RKI Instruments
RKI HS-04 Hydrogen Sulfide (H₂S) Single Gas Monitor
- SKU:
- 73-0063
- MPN:
- 73-0063
Description
The RKI HS-04 Hydrogen Sulfide (H₂S) Single Gas Monitor is a compact, rugged personal gas detector designed for continuous hydrogen sulfide monitoring in industrial and hazardous environments. Its small size and simple operation make it ideal for workers who need dependable personal protection from H₂S exposure.
The HS-04 provides continuous monitoring of hydrogen sulfide concentrations from 0–200 ppm H₂S. A clear, easy-to-read display provides real-time gas readings, while audible, visual, and vibration alarms alert the user when hydrogen sulfide concentrations reach configured alarm levels.
Built for demanding work environments, the HS-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 batteries and includes alkaline batteries and an alligator clip.
RKI Part Number: 73-0063
- Dedicated personal hydrogen sulfide (H₂S) monitor
- 0–200 ppm H₂S detection range
- 0.1 ppm reading increments
- Diffusion sampling
- Field-replaceable H₂S 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 batteries
- Long battery operating life
- Intrinsically safe hazardous-location approvals
Typical Applications
- Confined-space work
- Water and wastewater treatment
- Oil and gas facilities
- Refineries and petrochemical facilities
- Utilities
- Industrial maintenance
- Hazardous materials response
- Fire and emergency services
- Personal H₂S monitoring
| Model | RKI HS-04 |
| RKI Part Number | 73-0063 |
| Gas Detected | Hydrogen Sulfide (H₂S) |
| Detection Range | 0–200 ppm |
| Reading Increment | 0.1 ppm |
| Sampling Method | Diffusion |
| Sensor | Field-replaceable hydrogen sulfide 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 | HS-04 monitor, alkaline batteries and alligator clip |
Specifications are subject to manufacturer updates. Refer to the RKI HS-04 Operator's Manual for complete operating, calibration, safety and maintenance requirements.
Product Literature
Operator's Manual
Need help with the RKI HS-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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