Digital Relative Humidity and Temperature Sensors

November 2011:- Honeywell introduced the new HumidIcon Digital Humidity/Temperature Sensors, HIH-6130/6131 Series, offering industry- leading accuracy, stability, and energy efficiency in a lowest total cost solution that combines digital output relative humidity and temperature sensing. This new product is designed for potential use in HVAC-refrigeration, respiratory therapy, medical incubators, and medical microenvironment applications.

HumidIcon Digital Humidity/Temperature Sensors have an industry-leading Total Error Band that provides the sensor’s true accuracy of ±5 %RH over a compensated temperature range of 5 °C to 50 °C [41 °F to 122 °F] and 10 %RH to 90 %RH. Total Error Band, which includes all sources of error that a sensor might see, effectively eliminates individual sensor testing and calibration, supports system accuracy and warranty requirements, helps to optimize system uptime, and provides excellent sensor interchangeability.

The new series offers industry-leading long-term stability of 1.2 %RH over five years. Many competitive humidity sensors need to go through a 12-hour at 75 %RH rehydration process (which requires special equipment chambers) to correct reflow temperature offset. The Honeywell HumidIcon device only requires a 5-hour rehydration process under ambient conditions (>50 %RH). This long term stability minimizes system performance issues, helps support system uptime by eliminating the need to service or replace the sensor during its application life, and eliminates the need to regularly recalibrate the sensor in the application, which can be inconvenient and costly.

Potential applications for the Honeywell HumidIcon Digital Humidity/Temperature Sensor include providing precision relative humidity and temperature measurement for:

• HVAC/R systems, thermostats, humidifiers/de-humidifiers, and humidistats to maintain occupant comfort and ideal storage humidity/temperature while achieving low energy consumption, supporting system accuracy and warranty requirements, maximizing system uptime, and improving overall system quality.
• Respiratory therapy such as sleep apnea machines and ventilators, to enhance patient comfort, safety, and treatment effectiveness with warm and humidified air.
• Incubators/microenvironments to support critical processes and experiments, enhancing process efficiency with desired climate conditions.
• Compressed air lines condensation removal; dry compressed air is critical for customer process control measurement.
• Ground-based and airborne weather stations, allowing real time and highly accurate monitoring and reporting of actual weather conditions.