Carlo Gavazzi ESCOD3A duct-mounted carbon monoxide transmitter with 0–300 ppm electrochemical measurement and 4–20 mA current output for HVAC monitoring.
The Carlo Gavazzi ESCOD3A is a reliable carbon monoxide (CO) duct transmitter designed for accurate gas monitoring in HVAC systems, ventilation equipment and environmental control applications. Part of the Carlo Gavazzi ESCO environmental sensor series, it provides electrochemical CO measurement with a 4–20 mA current output for easy connection to building management systems and automation controllers.
This transmitter is designed to monitor non-aggressive gases in ventilation systems and provide dependable feedback for air quality management. Its duct-mounted configuration, compact housing and standard industrial current output make it suitable for integration into HVAC control systems and environmental monitoring installations.
With a 0–300 ppm CO measuring range, 4–20 mA analogue output and duct mounting design, the ESCOD3A provides accurate carbon monoxide monitoring for ventilation systems, indoor parking areas and building automation applications.
The Carlo Gavazzi ESCOD3A measures carbon monoxide concentration to provide accurate information for ventilation management and environmental monitoring systems. Its standard 4–20 mA output enables stable signal transmission to PLCs, controllers and building automation systems.
The ESCO series is designed for engineers requiring dependable gas sensing, straightforward installation and reliable operation in HVAC and indoor environmental monitoring applications.
| Current | 3 A |
|---|---|
| Manufacturer | Carlo Gavazzi |
| Series | ESCO |
| Model | ESCOD3A |
| Product type | CO environmental transmitter |
| Mounting type | Duct mounting |
| Sensor technology | Electrochemical CO sensor |
| Measurement range | 0–300 ppm CO |
| Output signal | 4–20 mA |
| Supply voltage | 8–35 V DC / 12–30 V AC |
| Protection rating | Housing IP65, sensor IP20 |
| Signal connection | 3-wire |
| Accuracy | ±3% of full scale |
| Response time | t90 approx. 60 seconds |
| Operating temperature | 0 to +50 °C |
| Humidity range | 5–95% RH non-condensing |
| Electrical connection | M12 connector |
| Housing material | PC fire-resistant class PC-110 |
| Weight | approx. 205 g |
The ESCOD3A is used for measuring carbon monoxide concentration in HVAC ducts, ventilation systems and environmental monitoring applications.
The transmitter measures carbon monoxide concentrations from 0 to 300 ppm.
The ESCOD3A provides a 4–20 mA current output for connection to control and automation systems.
The transmitter uses an electrochemical CO sensor for reliable carbon monoxide measurement.
The ESCOD3A is designed for duct mounting in HVAC systems, ventilation equipment and environmental monitoring installations.
Carlo Gavazzi environmental sensors provide accurate CO monitoring solutions for HVAC control, building automation and ventilation management systems.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...