Ensuring a safe and healthy work environment is crucial, especially when dealing with volatile organic compounds (VOCs) like paint thinners, cleaning solvents, and gasoline vapors. The C-21 VOC Monitor is designed to provide real-time monitoring and early detection of harmful gases and vapors, offering peace of mind and regulatory compliance in a variety of industries.
Why Choose the C-21 VOC Monitor?
The C-21 stands out as a solid-state gas monitor capable of detecting a wide range of VOCs at low ppm levels, far below OSHA’s Threshold Limit Values (TLVs). With features tailored to simplicity, reliability, and portability, this device is perfect for both technical and non-technical personnel.
Key Benefits of the C-21 VOC Monitor
- Continuous Monitoring: Keeps tabs on your work environment, ensuring safety at all times.
- Proactive Detection: Identifies leaks and poor air quality before they escalate into health hazards.
- Regulatory Compliance: Alarms are triggered at levels well below OSHA TLVs for most VOCs.
- Ease of Use: No installation required; intuitive operation for all users.
- Low Maintenance: Durable design with virtually no upkeep needed.
Top Features of the C-21
- Portable Use: Integrated rechargeable battery for mobility.
- Audible Alarm: Built-in alarm for immediate alerts.
- User-Adjustable Relays: Internal control relays allow customization of alarm settings.
- Clear Hazard Display: Bright green-yellow-red indicators show real-time hazard levels.
- Sensitive Detection: Detects VOCs down to low ppm concentrations.
- Rugged Build: Durable construction with safety in mind.
What’s Included with the C-21
- C-21 VOC Monitor
- AC Adapter for continuous power
- Magnetic strip for easy mounting on metal surfaces
- Comprehensive user manual
- Calibration certificate for accurate measurements
Detection Capabilities of the C-21
The C-21 VOC Monitor is fine-tuned to detect VOCs at different thresholds. Below is a summary of its detection capabilities:
| VOC Gas | Lower Detection Limit | Upper Detection Range | Alarm Trigger | TLV |
|---|---|---|---|---|
| Acetone | 4-5 ppm | 30 ppm | 20-25 ppm | 750 ppm |
| Benzene | 5-10 ppm | 60 ppm | 25-50 ppm | 10 ppm |
| Formaldehyde | 1-5 ppm | 30 ppm | 15-25 ppm | 0.1 ppm |
| Toluene | 3-5 ppm | 30 ppm | 15-25 ppm | 50 ppm |
Advanced Capabilities
Relay Control
The C-21 can serve as a controller for external systems like alarms or ventilation fans. Its integrated relay can handle up to 30 Volts at 130 mA, with customizable settings for alarm triggers via dip switches. Users can also toggle the audible alarm as needed.
Data Logging
For those requiring detailed gas measurement records, the C-21 is compatible with external data loggers like the DL-4C or DL-4V. These devices connect via the 0-2 VDC output to log and save measurements for analysis.
Applications
The C-21 VOC Monitor is ideal for environments where VOC detection is critical, including:
- Industrial Settings: Detect solvent leaks and poor air quality.
- Construction: Monitor VOCs from paints and thinners.
- Laboratories: Ensure compliance with safety standards.
Safeguard Your Environment Today
The C-21 VOC Monitor offers an unparalleled combination of sensitivity, simplicity, and reliability. Whether you’re ensuring regulatory compliance or safeguarding employee health, this device is an essential tool for VOC detection.
You can find this product here: https://www.gas-sensing.com/c21-gas-sensor.html


