MAMAC Systems HU-921-1-VDC-8 Humidity Transducer

The MAMAC HU-921-1-VDC-8 Humidity Transducer is a professional-grade environmental sensor designed for high-precision relative humidity monitoring in demanding commercial and industrial building automation systems. As a versatile HVAC humidity sensor, this unit provides a stable VDC output signal to interface seamlessly with most DDC controllers. Engineered with a bulk polymer capacitive sensing element, it maintains excellent linearity and long-term stability across a 0% to 100% RH range. This specific model features an integrated 10K Ohm NTC thermistor, allowing technicians to capture both humidity and temperature data from a single enclosure, reducing wiring labor and installation footprints. The MAMAC Systems humidity transducer is housed in a rugged enclosure suited for duct mount humidity applications, ensuring reliable performance in data centers, clean rooms, and complex HVAC air handling units where precise atmospheric control is non-negotiable for system efficiency.

Technical Benefits for Contractors:

• Dual-Sensing Integration: Combines relative humidity and temperature measurement into one device using a 10K Ohm NTC thermistor sensor.
• Universal Compatibility: Field-selectable VDC output ensures the transducer communicates effectively with various building management system (BMS) inputs.
• High-Accuracy Performance: Utilizing high-tolerance capacitive elements to prevent drift and ensure tight environmental tolerances.
• Industrial Build Quality: Specifically engineered for commercial environments, providing resistance to contaminants and harsh airflow conditions.
• Simplified Calibration: Designed for long-term field stability, minimizing the need for frequent recalibration during routine maintenance cycles.

Common Technical Questions:

What is the primary power requirement for the HU-921-1-VDC-8?
This humidity transmitter typically operates on standard 24 VAC/VDC power, though you should always verify the specific voltage range on the technical datasheet before wiring the controller.

Can the 10K Ohm NTC thermistor be used with any DDC controller?
The 10K Ohm NTC curve is a standard Type II or Type III thermistor profile common in the industry; ensure your controller is configured for the matching resistance-temperature curve.

Is this unit suitable for outdoor air monitoring?
While the MAMAC HU-921 series is robust, duct-mounted versions are optimized for internal airflow; for direct outdoor applications, ensure proper weather shielding and aspiration to maintain sensor accuracy.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.