RKI Instruments 04 Series toxic single-gas monitor, designed to operate for many years with field-replaceable sensors and filters.
Models: HS-04, CO-04, OX-04.
Key benefits
- 2 user-adjustable preset alarms with visual, audible and vibration alarms as standard
- HCN, NO2, PH3 and SO2 versions run continuously for at least 3,000 hours on 2 AAA alkaline batteries
- Inexpensive, field-replaceable sensors interchangeable with RKI GX-3R, GX-3R Pro and GasWatch 3
- Sensor life expectancy over 3 years, backed by a 3-year warranty
- Impact, dust and water resistant (IP-67)
- Intrinsically safe: ATEX/IECEx, and QPS to U.S. and Canadian standards for Class I, Division 1, Groups A, B, C and D
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%) |
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| 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: b4.00 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 % |
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| 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 |
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| 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 |
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| Gas Sampling | Diffusion | ||||||
| Response Time | T90 in 30 seconds | ||||||
| Accuracy (which ever is greater) |
± 10% of reading or ± 5 % of full scale |
< 300 ppm ± 5 % of reading > 300 ppm ± 20 % of reading |
< 25% ± 0.5 % > 25% ± 3.0 % |
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| Data Logging | 10 second intervals = 10 hours, 5 minute intervals = 300 hours, 10 minute intervals = 600 hours | ||||||
| Instrument records alarms, alarm trends, gas readings, calibration & bump test history, instrument information and settings. | |||||||
| Battery Options | Alkaline dry cell (2-AAA size) | ||||||
| Continuous Operation | 3,000 hours (at 25°C, no backlight) | 6,200 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) |
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| Standard Accessories | • Rubber protective boot • Alligator clip • Data logging software • Alkaline batteries |
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| Optional Accessories | • Calibration cap • Wrist strap • Calibration kit • Belt clip • Data logging download cable |
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| Special Functions | • Manual backlight for LCD (automatically lit during alarm) • Peak hold, STEL & TWA |
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| Warranty | 3 Year warranty | ||||||
Product information supplied by the manufacturer (RKI Instruments).
Product codes
- HS-04 — SKU: 73-0063
- CO-04 — SKU: 73-0065
- OX-04 — SKU: 72-0018