Description
The RKI CO-04 Carbon Monoxide (CO) Single Gas Monitor is a compact, rugged personal gas detector designed for continuous carbon monoxide monitoring in industrial and hazardous environments. Its small size and simple operation make it ideal for workers who need dependable personal protection from CO exposure.
The CO-04 provides continuous monitoring of carbon monoxide concentrations from 0–2,000 ppm CO. A clear, easy-to-read display provides real-time gas readings, while audible, visual, and vibration alarms alert the user when carbon monoxide concentrations reach configured alarm levels.
Built for demanding work environments, the CO-04 features an IP67 impact-, dust-, and water-resistant enclosure, automatic alarm backlighting, datalogging capability, and a rotating alligator clip for convenient personal wear.
The instrument is powered by two AAA alkaline batteries and includes alkaline batteries and an alligator clip.
RKI Part Number: 73-0065
- Dedicated personal carbon monoxide (CO) monitor
- 0–2,000 ppm CO detection range
- 1 ppm reading increments
- Diffusion sampling
- Field-replaceable CO sensor
- Audible, visual, and vibration alarms
- User-adjustable alarm settings
- Automatic LCD backlight during alarm conditions
- Peak-hold function
- Built-in datalogging capability
- IP67 impact-, dust-, and water-resistant enclosure
- Replaceable protective rubber boot
- 360° rotating alligator clip
- Powered by two AAA alkaline batteries
- Long battery operating life
- Intrinsically safe hazardous-location approvals
Typical Applications
- Confined-space work
- Industrial facilities
- Water and wastewater treatment
- Utilities
- Refineries and petrochemical facilities
- Industrial maintenance
- Hazardous materials response
- Fire and emergency services
- Personal carbon monoxide monitoring
| Model | RKI CO-04 |
| RKI Part Number | 73-0065 |
| Gas Detected | Carbon Monoxide (CO) |
| Detection Range | 0–2,000 ppm |
| Reading Increment | 1 ppm |
| Sampling Method | Diffusion |
| Sensor | Field-replaceable carbon monoxide sensor |
| Response Time | T90 within 30 seconds |
| Power | 2 AAA alkaline batteries |
| Continuous Operation | Up to 9,000 hours, depending on operating conditions |
| Operating Temperature | -4°F to 122°F (-20°C to 50°C) |
| Humidity | 0–90% RH, non-condensing |
| Dimensions | Approx. 2.1 in W × 2.64 in H × 0.94 in D |
| Ingress Protection | IP67 |
| Alarms | Audible, visual, vibration and LCD indication |
| Safety Approvals | ATEX / IECEx; QPS C/US intrinsically safe, Class I, Division 1, Groups A, B, C & D |
| Warranty | 3 years |
| Included | CO-04 monitor, alkaline batteries and alligator clip |
Specifications are subject to manufacturer updates. Refer to the RKI CO-04 Operator's Manual for complete operating, calibration, safety and maintenance requirements.
Product Literature
Operator's Manual
Need help with the RKI CO-04, calibration gas, or selecting the correct gas detector? Call CPS Calibrations at 865-900-8844 or email info@cpscalibrations.com.
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