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RKI Instruments 03 Series O2 Single Gas Monitor 72-0010

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RKI Instruments

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RKI Instruments 03 Series O2 Single Gas Monitor can be operated continuously for at least 3,000 hours on (2) AAA size alkaline batteries. The 03 models have 2 preset alarms that are user adjustable. The gas reading is easily viewed on easy to read LCD display that has auto backlighting. Equipped with visual, audible, and vibration alarms as standard. This is a pocket size monitor that weighs 2.8 ounces. Uses a Galvanic cell sensor with a detection range of 0 - 40 % vol. The OX-03 has a 2 year warranty.

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

Key Features:

  • Operates 3,000 hours on alkaline batteries
  • Pocket size 2.1 in. (W) x 2.6 in. (H) x 0.9 in. (D)
  • Lightweight (2.8 oz.)
  • Impact, dust, and water resistant (IP-67)
  • Replaceable rubber boot
  • Data log from 5 to 300 hours with adjustable intervals
  • Audible / visual / vibration alarms
  • Automatic backlight
  • Low battery alarm


  • Oxygen (O2)
  • Detection principle: Galvanic cell
  • Detection range: 0- 40 percent volume
  • Alarm set points: Low - 19.5 percent volume High - 23.5 percent volume Over - 40.0 percent volume
  • Alarm types: 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 sampling: Diffusion
  • Response time: T90 in 20 seconds (Alarms within 5 seconds when exposed to 12 percent O2)
  • Accuracy: 5 percent O2
  • Data logging: 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
  • Continuous operation: Alkaline dry cell: more than 3,000 hours (at 25 degrees C, no backlight)
  • Safety rating: ATEX/IECEx approved. CSA classified, C/US, as intrinsically safe, Class I, Division 1, Groups A, B, C, D (pending)
  • Enclosure: Dust and water resistant with IP-67 rating
  • Display: Digital LCD, gas name & concentration, auto backlighting during alarm, operation icon, battery icon
  • 2 year warranty
  • Replacement sensors are the same used in the GX-2009r

Monitor Includes:

  • Rubber protective boot
  • Alkaline batteries
  • Alligator clip
  • Wrist strap
  • Data log software
  • NO CAL CAP included

Please Note: Once activated, these units cannot be shut down and will continue to run for their life span prohibiting these items from being shipped because the alarm may be activated during transit. Additionally, these items are unable to be resold after activation. Of course, if you haven't yet activated your monitor, we will happily take it back.

Optional Accessory: Downloading cable, USB / IrDA adapter

Part Numbers:
72-0010 - Monitor only

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