• Single Gas Clip-On Personal Monitor

Single Gas Clip-On Personal Monitor

  • Carbon Monoxide, Hydrogen Sulfide, Oxygen, Combustible gas

Can we help you?


Model : OX-03

  • 0-40 % O2
  • Alligator clip
  • Alkaline batteries


Model : GP-03

  • 0-100 % LEL
  • Alligator clip
  • Alkaline batteries


Model : CO-03

  • 0-500 ppm CO
  • Alligator clip
  • Alkaline batteries


Model : HS-03

  • 0-100 ppm H2S
  • Alligator clip
  • Alkaline batteries

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 approval to U.S. and Canadian standards for Class I, Division 1, Groups A, B, C, and D atmospheres.


  • 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


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