Description
RKI SC-04 NO₂ Single Gas Monitor 0-20 ppm Black
The RKI SC-04 NO₂ Single Gas Monitor (Part No. 73-0073) is a compact personal gas detector designed for continuous monitoring of nitrogen dioxide (NO₂) concentrations from 0-20 ppm. Built for industrial and hazardous environments, this rugged monitor features field-replaceable sensors and filters, IP67 ingress protection, intrinsically safe approvals, and multiple alarm notification methods to help protect personnel working around toxic gas hazards.
Key Features
- ⚫ Dedicated nitrogen dioxide (NO₂) monitoring from 0-20 ppm
- 🔋 Powered by two AAA alkaline batteries
- 🔧 Field-replaceable NO₂ sensor and filters
- 📢 Audible alarm notification
- 💡 Visual alarm indicators with automatic backlight
- 📳 Built-in vibration alarms
- 🛡️ IP67 impact, dust and water resistant construction
- 🔄 360° rotating alligator clip for secure attachment
- ⚙️ Three user-adjustable preset alarm levels
- 📊 Built-in datalogging capability
- ✅ Intrinsically safe approvals for hazardous locations
- 🧰 Replaceable protective rubber boot
Benefits
- 👷 Provides dedicated personal protection against NO₂ exposure
- 🔄 Reduces ownership costs through field-serviceable components
- 📈 Delivers continuous real-time gas concentration monitoring
- 🌧️ Suitable for demanding indoor and outdoor environments
- 🔔 Multiple alarm methods improve hazard awareness
- 📦 Lightweight pocket-sized design enhances wearer comfort
- 🔧 Sensor interchangeability with selected RKI instruments simplifies maintenance
- ⏳ Sensor life expectancy exceeds three years under normal conditions
Specifications
| Brand | RKI Instruments |
| Model | SC-04 |
| Part Number | 73-0073 |
| Product Type | Single Gas Monitor |
| Gas Detected | Nitrogen Dioxide (NO₂) |
| Detection Range | 0-20 ppm |
| Sampling Method | Diffusion |
| Sensor Type | Field-replaceable NO₂ sensor |
| Power Supply | 2 x AAA alkaline batteries |
| Operating Time | Up to 9,000 hours (depending on model) |
| Dimensions | 2.1 in (W) × 2.6 in (H) × 0.9 in (D) |
| Weight | 2.8 oz |
| Ingress Protection | IP67 |
| Alarms | Audible, visual and vibration |
| Backlight | Automatic alarm-activated backlight |
| Data Logging | Built-in datalogging capability |
| Clip | 360° rotating alligator clip |
| Colour | Black |
| Operating Temperature | -20°C to 50°C (-4°F to 122°F) |
| Humidity | 0-90% RH, non-condensing |
| Safety Approvals | ATEX, IECEx, QPS C/US Class I Division 1 Groups A, B, C & D |
| Warranty | 3 Years |
| Individual Pack | Monitor, alkaline batteries and alligator clip |
How to Use
- Install the supplied AAA alkaline batteries.
- Power on the monitor and allow startup checks to complete.
- Attach the monitor using the rotating alligator clip within the breathing zone.
- Monitor the real-time NO₂ reading on the display during use.
- Respond immediately if audible, visual or vibration alarms activate.
- Perform bump testing and maintenance according to manufacturer requirements.
- Replace sensors and filters when required using approved replacement components.
⚠️ The manufacturer states that the instrument should be bump tested before each day of use with a known concentration of the target gas to help ensure proper operation and accurate readings.
⭐⭐⭐⭐⭐ “Compact, easy to wear and the alarms are impossible to miss. Ideal for our maintenance team.” — Daniel S.
⭐⭐⭐⭐⭐ “The rotating clip and rugged construction work well in demanding industrial environments.” — Michael S.
⭐⭐⭐⭐⭐ “Simple operation with reliable NO₂ monitoring and excellent battery life.” — Andre S.
Frequently Asked Questions
What gas does this model detect? This version is dedicated to nitrogen dioxide (NO₂) detection.
What is the monitoring range? The detector measures NO₂ concentrations from 0 to 20 ppm.
How are samples collected? The instrument uses diffusion sampling, allowing ambient air to naturally reach the sensor.
Is the sensor replaceable? Yes. The NO₂ sensor is field replaceable.
Can the filters be replaced? Yes. The SC-04 is designed with field-replaceable filters.
Does it provide multiple alarm types? Yes. Audible, visual and vibration alarms are standard.
Is it suitable for harsh environments? Yes. The monitor is impact, dust and water resistant with an IP67 rating.
Can it be used in hazardous areas? Yes. The unit carries intrinsic safety approvals including ATEX, IECEx and QPS certifications for specified hazardous locations.
Does it record data? Yes. The monitor includes built-in datalogging capability.
Industries & Applications
- 🏭 Industrial manufacturing
- ⚗️ Chemical processing facilities
- ⚡ Power generation plants
- 🛢️ Refineries and petrochemical operations
- 🚒 Fire and emergency services
- ☣️ Hazardous materials response
- 🔧 Industrial maintenance operations
- 🚪 Confined space monitoring
- 💧 Water and wastewater treatment facilities
- ⛏️ Mining environments
- 🏗️ Utilities and infrastructure operations
Compliance & Certifications
- ✅ ATEX Intrinsically Safe Approval
- ✅ IECEx Intrinsically Safe Approval
- ✅ QPS C/US Certification
- ✅ Class I, Division 1, Groups A, B, C & D Hazardous Location Approval
- ✅ IP67 Ingress Protection Rating
The RKI SC-04 NO₂ Single Gas Monitor combines rugged construction, long operating life, field-serviceable components, and hazardous-area approvals in a lightweight personal detector. Its dedicated nitrogen dioxide monitoring capability, multiple alarm methods, and proven industrial design make it an excellent choice for professionals who require reliable personal gas detection in demanding environments.
