Description
RKI SC-04 HCN Single Gas Monitor 0-30 ppm Black
The RKI SC-04 HCN Single Gas Monitor (Part No. 73-0071) is a compact personal gas detector designed for continuous monitoring of hydrogen cyanide (HCN) in hazardous and industrial environments. This dedicated single-gas monitor measures HCN from 0 to 30 ppm and features audible, visual, and vibration alarms, an IP67-rated enclosure, field-replaceable sensor technology, and intrinsically safe approvals for use in hazardous locations.
Key Features
- 🟢 Dedicated hydrogen cyanide (HCN) monitoring
- 🟢 Detection range: 0-30 ppm HCN
- 🟢 Field-replaceable HCN sensor
- 🟢 Diffusion sampling operation
- 🟢 User-adjustable alarm settings with three preset alarm levels
- 🟢 Audible, visual and vibration alarms
- 🟢 Automatic backlight activation during alarm events
- 🟢 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
- 🟢 Intrinsically safe hazardous-location approvals
- 🟢 Compact pocket-sized design
- 🟢 Field serviceable construction
Benefits
- ✅ Provides continuous personal protection against hydrogen cyanide exposure
- ✅ Easy sensor replacement reduces service downtime
- ✅ Multiple alarm methods help ensure alerts are noticed in noisy environments
- ✅ Rugged enclosure withstands demanding industrial conditions
- ✅ Lightweight pocket-sized design improves wearer comfort
- ✅ Long battery runtime supports extended field use
- ✅ Datalogging assists with safety monitoring and record keeping
- ✅ Certified for use in hazardous locations
Specifications
| Brand | RKI Instruments |
| Model | SC-04 |
| Part Number | 73-0071 |
| Product Type | Single Gas Monitor |
| Gas Detected | Hydrogen Cyanide (HCN) |
| Detection Range | 0-30 ppm |
| Colour | Black |
| Sensor Type | Field-replaceable electrochemical HCN sensor |
| Sampling Method | Diffusion |
| Response Time | T90 within 30 seconds |
| Power Supply | 2 x AAA alkaline batteries |
| Runtime | 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 |
| Operating Temperature | -20°C to 50°C (-4°F to 122°F) |
| Humidity | 0-90% RH, non-condensing |
| Alarms | Audible, visual, vibration and LCD indication |
| Data Logging | Built-in datalogging capability |
| Compatibility | Sensors interchangeable with GX-3R, GX-3R Pro and GasWatch 3 instruments |
| Approvals | ATEX, IECEx, QPS C/US Class I Division 1 Groups A, B, C & D |
| Warranty | 3 Years |
| Individual Pack | SC-04 HCN monitor, alkaline batteries and alligator clip |
How to Use
- Install the supplied AAA alkaline batteries.
- Switch on the monitor and allow the startup sequence to complete.
- Verify proper operation according to site procedures before use.
- Attach the monitor using the supplied 360° rotating alligator clip.
- Wear the instrument within the breathing zone during work activities.
- Monitor the HCN reading continuously during operation.
- Respond immediately to audible, visual or vibration alarms according to workplace safety procedures.
- Perform maintenance and sensor replacement as recommended by the manufacturer.
⚠️ 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, easy to wear and gives clear HCN readings throughout the shift.” — Michael S.
⭐️⭐️⭐️⭐️⭐️ “Reliable alarm system and rugged enough for demanding environments.” — Darren S.
⭐️⭐️⭐️⭐️⭐️ “The replaceable sensor design helps reduce maintenance costs.” — Jason S.
FAQs
What gas does this monitor detect? This model is dedicated to hydrogen cyanide (HCN) monitoring only.
What is the detection range? The SC-04 HCN measures from 0 to 30 ppm.
How are samples collected? The monitor uses diffusion sampling, allowing ambient air to reach the sensor naturally.
Does it provide multiple alarm types? Yes. Audible, visual and vibration alarms are included as standard.
Can the sensor be replaced? Yes. The HCN sensor is field replaceable.
Is the monitor suitable for hazardous locations? Yes. It carries intrinsically safe approvals including ATEX, IECEx and QPS C/US classifications.
Can alarm settings be adjusted? Yes. The monitor includes user-adjustable alarm settings based on preset alarm levels.
Does it record data? Yes. Built-in datalogging capability is included.
What batteries does it use? Two AAA alkaline batteries.
Is it water and dust resistant? Yes. The enclosure is rated IP67.
Industries & Applications
- 🏭 Chemical processing facilities
- 🏭 Industrial manufacturing plants
- 🚒 Fire and emergency services
- ⚠️ Hazardous materials response
- 🔧 Industrial maintenance operations
- 🛢️ Refineries and petrochemical facilities
- 🚧 Confined-space work
- 👷 Personal toxic gas monitoring programs
Compliance & Certifications
- ✔️ ATEX Approved
- ✔️ IECEx Approved
- ✔️ QPS C/US Intrinsically Safe Certification
- ✔️ Class I, Division 1, Groups A, B, C and D
- ✔️ IP67 Ingress Protection Rating
The RKI SC-04 HCN Single Gas Monitor combines rugged construction, reliable hydrogen cyanide detection, multiple alarm methods, datalogging functionality and field-serviceable design in a compact personal monitor trusted for demanding industrial safety applications.
