High-Accuracy CO₂ Transmitter for Air Quality & Industrial Monitoring
The POLWAX Atmos Series CD50 is a high-performance carbon dioxide transmitter designed for accurate and continuous CO₂ monitoring in indoor, commercial, greenhouse and industrial environments. Its high-precision photodiode sensing technology, multiple output options and RS485 Modbus RTU communication provide reliable data for HVAC, BMS, PLC and automation systems.
Precision CO₂ Measurement for Indoor & Industrial Applications
The POLWAX Atmos Series CD50 CO₂ Transmitter is designed for continuous measurement of carbon dioxide concentration with high accuracy and stable performance.
The transmitter uses a high-precision photodiode sensor positioned behind a gas-permeable membrane to provide fast and reliable CO₂ measurement with a resolution of 1 ppm.
Multiple output configurations including RS485 Modbus RTU, 4–20 mA, 0–5 V and 0–10 V allow direct connection to HVAC controllers, PLCs, BMS, SCADA systems and greenhouse automation platforms.
Its industrial-grade ABS housing and IP65 protection make the CD50 suitable for professional indoor and industrial monitoring installations with flexible wall or pole mounting.
CD50 Technical Specifications
Technical specifications for the POLWAX Atmos Series CD50 CO₂ Transmitter.
| Specification | Atmos Series – CD50 |
|---|---|
| Measurement Range | 0–2000 ppm / 0–5000 ppm / 0–10000 ppm |
| Accuracy | 5000 ppm: ±(50 ppm + 3% F•S) (25°C) 10000 ppm: ±(50 ppm + 5% F•S) (25°C) |
| Resolution | 1 ppm |
| Warm-up Time | 2 min available / 10 min maximum |
| Sensor Type | High-precision photodiode |
| Output Options | 4–20 mA / 0–10 V |
| Power Supply | 12–24 V DC |
| Stability | <2% F·S |
| Non-linearity | <1% F·S |
| Data Update | 2 seconds |
| Humidity Range | 0–95% RH, non-condensing |
| Protection Rating | IP65 |
| Output Signals | RS485 (Modbus RTU), 4–20 mA, 0–5 V, 0–10 V |
| Mounting Options | Wall mount / Pole mount |
| Communication Protocol | MODBUS RTU |
| Housing Material | Industrial-grade ABS |
| Process Connection | High-strength, dustproof and waterproof |
Built for Accurate & Reliable CO₂ Monitoring
The CD50 combines high-resolution CO₂ measurement, flexible connectivity and rugged industrial construction for professional monitoring applications.
High Accuracy & Stability
Designed for reliable CO₂ measurement with stable performance across continuous monitoring applications.
1 ppm Resolution
Provides fine-resolution CO₂ measurement for detailed indoor air quality and process monitoring.
Wide Measuring Range
Available measurement configurations from 0–2000 ppm up to 0–10000 ppm.
Multiple Output Signals
Supports RS485 Modbus RTU, 4–20 mA, 0–5 V and 0–10 V outputs.
Rugged IP65 Design
Industrial-grade housing provides dustproof and water-resistant protection.
Flexible Installation
Wall and pole mounting options simplify installation across different environments.
Modbus RTU Communication
RS485 communication enables straightforward integration with industrial monitoring systems.
Industrial ABS Housing
Durable industrial-grade ABS construction supports long-term professional deployment.
User-Friendly Configuration
Designed for practical configuration and straightforward integration into monitoring systems.
CO₂ Monitoring Across Multiple Industries
The CD50 provides continuous carbon dioxide monitoring for indoor air quality, HVAC, greenhouse, industrial and building automation applications.
Indoor Air Quality Management
Monitor CO₂ levels in indoor environments to support ventilation and air quality management.
HVAC Systems
Provide CO₂ data for demand-controlled ventilation, HVAC optimization and air quality monitoring.
Greenhouse Climate Control
Monitor carbon dioxide concentration for greenhouse automation and controlled agricultural environments.
Industrial Safety
Support continuous CO₂ monitoring in industrial environments where carbon dioxide concentration must be controlled.
Building Management Systems
Integrate real-time CO₂ data with BMS platforms for intelligent building monitoring.
Commercial Buildings
Suitable for offices, commercial spaces and other occupied environments requiring continuous CO₂ monitoring.
Schools & Public Areas
Monitor indoor CO₂ concentration to support ventilation management in occupied public environments.
Agricultural Environments
Provide reliable CO₂ data for greenhouse and controlled agricultural monitoring systems.
Industrial Monitoring
Connect CO₂ measurements to PLC, SCADA, data acquisition and industrial automation systems.
Flexible Connectivity for CO₂ Monitoring Systems
The POLWAX CD50 is designed for straightforward integration with HVAC, BMS, PLC, SCADA and greenhouse automation systems.
- RS485 communication with Modbus RTU protocol
- 4–20 mA analog output
- 0–5 V voltage output
- 0–10 V voltage output
- Compatible with HVAC controllers
- Suitable for PLC and industrial controllers
- Integration with SCADA systems
- Suitable for BMS platforms
Designed for Seamless Industrial Integration
Select the output configuration that best matches your monitoring or automation system.
CD50 Product Resources
Access technical documentation and product resources for the POLWAX Atmos Series CD50 CO₂ Transmitter.
Reliable CO₂ Measurement for Professional Applications
The POLWAX Atmos Series CD50 combines high-resolution CO₂ measurement, flexible output configurations, rugged IP65 construction and industrial communication capabilities in one professional transmitter.
- Measurement ranges up to 0–10000 ppm
- 1 ppm resolution
- High-precision photodiode sensor
- Fast 2-second data update
- Stable measurement performance
- RS485 Modbus RTU communication
- 4–20 mA, 0–5 V and 0–10 V outputs
- IP65 protection
- Wall and pole mounting
- Industrial-grade ABS housing
CD50 CO₂ Transmitter FAQs
What does the CD50 measure?
The CD50 measures carbon dioxide concentration and provides CO₂ measurement for indoor and industrial monitoring applications.
What is the measurement range?
The CD50 is available with measurement ranges of 0–2000 ppm, 0–5000 ppm and 0–10000 ppm.
What is the resolution?
The CO₂ measurement resolution is 1 ppm.
Which output signals are available?
The CD50 supports RS485 Modbus RTU, 4–20 mA, 0–5 V and 0–10 V output signals.
Can the CD50 be connected to a PLC or SCADA system?
Yes. The RS485 Modbus RTU interface and analog outputs allow integration with PLCs, SCADA systems, BMS and industrial automation platforms.
Is the CD50 suitable for indoor air quality monitoring?
Yes. The CD50 is designed for indoor air quality, HVAC, commercial building and other continuous CO₂ monitoring applications.
Is the transmitter suitable for greenhouse applications?
Yes. The CD50 can be used for greenhouse climate control and agricultural CO₂ monitoring applications.
What mounting options are available?
The CD50 supports wall mounting and pole mounting configurations.
Smarter CO₂ Monitoring Starts with CD50
The POLWAX Atmos Series CD50 provides accurate, stable and real-time CO₂ measurement for indoor air quality, HVAC, greenhouse, building management and industrial monitoring applications.