Carlo Gavazzi ESCOW3A is a wall-mounted electrochemical carbon monoxide transmitter with a 0–300 ppm measuring range and 4–20 mA analogue current output for HVAC, ventilation and building automation applications.
The Carlo Gavazzi ESCOW3A is a compact wall-mounted carbon monoxide (CO) transmitter designed for continuous gas monitoring in HVAC, ventilation and building automation applications. It uses electrochemical sensing technology to measure carbon monoxide concentration and convert the measurement into a standard analogue current signal for integration with compatible control systems.
The ESCOW3A provides a 0–300 ppm CO measuring range with a 4–20 mA analogue output, making it suitable for connection to HVAC controllers, PLCs and building management systems. Its wall-mounted configuration is particularly suited to monitoring occupied areas and other indoor locations where carbon monoxide levels form part of an environmental control or ventilation strategy.
With an 8–35 V DC or 12–30 V AC supply, M12 plug connection and robust plastic enclosure, the ESCOW3A provides straightforward installation in building automation systems. The transmitter housing offers IP65 protection, while the sensing element is rated IP20, supporting dependable indoor CO monitoring applications.
Carbon monoxide transmitters continuously measure CO concentration and provide a proportional electrical signal that can be monitored by HVAC controllers, PLCs and building management systems. This allows ventilation and environmental control equipment to respond to changing carbon monoxide levels as part of an appropriately designed building-control strategy.
The ESCOW3A combines an electrochemical sensing element with a standard 4–20 mA current output, providing a widely used analogue interface for industrial and building automation equipment. Its wall-mounted construction makes it suitable for monitoring indoor areas where continuous carbon monoxide measurement is required.
| Current | 3 A |
|---|---|
| Manufacturer | Carlo Gavazzi |
| Model | ESCOW3A |
| Product type | Carbon monoxide transmitter |
| Measured gas | Carbon monoxide (CO) |
| Sensing technology | Electrochemical |
| Mounting type | Wall mounting |
| CO measuring range | 0–300 ppm |
| Accuracy | ±3% |
| Analogue output | 4–20 mA |
| Power supply | 8–35 V DC / 12–30 V AC |
| Supply current | 60 mA |
| Electrical connection | M12 plug |
| Housing material | Plastic |
| Housing protection rating | IP65 |
| Sensing element protection rating | IP20 |
| Operating temperature | 0 to +50 °C |
| Standardised dimensions (W × H × D) | 80 × 140 × 38 mm |
The ESCOW3A measures carbon monoxide concentration across a 0–300 ppm range for HVAC, ventilation and building automation applications.
The ESCOW3A uses an electrochemical sensing element designed to measure carbon monoxide concentration.
The transmitter provides a standard 4–20 mA analogue current output for connection to compatible HVAC controllers, PLCs and building management systems.
The ESCOW3A has a specified accuracy of ±3% for carbon monoxide measurement.
The ESCOW3A is designed for wall mounting and can be used in indoor HVAC, ventilation and environmental monitoring applications.
The transmitter operates from 8–35 V DC or 12–30 V AC, providing flexibility for integration with common building and industrial control systems.
The transmitter's plastic housing provides IP65 protection, while the carbon monoxide sensing element is rated IP20.
Carlo Gavazzi environmental transmitters provide practical sensing solutions for HVAC, ventilation and building automation systems, helping engineers integrate carbon monoxide measurements into environmental monitoring and automated ventilation applications.
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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...