TrolMaster Digital CO₂ PPM Controller (BETA-8)

The TrolMaster Digital CO₂ PPM Controller (BETA-8) is a precise, easy-to-use standalone controller that automatically manages supplemental CO₂ equipment in grow rooms, greenhouses, and controlled growing environments. Equipped with a remote NDIR CO₂ sensor, digital display, built-in photocell, adjustable deadband, and fuzzy-logic control, the BETA-8 helps maintain programmed CO₂ concentrations without requiring a separate environmental controller.

Simply select the desired CO₂ setpoint, and the BETA-8 monitors the growing area and automatically operates compatible CO₂ regulators or generators as needed. Its remote sensor includes a 16 ft (4.88 m) cable, allowing it to be positioned close to the plant canopy for more representative CO₂ measurements.

Automatic CO₂ PPM Control

The BETA-8 continuously monitors CO₂ levels and controls connected supplemental CO₂ equipment according to the user-selected setpoint.

Its adjustable control range of 400–2,000 ppm allows growers to select the desired CO₂ concentration for their growing environment.

When CO₂ levels fall below the programmed setting, the controller can activate the connected CO₂ equipment. Once the target range is reached, the BETA-8 automatically adjusts or stops CO₂ delivery according to its control settings.

Precision NDIR CO₂ Sensor

The BETA-8 uses an NDIR (Non-Dispersive Infrared) CO₂ sensor to continuously measure carbon dioxide concentration.

The remote sensor offers ±50 ppm accuracy and can be positioned independently of the controller using the included 16 ft (4.88 m) cable.

This allows the sensor to be installed closer to the plant canopy, where CO₂ measurements are typically most useful for environmental management.

Built-In Day/Night Photocell

A built-in photocell automatically detects whether the growing environment is in daylight or nighttime conditions.

During the day, the BETA-8 controls supplemental CO₂ according to the selected setpoint.

At night, the controller automatically disables CO₂ output, helping prevent unnecessary CO₂ injection when supplemental CO₂ is not required.

Fuzzy-Logic CO₂ Control

The BETA-8 includes a fuzzy-logic control function designed to improve the accuracy of compressed CO₂ systems.

When CO₂ concentration is well below the programmed setpoint, the controller can fully activate the connected CO₂ equipment. As the measured CO₂ concentration approaches the target level, fuzzy-logic control adjusts operation more precisely to help reduce overshooting the desired setpoint.

This function is particularly useful when controlling compressed CO₂ injection systems.

Adjustable CO₂ Deadband

The BETA-8 provides an adjustable CO₂ deadband range of 20–200 ppm.

The deadband determines how far the CO₂ concentration can move beyond the programmed setpoint before the controller changes the output state.

This allows growers to customize the controller’s response based on the CO₂ equipment being used and the desired level of environmental control.

Min/Max CO₂ Recall

The controller can recall minimum and maximum CO₂ readings, making it easier to review fluctuations within the growing environment.

This feature provides useful information for evaluating how consistently the system maintains CO₂ concentrations over time.

Digital Display

The BETA-8 features a clear digital display for viewing CO₂ readings and controller settings.

Growers can quickly check the current PPM level, adjust the target setpoint, configure the deadband, and manage the controller directly from the unit.

Recalibratable CO₂ Sensor

The remote CO₂ sensor can be recalibrated when necessary to help maintain long-term measurement accuracy.

Proper calibration and placement can help keep the BETA-8 operating accurately over many growing cycles.

Key Features

• Standalone digital CO₂ PPM controller
• Designed for CO₂ regulators and generators
• 400–2,000 ppm CO₂ control range
• Precision NDIR CO₂ sensor
• CO₂ accuracy of ±50 ppm
• Remote sensor with 16 ft (4.88 m) cable
• Digital display
• Built-in day/night photocell
• Automatically disables CO₂ output at night
• Adjustable 20–200 ppm deadband
• Fuzzy-logic control for improved compressed CO₂ management
• Minimum and maximum CO₂ recall
• Recalibratable CO₂ sensor
• Output relay rated up to 10A
• Simple standalone operation
• Suitable for grow rooms, greenhouses, and controlled growing environments

Product Specifications

Package Contents

• 1 × TrolMaster BETA-8 CO₂ PPM Controller
• 1 × Remote CO₂ Sensor

Compatible With

The TrolMaster BETA-8 is a standalone controller designed to operate compatible supplemental CO₂ equipment, including:

• CO₂ regulators
• Compressed CO₂ systems
• CO₂ generators
• Compatible 120V CO₂ equipment within the controller’s electrical rating

Because the BETA-8 combines its own CO₂ sensor and control functions, it does not require a Hydro-X or another central TrolMaster environmental controller for normal operation.

Simple Standalone CO₂ Automation

Maintaining consistent CO₂ concentrations manually can be difficult, especially as environmental conditions and plant demand change throughout the day. The TrolMaster BETA-8 combines continuous CO₂ measurement, automatic equipment control, day/night detection, and fuzzy-logic operation in one straightforward controller.

For growers seeking an independent solution to automatically manage supplemental CO₂ without installing a full environmental-control platform, the TrolMaster Digital CO₂ PPM Controller (BETA-8) provides precise, convenient, easy-to-configure CO₂ control.