Automation Components Inc (ACI) A/ENT Controller

The Automation Components Inc (ACI) A/ENT is a high-precision enthalpy controller engineered to optimize HVAC efficiency by monitoring ambient temperature and humidity. Primarily designed for economizer control and original equipment manufacturers (OEMs), this unit effectively converts capacitive humidity sensor data into a linear 2-wire, 4 to 20 mA output. With a measurement scale spanning 0 to 50 BTUs, the device provides critical input for systems requiring precise enthalpy measurement to determine the most energy-efficient cooling strategy. The A/ENT is built for long-term reliability in demanding environments, featuring a conformally coated circuit board that resists moisture and contaminants. To ensure accuracy across diverse geographical locations, the unit includes field-selectable elevation adjustments, allowing for compensation in pressure changes. When integrated alongside the A/DIFF-EN, it facilitates differential enthalpy logic, enabling smart switching between indoor and outdoor air sources based on real-time heat content. This robust industrial HVAC sensor is the ideal solution for sophisticated building automation and ventilation management.

• Optimized Energy Savings: Enables precise economizer logic to reduce mechanical cooling costs using outdoor air.
• Enhanced Durability: The conformally coated PCB ensures reliable performance in high-humidity or outdoor HVAC environments.
• Flexible Integration: Provides an industry-standard 4 to 20 mA signal compatible with most BAS and PLC systems.
• Geographic Adaptability: Jumper-selectable elevation settings maintain high accuracy regardless of your location's altitude.
• Compact Design: Small footprint allows for easy installation within rooftop units or return air ducts.

How does this assist with economizer control?
The A/ENT measures the total heat content (enthalpy) of the air rather than just temperature. This allows your system to bring in outdoor air only when it is truly more efficient than cooling recirculated air, preventing high-humidity air from entering the space.

Can this be used for differential enthalpy?
Yes, when used in conjunction with the A/DIFF-EN, the unit can compare return air enthalpy against outdoor air enthalpy to ensure the most efficient air source is always selected.

Is the unit weather-resistant?
While the circuit board is coated to protect against moisture, the unit should be mounted in a protected area such as under an eave, shield, or inside a rooftop unit (RTU) to avoid direct exposure to rain and extreme weather.

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.