HIH9121-021-001 Sensors, Transducers

HiH9121-021-001 is a non-dispersive infrared (NDIR) method humidity and temperature sensor. It is ideal for commercial, industrial, and medical applications due to its low power consumption, fast response time, small size, and relatively low cost. The HiH9121-021-001 measures absolute humidity in the range from 0-100% relative humidity (RH). It can also measure temperature from -40°C to +90°C.

Application Field

Humidity and temperature sensors like the HiH9121-021-001 are used in a variety of applications, including HVAC/R (heating, ventilation, air conditioning, and refrigeration) control systems, industrial process and control, and consumer products. It is also commonly used in laboratories, medical and scientific instrumentation, and environmental chambers.

The HiH9121-021-001 is capable of measuring and detecting moisture in the air as well as other gases, and is often used to monitor air quality or humidity levels in a variety of conditions. For example, in HVAC/R systems the humidity level must be monitored in order to prevent condensation. In medical and scientific instrumentation, humidity levels must be monitored to ensure accuracy and reliability of the measurements.

Working Principle

The HiH9121-021-001 utilizes a non-dispersive infrared (NDIR) method to measure moisture and temperature. The sensor uses an infrared light source and a photodiode to detect the presence of water vapor in the air. When the infrared light is transmitted through air, it is absorbed by the water molecules and the photodiode measures the amount of light absorbed. The amount of light absorbed is directly proportionate to the water content in the air and can be used to accurately calculate relative humidity.

The HiH9121-021-001 also has the ability to measure temperature by using a thermistor. A thermistor works by measuring the resistance of a metal or semiconductor device as a function of temperature. As the temperature changes, the resistance of the thermistor also changes which can be measured and used to calculate temperature. This data can be used along with the measured humidity to estimate the dew point temperature.

The HiH9121-021-001 is a cost effective and easy to install solution for measuring relative humidity and temperature in commercial, industrial, and medical applications. It is a reliable and accurate sensor that is capable of providing consistent, accurate readings. The NDIR technology and thermistor allow for easy and precise measurements of moisture and temperature and it is the perfect solution for any application that requires reliable real-time data.