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Single Gas Monitors

RKI - CO-04, HS-04, OX-04, CX-04

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Description
Specifications

04 Series – Single Gas Monitors

The 04 Series single gas monitor is designed to operate for many years with field replaceable sensors and filters. The 04 Series can be operated continuously for up to 9,000 hours on (2) AAA size alkaline batteries (depending on model). The 04 Series has 3 preset alarms that are user adjustable. Each version is also equipped with visual, audible, and vibration alarms as standard.

The replacement sensors are inexpensive, easily field replaceable, and are interchangeable with other popular RKI instruments like the GX-3R, GX-3R Pro, and GasWatch 3. Sensors have a life expectancy of over 3 years and are backed by a 3 year warranty.*

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.

* 3 year warranty on material and workmanship including sensors (1 year warranty for Ammonia and Chlorine sensors)

Features

Continuously operate for over one year (H2S & CO)
Toxic gases include: NH3, Cl2, HCN, NO2, PH3 & SO2
CO with H2 elimination
CO & O2 Dual Sensor
Field serviceable
Pocket size 2.1”(W) x 2.6”(H) x 0.9”(D),2.8 ounces
Impact, dust, and water resistant (IP-67)
Replaceable rubber boot
Alligator clip with 360° rotation
Audible / visual / vibration alarms
Automatic backlight
Intrinsically safe, ATEX and C / US approvals
3 Year warranty*

Application

Hazardous material
Mining
Refineries / petrochemical
Water / wastewater treatment
Pharmaceuticals
Utilities
Chemical plants
Fire services

Common Specifications

Sample Method	Diffusion
Response Time	T90 in 30 seconds
Alarm Types	Gas alarm	Trouble alarm
	1st, 2nd, and 3rd (user adjustable),OVER alarm, STEL, and TWA	Sensor connection, low battery, circuit failure,and calibration range error
Alarm Methods	Gas Alarm	Trouble Alarm	STEL / TWA
	Flashing LED’s, intermittent buzzer, flashing gas value, and vibration	Flashing LED’s, intermittent buzzer, and display of error message	Flashing LED’s, intermittent buzzer, flashing gas value, and vibration
Datalogging	10 sec. intervals = 10 hrs. 5 min. intervals = 300hrs, 10 min. intervals = 600 hours
	Instrument records alarms, alarm trends, gas readings, calibration & bump test history, instrument settings
Battery Options	Alkaline dry cell (2-AAA size)
Display	Digital LCD, gas name & concentration, auto backlighting during alarm, operation icon, battery icon
Operating Temp. & Humidity	-4°F to 122°F (-20°C ~ +50℃),0- 90% RH non condensing
Dimensions	2.1” W x 2.64” H x 0.94” D (54 x 67 x 24 mm) 2.8 ounce (80g)
Enclosure	Dust and water resistant with IP-67 rating
Safety Rating	ATEX/IECEx approved. QPS classified, “C / US”, as intrinsically safe, Class I, Division 1, Groups A, B, C, D
Standard Accessories	• Rubber boot • Datalogging software • Alligator clip • Alkaline batteries
Optional Accessories	Calibration cap Wrist strap Calibration kit Belt clip Datalogging download cable
Special Functions	Manual backlight for LCD (automatically lit during alarm),Peak hold, STEL & TWA
Warranty	3 year warranty (1 year for Ammonia and Chlorine)

Gases & Detectable Ranges

Gas	Models	Detection Range (Increments)	Accuracy Statement	Alarm Set Points	Continuous Operation
Hydrogen Sulfide (H2S)	HS-04	0 – 200.0 ppm (0.1 ppm)	± 5% of reading or ± 2 ppm H2S	A1: 5 ppm	9,000 hours
				A2: 30.0 ppm
				A3: 100.0 ppm
				TWA 1.0 ppm
				STEL 5.0 ppm
Carbon Monoxide (CO)	CO-04	0 – 2000 ppm (1 ppm)	± 5% of reading or ± 5 ppm CO	A1: 25 ppm	9,000 hours
				A2: 50 ppm
				A3: 1200 ppm
CO (-H2)	CO-04C		± 5% of reading or ± 2 ppm CO	A3: 1200 ppm	6,200 hours
				TWA 25 ppm
				STEL 200 ppm
Oxygen (O2)	OX-04	0 – 40% Vol. (0.1%)	± 0.5% O2	A1: 19.5 Vol.	3,000 hours
				A2: 18.0 Vol.
				A3: 23.5 Vol.
CO / O2 Dual Sensor	CX-04	CO 0 - 2000 ppm (1 ppm)	± 5% of reading or ± 2 ppm H2S	A1: 25 ppm	4,600 hours
				A2: 50 ppm
				A3: 1200 ppm
				TWA 25 ppm
				STEL 200 ppm
		O2 0 - 40% Vol. (0.1%)	± 0.5% O2	A1: 19.5 Vol.
				A2: 18.0 Vol.
				A3: 23.5 Vol.