MAMAC Systems HU-226-3-VDC-17 Duct Humidity Temperature Sensor 3% Accuracy 20K Ohm Thermistor

The MAMAC Systems HU-226-3-VDC-17 is a high-performance duct-mounted humidity and temperature sensor specifically designed for demanding HVAC and building automation system applications. This dual-function transmitter combines precise humidity measurement with accurate temperature sensing in a rugged, industrial-grade package.

Key Features:

• 3% accuracy rating with NIST traceable calibration for reliable performance
• Measures relative humidity from 0% to 100% with field-selectable 0-5 VDC or 0-10 VDC output
• 20,000 ohm NTC thermistor for temperature measurement
• Cross-linked polymer capacitive humidity sensor protected by ePTFE (expanded Teflon) filter media
• Temperature compensated for -30°F to 130°F (-35°C to 55°C) operation
• NEMA 4 (IP-65) rated 18-gauge cold-rolled steel enclosure for harsh environments
• Non-interacting zero and span adjustments for easy calibration
• Short circuit and reverse polarity protection
• RoHS compliant and EMC tested

The HU-226 series features an ultra-fast response sensing element that is unaffected by prolonged exposure to condensing humidity, fog, salt air, pollutants, and other contaminants. Each unit is individually calibrated in an environmental test chamber to ensure accuracy and reliability. The rugged construction and comprehensive protection features make this sensor ideal for commercial HVAC systems, industrial monitoring applications, and building automation projects where dependable humidity and temperature measurement is critical.