RKI Instruments OX-03, CO-03, HS-03 Specifications

P019-1711/2000

SINGLE GAS CLIP-ON PERSONAL MONITOR

Gas Detection For Life

03 Series

Features

• Operates 3,000 hours on alkaline
(GP-03 operates 35 or 30 hrs on alkaline/Ni-MH)

• Pocket size 2.1”(W) x 2.6”(H) x 0.9”(D)

• Light weight 2.8 ounces

• Impact, dust, and water resistant (IP-67)

• Replaceable rubber boot

• Data log 5 to 300 hours with adjustable intervals

• Audible / visual / vibration alarms

• Automatic backlight

• Peak Hold, STEL & TWA

• Low battery alarm

• Intrinsically safe, ATEX, CSA

• 3 Year warranty H2S & CO

• 2 Year warranty LEL & O2

Applications

• Hazardous material

• Mining

• Refineries / petrochemical

• Water / wastewater treatment

• Pharmaceuticals

• Utilities

• Chemical plants

• Fire services

4 Versions
Available

LEL

CO

H2S

O2

Individuals need personal protection in hazardous areas at all times without adding extra bulky equipment, and the
03 Series can provide that kind of protection at an affordable price. The GP-03, OX-03, CO-03, and HS-03 models are
personal single gas monitors designed for protection from exposure to combustible hydrocarbons, oxygen deficiency,
hydrogen sulfide, or carbon monoxide.

The O2, CO, and H2S versions can be operated continuously for at least 3,000 hours on (2) AAA size alkaline batteries.
The GP-03 operates for 35 hours on alkaline and 30 hours on rechargeable Ni-MH. The 03 models have 2 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-2009, GX-2012, and GasWatch 2. Sensors for LEL and O2 have a life expectancy of over 2 years.
Sensors for H2S and CO have a life expectancy of over 3 years.

Each 03 Series monitor is impact, dust, and water resistant with an IP-67 rating. 03 Series instruments are safe for
use in hazardous locations, classified as intrinsically safe ATEX/IECEx and by CSA 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.

RKI Instruments, Inc. • 33248 Central Ave. Union City, CA 94587 • Phone [phone] • [phone] • Fax [phone]

World Leader In Gas Detection & Sensor Technology

www.rkiinstruments.com

03 Series

Model Name CO-03 HS-03 OX-03 GP-03

Gas Detected

Detection Principle

Detection Range
(Increments)

Alarm Set Points

Alarm Types

Alarm Methods

Gas Sampling

Response Time

Accuracy

(which ever is greater)

Data Logging

Battery Options

Continuous Operation

Safety Rating

Enclosure

Dimensions & Weight

Display

Operating Temp. &
Humidity

Standard Accessories

Optional Accessories

Special Functions

Warranty

*3 year warranty covers instrument and original sensor. Replacement sensors have a 2 year warranty. Specifications subject to change without notice.

Carbon Monoxide (CO) Hydrogen Sulfide (H2S) Oxygen (O2) Combustible gas

Electrochemical Galvanic cell Catalytic combustion

0 – 500 ppm

(1 ppm)

1st 25 ppm
2nd 50 ppm
TWA 25 ppm
STEL 200 ppm
Over 500 ppm

Gas alarms: 1st and 2nd (user adjustable), OVER alarm, STEL and TWA
Trouble alarms: Sensor connection, low battery circuit failure, and calibration range error

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

T90 in 30 seconds

± 5% of reading or ± 5 ppm

(CO)

10 second intervals = 5 hours, 5 minute intervals = 150 hours, 10 minute intervals = 300 hours

Instrument records alarms, alarm trends, gas readings, calibration & bump test history, instrument information and settings.

Alkaline dry cell: more than 3,000 hours (at 25°C, no backlight)

ATEX/IECEx approved. CSA classified, “C/US”, as intrinsically safe, Class I, Division 1, Groups A, B, C, D

Digital LCD, gas name & concentration, auto backlighting during alarm, operation icon, battery icon

• Rubber protective boot • Alligator clip • Data logging software

• Alkaline batteries • Wrist strap

• Calibration cap • Charger unit • Wrist strap • Calibration station

• Calibration kit • Belt clip • Data logging download cable

• Manual backlight for LCD (automatically lit during alarm)

• Peak hold, STEL & TWA

3 Year warranty* 2 Year warranty

1st 10.0 ppm
2nd 30.0 ppm
TWA 1.0 ppm
STEL 5.0 ppm
Over 100.0 ppm

2.1” W x 2.64” H x 0.94” D, (54 x 67 x 24 mm); 2.8 ounces (80 g)

0 – 100 ppm

(0.5 ppm)

± 5% of reading or ± 2 ppm

(H2S)

Alkaline dry cell (2-AAA size)

Dust and water resistant with IP-67 rating

-4°F ~ 122°F (-20°C ~ 50°C);

Humidity below 90% RH (non-condensing)

0 – 40%vol.

(0.1% vol.)

Low 19.5% vol.
High 23.5% vol.
Over 40.0% vol.

Diffusion

T90 in 20 seconds (Alarms within 5

seconds when exposed to 12% O2)

± 0.5%

(O2)

0 – 100% LEL

(1% LEL increments)

1st 10% LEL
2nd 50% LEL
Over 100% LEL

T90 in 30 seconds

± 5% of reading or ± 2%

Alkaline dry cell (2-AAA size)

Ni-MH battery

Alkaline: 35 hours

Ni-MH: 30 hours

(LEL)

Toll Free: [phone] • Phone: [phone]

Fax: [phone] •

www.rkiinstruments.com

Authorized Distributor: