Series:	Millenium 3
Packaging:	Bulk
Part Status:	Active
Resistance in Ohms @ 25°C:	10k
Resistance Tolerance:	--
B Value Tolerance:	--
B0/50:	--
B25/50:	--
B25/75:	--
B25/85:	--
B25/100:	--
Operating Temperature:	-20°C ~ 105°C
Length - Lead Wire:	118.11" (3.00m)
Mounting Type:	Free Hanging
Package / Case:	Cylindrical Probe, Plastic

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Temperature Sensors - NTC Thermistors

NTC thermistors (Negative Temperature Coefficient) are temperature sensors made of a semiconductor material that exhibits a decrease in electrical resistance when exposed to an increase in temperature. They are widely used in HVAC and refrigeration applications where precise temperature monitoring is essential. The 89750185 is a commonly used NTC thermistor. This article will explore its application field and working principle.

Application Field

The 89750185 is a widely popular NTC thermistor due to its broad application field. This thermistor is typically used in applications like air conditioners, freezers, chillers, dehumidifiers, and other HVAC systems. It is also used in industrial applications like liquid level monitoring for boilers, and monitoring the temperature of electric motors, power supplies, and other electrical components.In addition to these applications, the 89750185 is well-suited to medical applications such as temperature monitoring for medical equipment and incubators. Furthermore, it is ideal for automotive applications like climate control, engine management, and diagnostic systems.Applications involving environmentally-friendly energy systems, such as solar power generation, wind power generation, and geothermal power generation, also make use of the 89750185.

Working Principle

The working principle of the 89750185 NTC thermistor is based on the phenomenon of resistance change at different temperatures. As the temperature increases, the electrical resistance of the thermistor decreases. Conversely, as the temperature decreases, the electrical resistance of the thermistor increases.This phenomenon occurs because the semiconductor material of which the thermistor is composed is sensitive to temperature change. As the temperature increases, the semiconductor material becomes less resistant to electrical current, and the electrical resistance decreases. Conversely, as the temperature decreases, the semiconductor material becomes more resistant to electrical current, and the electrical resistance increases.

Conversion of Resistance and Temperature

The 89750185 NTC thermistor is equipped with a characteristic thermistor curve which allows conversion from temperature to resistance and vice versa. This characteristic curve is based on the resistance-temperature relationship of the thermistor.The resistance-temperature relationship of the 89750185 is based on the Beta coefficient, which is a parameter describing the strength of the temperature coefficient of the thermistor. The Beta coefficient of the 89750185 is 25K, which means that for each increase of 25K in temperature, the electrical resistance decreases by a factor of 1.The resistance-temperature relationship of the 89750185 is usually presented in the form of a graph, which makes it easier to convert temperature to resistance and vice versa. The graph shows that at -25 degrees Celsius, the electrical resistance of the thermistor is 10,000 ohms. As the temperature increases, the resistance decreases, and vice versa.

Conclusion

The 89750185 NTC thermistor is a popular temperature sensor that is used in a variety of applications. It is based on the principle of resistance change in response to temperature change, and its resistance-temperature relationship is described by the Beta coefficient. It is equipped with a characteristic thermistor curve that allows conversion from temperature to resistance and vice versa.

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