cgesco2d5al – co2 output 4-20ma 5000ppm probe 200mm – duct mounting

Why Choose the Carlo Gavazzi CGESCO2D5AL CO2 Duct Transmitter?

The Carlo Gavazzi CGESCO2D5AL is a reliable duct-mounted CO2 transmitter designed for accurate carbon dioxide monitoring in HVAC, ventilation and building automation systems. As part of the Carlo Gavazzi CGES environmental sensor series, it uses Non-Dispersive Infrared (NDIR) sensing technology to provide stable CO2 measurement across a range of 0–5000 ppm.

The transmitter incorporates a dual-source infrared sensing system and automatic calibration technology to compensate for long-term sensor drift. Air from the ventilation duct passes through the 200 mm probe and into the transmitter housing, where CO2 concentration is measured before being converted into a standard industrial 4–20 mA analogue output. This makes the CGESCO2D5AL straightforward to integrate with building management systems, PLCs and HVAC controllers.

With a 15–35 V DC or 24 V AC ±20% supply, 0–5000 ppm measurement range and 200 mm duct probe, the CGESCO2D5AL provides a practical solution for demand-controlled ventilation and indoor air-quality monitoring. Its robust IP65 / NEMA 4 enclosure provides additional protection for duct-mounted installations.

Key Advantages

• Accurate CO2 monitoring from 0–5000 ppm for HVAC and ventilation systems.
• 4–20 mA analogue output for straightforward integration with BMS, PLC and HVAC controllers.
• Proven NDIR carbon dioxide sensing technology for stable measurement performance.
• Automatic calibration helps compensate for long-term sensor drift.
• 200 mm probe designed specifically for ventilation duct installation.
• Flexible 15–35 V DC or 24 V AC ±20% supply.
• Low power consumption of less than 3 W.
• IP65 / NEMA 4 enclosure provides robust protection for industrial and building-services applications.

Key Features

• Carlo Gavazzi CGES environmental sensor series.
• 0–5000 ppm CO2 measuring range.
• 4–20 mA analogue output.
• Non-Dispersive Infrared (NDIR) measurement principle.
• Dual-source infrared sensing system.
• Automatic calibration for improved long-term stability.
• 200 mm duct probe.
• Standard mounting flange for convenient duct installation.
• 15–35 V DC or 24 V AC ±20% supply voltage.
• Power requirement of less than 3 W.
• Typical response time of less than 120 s.
• Warm-up time of less than 5 min.
• IP65 / NEMA 4 protection.
• CE and RoHS compliant.

Reliable CO2 Monitoring for HVAC and Ventilation Systems

Carbon dioxide concentration is widely used as an indicator of occupancy and indoor air quality in commercial and industrial buildings. By continuously measuring CO2 levels within ventilation ductwork, the Carlo Gavazzi CGESCO2D5AL enables HVAC control systems to adjust fresh-air ventilation according to actual demand, helping maintain comfortable indoor conditions while avoiding unnecessary ventilation.

The CGES transmitter uses NDIR technology, where infrared absorption is used to determine the concentration of carbon dioxide in the sampled air. Its automatic calibration system compensates for ageing-related drift of the sensing element, supporting stable long-term measurement. The standard 4–20 mA output allows the measured CO2 concentration to be transmitted directly to compatible building management and industrial control equipment.

Typical Applications

• HVAC and ventilation control systems.
• Demand-controlled ventilation.
• Building management systems (BMS).
• Commercial building indoor air-quality monitoring.
• Schools, colleges and educational facilities.
• Offices and public buildings.
• Industrial ventilation systems.
• Air handling units and ventilation ductwork.
• Energy-efficient building automation systems.