RKI Instruments Single Gas Toxic Personal Monitor - 04 Series
Gas Detection For Life
Brand: RKI INSTRUMENTS
Series: 04 Series
Product Overview
The RKI Instruments 04 Series toxic single gas monitor is engineered for reliable, long-term operation in demanding environments. Designed for personal safety, these monitors are available for detecting specific toxic gases including HCN, NO2, PH3, and SO2, as well as CO with H2 elimination, and O2/CO combo sensors.
[Image of RKI 04 Series Gas Monitor - multiple units shown displaying different gas readings]
Each monitor features field-replaceable sensors and filters, ensuring extended service life. The HCN, NO2, PH3, and SO2 versions operate continuously for at least 3,000 hours on two AAA alkaline batteries. The 04 models offer three user-adjustable preset alarms and are equipped with standard visual, audible, and vibration alarms.
Replacement sensors are cost-effective, easily field-replaceable, and compatible with other RKI instruments like the GX-3R, GX-3R Pro, and GasWatch 3. Sensors are backed by a 3-year warranty and have a life expectancy of over 3 years.
The 04 Series monitors are impact, dust, and water resistant with an IP-67 ingress protection rating. They are certified safe for use in hazardous locations, classified as intrinsically safe by ATEX/IECEx and QPS for U.S. and Canadian standards (Class I, Division 1, Groups A, B, C, D atmospheres).
Features
- ✔️ Personal monitoring for HCN, NO2, PH3, or SO2
- ✔️ CO with H2 elimination
- ✔️ O2/CO combo sensor
- ✔️ Operates 3,000 hours on alkaline batteries
- ✔️ Pocket size: 2.1" (W) x 2.6" (H) x 0.9" (D)
- ✔️ Lightweight: 2.8 ounces
- ✔️ Impact, dust, and water resistant (IP-67)
- ✔️ Replaceable rubber boot
- ✔️ Data logging: 10 to 600 hours with adjustable intervals
- ✔️ Audible / visual / vibration alarms
- ✔️ Automatic backlight
- ✔️ Low battery alarm
- ✔️ Intrinsically safe, ATEX and C / US approvals
- ✔️ 3 Year warranty
Applications
- Hazardous material handling
- Mining operations
- Refineries / petrochemical facilities
- Water / wastewater treatment plants
- Pharmaceutical manufacturing
- Utility services
- Chemical plants
- Fire services
- Steel mills
[Graphic indicating toxic gases: CO (-H2) and CO O2]
Specifications
| Model Name | SC-04 HCN | SC-04 NO2 | SC-04 PH3 | SC-04 SO2 | CO-04 (-H2) | CX-04 | |
|---|---|---|---|---|---|---|---|
| Gas Detected | Hydrogen Cyanide | Nitrogen Dioxide | Phosphine | Sulfur Dioxide | Carbon Monoxide | CO | O2 |
| Detection Principle | Electrochemical | ||||||
| Part# | 73-0071 | 73-0073 | 73-0079 | 73-0083 | 73-0067 | 73-0069 | |
| Detection Range (Increments) | 0 ~ 30.0 ppm (0.1 ppm) | 0 ~ 20.00 ppm (0.05 ppm) | 0 ~ 20.00 ppm (0.01 ppm) | 0 ~ 100.0 ppm (0.05 ppm) | 0 ~ 2000 ppm (1 ppm) | 0 ~ 40% (0.1%) | |
| Alarm Set Points | 1st: 5.0 ppm 2nd: 10.0 ppm 3rd: 30.0 ppm TWA: 4.7 ppm STEL: 10 ppm | 1st: 2.00 ppm 2nd: 4.00 ppm 3rd: 20.00 ppm TWA: 0.50 ppm STEL: 1.00 ppm | 1st: 0.30 ppm 2nd: 0.60 ppm 3rd: 0.60 ppm TWA: 0.30 ppm STEL: 1.00 ppm | 1st: 2.00 ppm 2nd: 5.00 ppm 3rd: 100.00 ppm TWA: 2.00 ppm STEL: 5.00 ppm | 1st: 25 ppm 2nd: 50 ppm 3rd: 1200 ppm TWA: 25 ppm STEL: 200 ppm | L: 19.5 % LL: 18.0% H: 25.0 % | |
| Alarm Types | Gas alarms: 1st, 2nd and 3rd (user adjustable), OVER alarm, STEL and TWA Trouble alarms: Sensor connection, low battery, circuit failure, and calibration range error | ||||||
| Alarm Methods | Gas alarm: Flashing LED's, intermittent buzzer, flashing gas value, and vibration Trouble alarm: Flashing LED's, intermittent buzzer, and display of error message STEL & TWA alarms: Flashing LED's, intermittent buzzer, flashing gas value, and vibration | ||||||
| Gas Sampling | Diffusion | ||||||
| Response Time | T90 in 30 seconds | ||||||
| Accuracy (which ever is greater) | ± 10% of reading or ± 5% of full scale | ± 10% of reading or ± 5% of full scale | ± 10% of reading or ± 5% of full scale | ± 10% of reading or ± 5% of full scale | < 300 ppm ± 5% of reading > 300 ppm ± 20% of reading | < 25% ± 0.5 % > 25% ± 3.0 % | |
| Data Logging | Instrument records alarms, alarm trends, gas readings, calibration & bump test history, instrument information and settings. 10 second intervals = 10 hours, 5 minute intervals = 300 hours, 10 minute intervals = 600 hours | ||||||
| Battery Options | Alkaline dry cell (2-AAA size) | ||||||
| Continuous Operation | 3,000 hours (at 25°C, no backlight) | 6,200 hours | 6,200 hours | 6,200 hours | 4,600 hours | 4,600 hours | |
| Safety Rating | ATEX/IECEx approved. QPS classified, "C / US", as intrinsically safe, Class I, Division 1, Groups A, B, C, D | ||||||
| Enclosure | Dust and water resistant with IP-67 rating | ||||||
| Dimensions & Weight | 2.1" W x 2.64" H x 0.94" D, (54 x 67 x 24 mm); 2.8 ounces (80 g) | ||||||
| Display | Digital LCD, gas name & concentration, auto backlighting during alarm, operation icon, battery icon | ||||||
| Operating Temp. & Humidity | -4°F ~ 122°F (-20°C ~ 50°C); Humidity below 90% RH (non-condensing) | ||||||
| Standard Accessories |
| ||||||
| Optional Accessories |
| ||||||
| Special Functions |
| ||||||
| Warranty | 3 Year warranty | ||||||
