This product appears in the ERE Air Catalogue 2025
Rolls-Royce
Bureau Veritas
Renouveau La Fontaine
Englobe
National Defence
Government of QuébecOverview
The RKI 03 Series are compact personal single gas monitors: the GP-03 for combustible gas (0-100 % LEL), the CO-03 for carbon monoxide (0-500 ppm) and the HS-03 for hydrogen sulfide (0-100 ppm). Each weighs 2.8 oz (80 g), runs on two AAA batteries and is IP67 rated.
- GP-03 LEL: 35 hours on alkaline or 30 hours on Ni-MH batteries
- CO-03 and HS-03: more than 3,000 hours on alkaline batteries
- Flashing LEDs, buzzer and vibration with user adjustable 1st and 2nd alarms plus STEL and TWA
- Logs alarms, readings, calibration and bump test history
- Field replaceable sensors; the GP-03 LEL sensor is shared with the RKI GX-2009 and GX-2012
- IP67 dust and water resistant
- Intrinsically safe: CSA C/US Class I Div 1 Groups A B C D, ATEX and IECEx
- Calibrates on the RKI SDM-03 single point calibration station
Every package includes the alligator clip. Request a quote for pricing and availability.
Specifications
- GP-03 Combustible Gas
- Catalytic combustion / 0-100 % LEL (1 % LEL) / alarms 10 and 50 % LEL / ± 5 % of reading or ± 2 % LEL
- CO-03 Carbon Monoxide
- Electrochemical / 0-500 ppm (1 ppm) / alarms 25 and 50 ppm / TWA 25 / STEL 200 ppm
- HS-03 Hydrogen Sulfide
- Electrochemical / 0-100 ppm (0.5 ppm) / alarms 10 and 30 ppm / TWA 1 / STEL 5 ppm
- Gas Sampling
- Diffusion
- Response Time
- T90 in 30 seconds
- Data Logging
- 10 s interval = 5 hours / 5 min = 150 hours / 10 min = 300 hours
- Batteries
- 2 x AAA alkaline (all models) / Ni-MH (GP-03)
- Continuous Operation
- GP-03: 35 h alkaline, 30 h Ni-MH / CO-03 and HS-03: more than 3,000 h alkaline
- Safety Rating
- ATEX / IECEx / CSA C/US intrinsically safe Class I Div 1 Groups A B C D
- Enclosure
- IP67 dust and water resistant
- Dimensions
- 54 x 67 x 24 mm (2.1 x 2.64 x 0.94 in)
- Weight
- 80 g (2.8 oz)
- Operating Conditions
- -20 to 50 °C / below 90 % RH non-condensing
- Standard Accessories
- Rubber boot / alligator clip / data logging software / alkaline batteries / wrist strap
- Warranty
- GP-03: 2 years / CO-03 and HS-03: 3 years
Documents
Calibration and repair
Send it to our Montreal service team. We evaluate the instrument and send a detailed quote before any work starts.
Parts & accessories
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Price on quote
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Price on quote
Compare with similar models
RKI Instruments · Portable Gas Detector| Spec | This model RKI 03 Series Single Gas Monitors (GP-03 / CO-03 / HS-03)Price on quote
|  RKI GX-9000H Portable Multi Gas DetectorPrice on quote
|
|---|---|---|
| Gases | LEL / CO / H2S | O2 / CO / H2S / HC |
| Protection | IP67 | IP66/68 |
Questions, answered
How fast will I get a price?
Send the quote request and a specialist replies within 4 business hours, Monday to Friday, 8:00 to 4:30 ET.
Can we pay on account or by purchase order?
Yes. With established credit, terms are Net 30 days, and you can send your purchase order with the quote request. We also accept Visa, Mastercard and American Express.
How is shipping charged?
On quotes and account orders, freight is F.O.B. Montréal: the carrier charge is worked out at shipment from the packed weight and dimensions, and added to your invoice. In-stock items can also be picked up the same day in Montréal (8605 rue du Champ-d'Eau).
Can I return it?
Yes, within 30 days of purchase, with a return authorization number from customer service first. A 25% restocking fee applies, unless it is a defect covered by the warranty. Special orders, hazardous materials, flammable liquids and gases can't be returned. Return policy
Can ERE calibrate or repair it?
Yes. Our Montréal service shop calibrates and repairs it in-house. Request service
What warranty does it carry?
The manufacturer's warranty applies. The exact terms are in the warranty document. Read the warranty
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