Single Gas Monitors RKI Instruments CO-04, HS-04, OX-04, SC-04

04 Series – Single Gas Monitors

OX-04
HS-04
CX-04
SC-04 HCN

CO-04, HS-04, OX-04, SC-04

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*
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Overview

CO-04OX-04HS-04CX-04SC-04 HCN

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. For additional information please visit our web site at
www.rkiinstruments.com.

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

Application

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

Specifications

Gases & Detectable Ranges
Gas Part #
(Model)
Detection Range
(Increments)
Alarm

Set Points

Continuous Operation
Hydrogen Sulfide

(H2S)

73-0063
HS-04
0 – 100.0 ppm
(0.1 ppm)
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) 73-0065
CO-04
0 – 2000 ppm

(1 ppm)

A1: 25 ppm 9,000 hours
A2: 50 ppm
A3: 1200 ppm
CO (-H2) 73-0067
CO-04C
6,200 hours
TWA 25 ppm
STEL 200 ppm
Oxygen (O2) 72-0018
OX-04
0 – 40% Vol.
(0.1%)
A1: 19.5 Vol. 3,000 hours
A2: 18.0 Vol.
A3: 23.5 Vol.
Dual Sensor
CO / O2
73-0069
CX-04
CO

0 – 2000 ppm

(1 ppm)

A1: 25 ppm 4,600 hours
A2: 50 ppm
A3: 1200 ppm
TWA 25 ppm
STEL 200 ppm
O2

0 – 40% Vol.
(0.1%)

A1: 19.5 Vol.
A2: 18.0 Vol.
A3: 23.5 Vol.
Ammonia

(NH3)

73-0077
SC-04
0 – 300.0 ppm
(0.5 ppm)
A1: 25.0 ppm 3,000 hours
A2: 35.0 ppm
A3: 300.0 ppm
TWA 25.0 ppm
STEL 35.0 ppm
Chlorine
(Cl2)
73-0075
SC-04
0 – 10.00 ppm
(0.05 ppm)
A1: 1.0 0 ppm
A2: 2.0 0 ppm
A3: 10.00 ppm
TWA 0.50 ppm
STEL 1.00 ppm
Hydrogen Cyanide

(HCN)

73-0071
SC-04
0 – 30.0 ppm
(0.1 ppm)
A1: 5.0 ppm
A2: 10. 0 ppm
A3: 30.0 ppm
TWA 4.7 ppm
STEL 10.0 ppm
Nitrogen Dioxide

(NO2)

73-0073
SC-04
0 – 20.00 ppm
(0.05 ppm)
A1: 2.0 ppm
A2: 4. 0 ppm
A3: 20.00 ppm
TWA 0.50 ppm
STEL 1.00 ppm
Phosphine (PH3) 73-0079
SC-04
0 – 20.00 ppm
(0.01 ppm)
A1: 0.30 ppm
A2: 0. 60 ppm
A3: 1.00 ppm
TWA 0.30 ppm
STEL 1.00 ppm
Sulfur Dioxide (SO2) 73-0081
SC-04
0 – 100.00 ppm
(0.05 ppm)
A1: 2.0 0 ppm
A2: 5.0 0 ppm
A3: 100.0 ppm
TWA 2.00 ppm
STEL 5.00 ppm
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 • SDM-04 Calibration Station (Q4 2022)

• 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)
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