VDL - digital CO2 controller – precise measurement and control of CO₂, temperature and humidity

The VDL Digital CO₂ Controller is a wall-mounted controller designed to accurately measure and automatically regulate carbon dioxide (CO₂) concentrations in enclosed spaces. It uses NDIR sensor technology and an external probe to monitor CO₂, temperature, and humidity. Suitable for greenhouses, grow rooms, laboratories, and workspaces.

Detailed specifications

• Measurement technology: NDIR sensor – ensures stability and durability.
• Display: Color LED or LCD screen with separate sections for CO₂, temperature, humidity, current time, and alarms.
• Device control: Built-in relay with a socket allows external devices (e.g., a CO₂ generator or fan) to be activated/deactivated according to CO₂ levels.
• Smart modes:
  • Plant Mode – activates a CO₂ generator when levels are low.
  • Human Mode – starts ventilation when CO₂ levels are high.
• Day/Night sensor: Automatically detects lighting and optimizes operation according to day or night mode.
• Alarms: Programmable audible alerts for excessively high CO₂ concentrations.
• Historical data: Recording and graphing of maximum and minimum values for the past week.
• Measurement range and accuracy:
  • CO₂: 0–9999 ppm
  • Temperature: 0–50 °C
  • Humidity: 5–95 % RH
  • Resolution:
    • CO₂: 1 ppm (0–1000); 5 ppm (1000–2000); 10 ppm (>2000)
    • Temperature: 0.1 °C
    • Humidity: 1 % RH
  • Accuracy:
    • CO₂ < 2000 ppm: ±50 ppm or ±5%
    • CO₂ > 2000 ppm: ±10%
    • Temperature: ±0.6 °C
    • Humidity: ±5 % (25 °C, 10–90 % RH) / ±7 % (other ranges)
• Probe with cable: External probe with a cable approximately 4.5 m long for flexible positioning in the growing environment.
• Dimensions and weight:
  • Control panel: approx. 15.6 × 11.6 × 3.9 cm
  • Probe: approx. 11.7 × 3.5 × 2.7 cm
  • Weight: ~750 g
• Operating conditions: 0–50 °C, 5–95 % RH
• Warm-up: Ready to use after about 30 seconds.

Usage recommendations

• Mount the wall controller in a convenient location, ensuring the probe cable is positioned among the plants for precise measurements.
• Choose “Plant Mode” to automate CO₂ delivery using a generator. Or “Human Mode” for safe ventilation when levels are excessive.
• Use the day/night function to optimize resource savings and maintain safe conditions.
• Program alarms for high concentrations and set the desired CO₂ levels and hysteresis.
• Track weekly minimum and maximum values to analyze and optimize the control process.

Summary – Benefits

• Accuracy and reliability: NDIR technology and high measurement accuracy.
• Integrated control: Control external devices based on CO₂ levels for effective automation.
• Precise monitoring: CO₂, temperature and humidity on one screen.
• Versatile: Suitable for greenhouses, laboratories, home growing or workspaces.
• Future maintenance: Probe replacement for extended service life.
• Easy to use: Quick setup, calibration and programming.