Description
The MAMAC Systems HU-227-3-VDC-8 is a precision-engineered outside air humidity and temperature transducer designed for demanding building automation and HVAC control applications. Combining dual-parameter sensing in a single rugged housing, this transducer delivers reliable, accurate environmental data for outdoor installations where performance and durability are critical.
Humidity Sensing
The HU-227-3-VDC-8 provides ±3% accuracy humidity measurement, making it well-suited for energy management systems, economizer controls, and outdoor air quality monitoring. The field-selectable voltage output allows installers to configure the transducer to match the requirements of virtually any BAS or DDC controller without additional hardware.
Temperature Sensing
Integrated temperature sensing is achieved via a 10,000 Ohm NTC thermistor (Carel compatible), a widely supported sensor type across leading building automation platforms. This ensures seamless integration with existing control systems and straightforward replacement in retrofit applications.
Key Features & Specifications
- Humidity accuracy: ±3%
- Field-selectable output: 0–5 VDC or 0–10 VDC
- Temperature sensor: 10,000 Ohm NTC thermistor (Carel)
- Supply voltage: 12–40 Vdc / 12–35 Vac
- Application: Outside / outdoor air
- Dual-parameter sensing: relative humidity and temperature in one unit
- Compatible with BAS, DDC, and building automation controllers
Installation & Compatibility
The wide supply voltage range of 12–40 Vdc / 12–35 Vac accommodates a broad variety of power sources commonly found in commercial HVAC control panels. The field-selectable 0–5 VDC or 0–10 VDC output eliminates the need for signal converters, simplifying wiring and commissioning. Designed for outdoor air applications, this transducer is built to withstand the environmental conditions typical of exterior HVAC installations.
Applications
- Building automation systems (BAS)
- Direct digital control (DDC) systems
- Economizer and outdoor air control
- Energy management and monitoring
- Commercial HVAC humidity and temperature sensing
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