RKI 04 Series of Pocket Size Single Gas Monitors

RKI 04 Series of Pocket Size Single Gas Monitors

Cost effective, compact, and long-lasting personal gas monitoring option.

RKI are proud to present the new 04 Series featuring the newly developed ‘R’ sensor installed for improved performance and field durability.

The new lineup includes O2, H2S, CO gas and toxic HCN, NO2, SO2 sensors with one of the world's longest continuous operating times. The 04 Series Sensors have a life expectancy of over 3 years and backed by a 3 year warranty. Intrinsically safe explosion-proof construction. Water and dust resistant meets IP67 Robust design (Withstands 7m drop). Each miniaturised sensor is manufactured with the same high quality control that has made RKI sensors and instruments the most reliable and long lasting monitoring devices in the industry.

RKI 04 Series Pocket Size Single Gas Monitors pictured in hand


Additional features of the GX-3R Pro

  1. Now with a continuous operating time of up to 9,000 hours
    1. With these products, we’ve achieved continuous operating times of approximately 9,000 hours*, among the best figures for a compact portable multi gas monitor.
      *OX-04G/CO-04/HS-04
  2. Passed 7 m drop resistance test
    1. Reduces the risk of damage to the device when working in elevated locations for use with confidence.
  3. Incorporates durable new R sensor with advanced functions
    1. Completely upgraded sensors. The sensor’s superior durability and performance are backed by a three-year warranty (one year sensor warranty for OX-04G).
    2. Usable across a wide range of temperatures (-40 °C to +60 °C)
    3. We offer a lineup of carbon monoxide sensors almost entirely resistant to hydrogen interference. They’re ideal for use in environments like steel facilities where hydrogen is present.
    4. RKI are the first Japanese manufacturer to offer a lineup of dual carbon monoxide and oxygen sensors, bringing two-channel detection to the market in a compact and portable form factor.


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  1. CO (Carbon Monoxide) gas monitor. 3 year warranty. Approx. 3000 hours continuous operating time on 2x AAA batteries. Learn More
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    SKU #R73.0065RK | MFR #73-0065
  2. Carbon monoxide gas monitor with reduced hydrogen interference. 3 year warranty. Approx. 6200 hours continuous operating time on 2x AAA batteries. Learn More
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    SKU #R73.0067RK | MFR #73-0067
  3. Smallest personal gas monitor on the market. 3 year warranty. Approx. 4600 hours continuous operating time on 2x AAA batteries. Learn More
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    SKU #R73.0069RK | MFR #73-0069
  4. H2S (Hydrogen Sulphide) gas monitor. 3 year warranty. Approx. 9000 hours continuous operating time on 2x AAA batteries. Learn More
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    SKU #R73.0063RK | MFR #73-0063
  5. O2 (Oxygen) gas monitor. 3 year warranty. Approx. 3000 hours continuous operating time on 2x AAA batteries. Learn More
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    SKU #R73.0018RK | MFR #73-0018
  6. HCN (Hydrogen Cyanide) gas monitor. 3 year warranty. Approx. 3000 hours continuous operating time on 2x AAA batteries. Learn More
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    SKU #R73.0071RK | MFR #73-0071
  7. Nitrogen Dioxide (NO2) gas monitor. 3 year warranty. Approx. 3000 hours continuous operating time on 2x AAA batteries. Learn More
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    SKU #R73.0073RK | MFR #73-0073
  8. SO2 (Sulphur Dixoxide) gas monitor. 3 year warranty. Approx. 3000 hours continuous operating time on 2x AAA batteries. Learn More
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    SKU #R99.3400RK | MFR #73-0081
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About Riken Keiki Instruments (RKI)

First established in 1939, Riken Keiki Co. Ltd., is a specialist provider of environmental measurement and gas detection safety products.

Founded
1939
Headquarters
Tokyo, Japan
Website
Riken Keiki Products Page (Japan)
RKI Instruments Website (USA)