Description
Reliable Sulfur Dioxide Detection for Hazardous Work Environments
The RKI SC-04 SO₂ Single Gas Monitor (Part No. 73-0081) is a compact personal gas detector designed for continuous monitoring of sulfur dioxide (SO₂) concentrations from 0 to 100 ppm. Built for use in industrial and hazardous environments, it features diffusion sampling, a field-replaceable electrochemical sensor, IP67 protection, datalogging capability, and audible, visual, and vibration alarms to help protect workers from hazardous SO₂ exposure.
Key Features
Benefits
Specifications
| Brand | RKI Instruments |
| Model | SC-04 |
| Part Number | 73-0081 |
| Product Type | Single Gas Monitor |
| Gas Detected | Sulfur Dioxide (SO₂) |
| Detection Principle | Electrochemical |
| Detection Range | 0 to 100 ppm |
| Resolution | 0.05 ppm |
| Sampling Method | Diffusion |
| Response Time | T90 within 30 seconds |
| Power Source | 2 × AAA alkaline batteries |
| Battery Life | 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 (approximately 80 g) |
| Ingress Protection | IP67 |
| Display | Digital LCD with gas concentration display |
| Operating Temperature | -20°C to 50°C |
| Humidity | 0 to 90% RH, non-condensing |
| Compatibility | GX-3R, GX-3R Pro and GasWatch 3 replacement sensors |
| Individual Pack | Monitor with alkaline batteries and alligator clip |
| Colour | Black housing with green front panel |
How to Use
- Install the supplied AAA alkaline batteries.
- Attach the monitor using the rotating alligator clip.
- Power on the instrument and allow the start-up sequence to complete.
- Verify proper operation before entering the work area.
- Wear the monitor within the breathing zone during exposure monitoring.
- Respond immediately to any alarm condition according to site safety procedures.
- Perform bump testing and calibration in accordance with manufacturer recommendations.
⚠️ The manufacturer advises bump testing the instrument before each day of use with a known concentration of the target gas to verify proper operation.
⭐⭐⭐⭐⭐ “Compact, dependable, and easy to carry during refinery inspections.” — David S.
⭐⭐⭐⭐⭐ “Clear alarms and excellent visibility even in noisy plant environments.” — Pieter M.
⭐⭐⭐⭐⭐ “The field-replaceable sensor helps reduce downtime and maintenance costs.” — Karen T.
Frequently Asked Questions
What gas does this monitor detect? It is dedicated to sulfur dioxide (SO₂) detection.
What is the measuring range? The instrument measures SO₂ concentrations from 0 to 100 ppm.
How does the monitor sample gas? It uses diffusion sampling, allowing ambient air to reach the sensor naturally.
Does it provide multiple alarm methods? Yes, audible, visual, and vibration alarms are provided.
Can the sensor be replaced? Yes, the SO₂ sensor is field replaceable.
Is the monitor suitable for hazardous locations? Yes, it carries intrinsically safe approvals for use in classified hazardous areas.
Can alarm and monitoring data be recorded? Yes, the SC-04 includes datalogging functionality.
Is the monitor resistant to water and dust? Yes, it is rated IP67 for dust and water ingress protection.
Industries & Applications
Compliance & Certifications
Choose the RKI SC-04 SO₂ Single Gas Monitor for dependable personal gas detection, proven hazardous-area approvals, rugged IP67 construction, and reliable sulfur dioxide monitoring in demanding industrial environments.
