04 Series

04 Series
Single Gas Detectors

Smallest Toxic Gas Monitor

The 04 Series toxic single gas monitor is the smallest toxic gas monitor designed to operate for many years with field-replaceable sensors and filters. The HCN, NO2, PH3, and SO2 versions can be operated continuously for at least 3,000 hours on (2) AAA-size alkaline batteries. The 04 models have 3 preset alarms that are user adjustable. Each version is also equipped with visual, audible, and vibration alarms as standard.

Each 04 Series monitor is impact, dust, and water-resistant with an IP-67 ingress protection rating. 04 Series instruments are safe for use in hazardous locations, classified as intrinsically safe ATEX/IECEx and by QPS to U.S. and Canadian standards for Class I, Division 1, Groups
A, B, C, and D atmospheres.

Available Gases

HCN • NO₂ • PH₃ • SO₂ • CO/O₂

Category: RKI Instruments, Single Gas

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Features

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Specifications

Sensor Specifications

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Documentation

Personal monitoring for HCN, NO2, PH3, and SO2
CO with H2 elimination
O2 / CO combo sensor
Operates 3,000 hours on alkaline
Impact, dust, and water resistance (IP-67)
Replaceable rubber boot
Datalog 5 to 300 hours with adjustable intervals
Audible / visual / vibration alarms
Automatic backlight
Low battery alarm
Intrinsically safe, ATEX and C / US approvals
3-year warranty

Size: 2.1 x 2.6 x 0.9 inches (54 x 67 x 24 mm)
Weight: 2.8 ounces (80g)
Battery service life: 3,000 hours on alkaline
Protection class: IP-67
Display: Digital LCD, gas name & concentration, auto backlighting during alarm, operation icon, battery icon
Response Time: T90 in 30 seconds
Alarm Types:
- Gas Alarm: 1st and 2nd (user adjustable), OVER alarm, STEL, and TWA
- Trouble Alarm: Sensor connection, low battery circuit failure, and calibration range errors
Air humidity: Humidity below 90% RH (non-condensing)
Operating Temperature: -4°F ~ 122°F (-20°C ~ 50°C)
Warranty: 3-Year Warranty

Sensor Type	Measuring Range (Resolution)	Alarm Setpoints
SC-04 HCN	0 - 30 ppm (0.1 ppm)	5 / 10 / 30 ppm
SC-04 NO2	0 - 20 ppm (0.05 ppm)	2.0 / 4.0 / 20.0 ppm
SC-04 PH3	0 - 20 ppm (0.01 ppm)	0.3 / 0.6 / 0.6 ppm
SC-04 SO2	0 - 100 ppm (0.05 ppm)	2 / 5 / 100 ppm
CO-04	0 - 2000 ppm (1 ppm)	25 / 50 / 1200 ppm
CX-04 (CO & O2)	CO: 0 - 2000 ppm (1 ppm) O2: 0 - 40% (0.1%)	CO: 2 / 5 / 100 ppm O2: 19.5 / 18.0 / 25 %