RKI Instruments

RKI Instruments GasWatch 3 O2 Single Gas Monitor 72-0012

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RKI Instruments GasWatch 3 O2 Single Gas Monitor is one of the world’s smallest and lightest single-gas monitor. Weighing just 1.6 ounces, its compact form affords great comfort and flexibility in how you choose to wear it. It can be worn on your wrist as a watch, or clipped into your breathing zone on your lapel, hard hat or other safety equipment with its 360 degree rotation alligator clip. A small, field-replaceable, coin-type lithium-ion battery gives the GasWatch 3 O2 up to 4,000 hours of continuous operation.

Applications: Refineries, Petrochemical facilities, Sewage treatment plants, Fire departments, Chemical plants, Tunnels, Mines, Hazardous waste sites

Key Features:

  • 2 years for O2 sensor
  • Up to 4,000 hours of operation
  • Light and compact "watch type" design
  • Comfortably wear in your breathing zone
  • Available with watch band or alligator clip
  • Automatic backlight during alarm
  • Sturdy IP-66/68 rated design
  • Water, dust and radio frequency (RF) resistant
  • Non-compliance indicator
  • Detection Range: 0 ~ 25.0% Vol. (0.1)
  • Service Range: 25 ~ 40.0% Vol. (0.1)

Specification Sheet: Specification Sheet

Quick Reference Guide: Quick Reference Guide

O2 GasWatch 3 Manual: 

Set Program Manual: 

Datalogging Program Manual: Datalogging Program Manual:

Part Numbers:
72-0012 GasWatch 3, O2, Galvanic sensor, with alligator clip
72-0012-01 GasWatch 3, O2, Galvanic sensor, with wrist band

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Additional Information

Gas Type:
Oxygen (O2)
Country of Origin:
0.10 LBS
2.50 (in)
1.60 (in)
0.86 (in)
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