Description
The Ace Instruments AI-CO2-RLCD is designed to meet the challenging requirements of mushroom farms. Equipped with photoacoustic sensors, the Carbon Dioxide Monitor features measuring range options up to 20,000ppm. The instrument also features an IP64 waterproof enclosure, customized for high humidity environments in mushroom farming. The durable monitor brings accurate and reliable CO2 sensing for optimal environment condition control and maintenance at mushroom farms. The instrument features 4-20mA/0-10 VDC output and optional RS485 Modbus communication.
How It Works
The key difference between a CO₂ controller and a CO₂ transmitter lies in what happens after the reading is taken. A CO₂ transmitter simply sends data to an external BMS, which then decides what action, if any, to take. The CO₂ controller skips that step entirely: it makes its own decision. When CO₂ levels exceed a user-set threshold, the controller directly switches a relay, turning on a ventilation fan or opening a damper, with no external control system required. This closed-loop logic means the device can independently manage ventilation as soon as it detects elevated CO₂, reacting in real time rather than waiting on a separate control layer.
When to Choose a Controller vs Transmitter
A CO₂ controller is the right fit for smaller buildings, retrofit projects, and single-zone applications where installing a full BMS is not justified. If you need CO₂ data logged and integrated into a broader building automation system, a transmitter is the better choice. But if the goal is a fast, independent response to poor air quality in one room or zone, the controller delivers that without the added cost and complexity of a centralized system.
Features
- Fast response photoacoustic sensor (Switzerland)
- Optional RS-485 communication
- IP64 compliant waterproof enclosure
Applications
The CO₂ Controller suits environments where independent, localized ventilation control matters most:
Server Rooms
- Heat buildup and limited fresh air exchange let CO₂ accumulate quickly in smaller or poorly ventilated equipment rooms
- The controller monitors levels continuously and automatically triggers exhaust fans or dampers when thresholds are exceeded
- Helps maintain safer air quality for on-site technicians without relying on the building's central HVAC controls
Storage Areas
- Limited airflow and infrequent occupancy can allow CO₂ to accumulate from stored materials, equipment, or occasional worker presence
- Rarely justifies a full BMS connection, making standalone relay logic a low-cost solution
- Triggers ventilation only when needed, keeping air quality in check without constant manual oversight
Small Offices
- Often lack the centralized ventilation controls found in larger commercial buildings
- Still need to manage CO₂ buildup from daily occupancy
- Automatically activates ventilation as CO₂ rises, keeping employees comfortable and alert
- Avoids the cost of integrating a building-wide automation system
Meeting Rooms
- Fluctuating occupancy causes CO₂ levels to spike quickly once a room fills up
- Responds in real time, switching on ventilation as soon as concentrations exceed the set threshold
- Steps down automatically once levels normalize
- Keeps the room comfortable without requiring manual adjustment
School Classrooms
- Dense, extended occupancy makes CO₂ management important for student focus and wellbeing
- Offers a straightforward retrofit option with no need to replace or integrate with an existing building system
- Ensures ventilation activates automatically whenever CO₂ climbs above a healthy range
Installation
The controller is designed for straightforward retrofit installation, with wall or duct mounting options and a relay output that wires directly to existing ventilation fans or dampers. Because it operates independently, there's no need to integrate with existing building controls, making setup fast even in older buildings or spaces without an existing BMS.
Specifications
Frequently Asked Questions
1. What is the AI-CO2-RLCD CO₂ Controller?
The AI-CO2-RLCD is a standalone carbon dioxide monitoring and control solution that continuously measures CO₂ concentration and automatically controls ventilation equipment such as exhaust fans, fresh air dampers, or ventilation systems. It's designed for applications requiring precise CO₂ control, including mushroom farms, greenhouses, industrial facilities, and commercial buildings. The controller features a photoacoustic CO₂ sensor, optional LCD display, analog outputs, relay control, and optional RS-485 Modbus communication.
