RTI Carbon Dioxide Monitor
Model 2156 (3% CO₂)

• Complete self contained units
• Cost effective - High quality
• Non Dispersive InfraRed (NDIR) technology
• No moving parts - gas diffusion sampling
• EcoNO-CAL gas calibration kit
• Solid state throughout - linear outputs
• Fast warm-up
• Humidity and moisture resistant
• Industrially robust: 0-5 V and 4-20 mA outputs
• Dust-tight water resistant fiberglass enclosure
• Dual adj level detect set points and relays
• Digital readout with 0.56 inch RED LED display
• Built-in Alarm beeps (switch to disable) at lowset point, on at high set point
• Dual SET Point indicators
• Industrial Safety
• Mushroom Farms
• Wineries
• Breweries
• Food Processing with CO₂ Blasters

The RTI Model 2156 is a Non-Dispersive InfraRed (NDIR) carbon dioxide monitor for use as a safety monitor. It has linear 0 to 5 volt and 4-20 mA signal outputs that are proportional to the 0 to 3% CO₂. See Application Note A11 for OSHA defined safety levels for CO₂. Dual adjustable level detects (Low Limit & High Limit) and relay contacts may be used for external control of fans, air vents, and external alarms.