KW502J2

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NTC Thermistors are a type of temperature sensor that can be used for a variety of applications. The KW502J2 is one such temperature circuit, designed to provide high accuracy and stability for temperature measurement. In this article, we’ll discuss the application field and working principle of the KW502J2.

Application Field of KW502J2

The KW502J2 is a widely used temperature transmitter, designed for use in various temperatures. It is especially suitable for applications in industrial automation, motor control, medical equipment, home appliances, meters and instrumentation, food and beverage industry, and other temperature-critical areas. It is commonly used in environment-related testing, such as room temperature, humidity, and thermostat regulation.

The KW502J2 can detect temperatures ranging from -25 to 75℃, and can measure temperatures from 0 to 100℃ with accuracy of ±0.1℃. It provides reliable data output signals, with a resolution of 0.1°C. It also features an LED display and an easily adjustable range that can be set via a switch. The KW502J2 can be connected to analogue input devices, enabling detailed temperature measurements.

Working Principle of KW502J2

NTC thermistors are temperature-sensitive resistors which change resistance depending on the temperature of its environment. NTC thermistors, such as the KW502J2, are composed of a semiconductor material with two electrodes. When temperature increases, the resistance between the electrodes decreases. By connecting the thermistor to an appropriate circuit, the resistance change can be converted into voltage by use of a Wheatstone bridge.

The KW502J2 is designed with an on-board voltage regulator, allowing for the use of a separate power source when the relative voltage is high, such as 3.3V or 5V. The KW502J2 can also be connected to a PWM control circuit for finer adjustments to the output. This is particularly useful in motor control applications where the PWM signal can be used to dose power to a motor in temperatures above and below the desired range. This method allows for precise control over the power level output.

The KW502J2 is also equipped with an internal auto-reset circuit, which is designed to reset the temperature to a default level should it become too high or too low. This is a useful additional safety feature which can be used in applications where high temperatures may potentially cause damage.

Conclusion

The KW502J2 is an accurate and reliable temperature transmitter designed for a variety of temperature-related applications. It is especially suitable for applications in industrial automation, motor control, medical equipment, home appliances, meters and instrumentation, food and beverage industry, and other temperature-critical areas. The KW502J2 utilizes an on-board voltage regulator, PWM signal control, and an internal auto-reset circuit, allowing for the efficient detection and control of varying temperatures.

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