2. What is the difference between a CO₂ transmitter and a CO₂ controller?
A CO₂ transmitter only measures and sends CO₂ readings to another system such as a PLC or BMS. A CO₂ controller not only measures CO₂ levels but also directly controls connected equipment using its relay output, helping maintain the desired CO₂ concentration automatically.
3. Why is controlling CO₂ important?
Maintaining the correct CO₂ concentration helps optimize plant growth, improve indoor air quality, increase energy efficiency, and ensure consistent environmental conditions. Automatic CO₂ control also reduces manual intervention and improves process reliability.
45. What CO₂ measurement ranges are available?
The AI-CO2-RLCD is available in multiple measuring ranges to suit different applications:
- 0 to 2,000 ppm
- 0 to 5,000 ppm
- 0 to 10,000 ppm
- 0 to 20,000 ppm
The AI-CO2-RLCD uses a high-performance Swiss photoacoustic CO₂ sensor that provides fast response, excellent long-term stability, and reliable measurements, even in high-humidity environments.
67. Can the controller automatically operate exhaust fans or ventilation systems?
Yes. The optional relay output allows the controller to automatically switch exhaust fans, ventilation systems, dampers, or other equipment on and off when CO₂ levels exceed user-defined limits.
78. Is the controller suitable for humid environments?
Yes. The AI-CO2-RLCD is housed in an IP64-rated waterproof enclosure, making it particularly suitable for high-humidity applications such as mushroom cultivation and agricultural facilities.
89. Can it be integrated with a Building Management System (BMS)?
Yes. Optional RS-485 Modbus communication allows the AI-CO2-RLCD to integrate with Building Management Systems, PLCs, SCADA systems, and other automation platforms.
91. What output options are available?
Depending on the configuration, the controller supports:
- 4 to 20 mA analog output
- 0 to 10 VDC analog output
- Relay output
- Optional RS-485 Modbus communication
Yes. An optional built-in programmable buzzer can generate High, High-High, and Extreme High CO₂ alarms, helping operators respond quickly to abnormal conditions.
11. Is an LCD display available?
Yes. The AI-CO2-RLCD is available with an optional LCD display that provides clear, real-time CO₂ readings for convenient local monitoring.
12. Does the controller require frequent maintenance?
Very little routine maintenance is required. Periodic inspection and calibration, based on the application and operating environment, help maintain long-term measurement accuracy and reliable performance.
13. Can the AI-CO2-RLCD help reduce energy costs?
Yes. By controlling ventilation equipment only when CO₂ levels require it, the controller minimizes unnecessary fan operation, reducing HVAC energy consumption while maintaining proper environmental conditions.
14. Is the AI-CO2-RLCD suitable for continuous operation?
Yes. It's designed for reliable 24/7 continuous monitoring and automatic CO₂ control in demanding industrial, agricultural, and commercial applications.
15. What are the advantages of using a dedicated CO₂ controller?
Key benefits include:
- Automatic ventilation control
- Improved environmental consistency
- Reduced manual monitoring
- Energy savings
- Accurate CO₂ regulation
- Easy integration with automation systems
- Reliable operation in demanding environments
The controller is widely used by:
- Mushroom farm operators
- Greenhouse managers
- Facility managers
- HVAC engineers
- Building automation integrators
- Industrial maintenance engineers
- Agricultural consultants
- Process engineers
ACE Instruments has over three decades of experience in environmental monitoring and control solutions.
Customers rely on ACE for:
- High-quality sensing technology
- Industrial-grade products
- Reliable automation solutions
- Custom configurations
- Calibration support
- Technical expertise
- Responsive after-sales service
Yes. The AI-CO2-RLCD can be configured to suit your application with options such as:
- Different CO₂ measuring ranges
- LCD display
- Relay output
- Analog outputs
- RS-485 Modbus communication
- Application-specific alarm settings
Our application engineers can recommend the best AI-CO2-RLCD configuration based on your CO₂ concentration range, control strategy, environmental conditions, communication requirements, and automation needs.
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