as temperature increases. This change is used to calculate the temperature value.
4. Non-contact temperature sensors: Non-contact temperature sensors typically use the principle of infrared light, sound, or ultrasonic waves to measure temperature remotely without the need for direct contact with the required surface. measure.

Temperature sensor PT100

The PT100 temperature sensor is a type of temperature sensor based on the principle of changing the resistance of a metal wire when the temperature changes. The PT100 is a specific form of temperature sensor based on this principle, where “PT” stands for Platinum, and “100” represents the resistance threshold at 0 °C.

The operating principle of the PT100 temperature sensor is based on measuring the change in resistance of a platinum metal wire, usually Platinum, when the temperature changes. The resistance of a metal wire varies linearly with temperature, and this is why the PT100 sensor is often considered an accurate and stable sensor in precision temperature measurement applications.

There are two main types of PT100:

1. PT100 3-wire: There are three wires in contact with platinum metal wire. The first two wires are usually used to create a resistor circuit that matches the sensor’s resistance value, while the third wire is used to measure the actual resistance value of the sensor.
2. PT100 4-wire: There are four wires in contact with platinum metal wire. The first two pairs of wires are used to create the correct resistance circuit, and the other two are used to measure the actual resistance value without being affected by capacitors or instability in the wiring.

The PT100 sensor is commonly used in applications that require high accuracy in temperature measurement and control, such as in industry, medical, and scientific research. To read data from the PT100 sensor, it is necessary to use devices that read and convert the resistance to the corresponding temperature value.

Can K . temperature sensor

Temperature sensor can K (Type K Thermocouple) is a type of thermocouple sensor that belongs to the sensor code system according to ANSI (USA) or IEC (International) standards.

The temperature sensor can K is a pair of special metal wires connected at one end to create a Seebeck effect, where the principle is the generation of a potential based on the temperature difference between the terminals. of the wire pair. This particular type of K can is made from combining two different types of metal wire, usually NiCr-NiAl or NiCr-AuFe, to create a wide measuring range from about -200 °C to 1,372 °C.

The main advantages of the can K temperature sensor include:

1. Wide temperature range: Type K can operate at extremely low and extremely high temperatures, making it suitable for a wide variety of applications.
2. Low cost: K-sensors are generally less expensive than some other types of temperature sensors.
3. Advantages in oxidizing and other gaseous media: Type K can perform well in oxidizing and gaseous environments, making it suitable for industrial environments.

However, the temperature sensor can K also has some limitations:

1. Accuracy: The accuracy of K can sensor is usually not as high as some other types of temperature sensor like RTD.
2. Long time stability: The K can sensor has a tendency to wear and change over time, especially at high temperatures.
3. Interference tolerance: This type of sensor is susceptible to electromagnetic interference and magnetic interference.

K temperature sensors are commonly used in many industrial applications such as temperature control in furnaces, boilers, kilns, drying equipment and many other applications that require temperature measurement over a wide range.

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