Model GB300

The hand-held GB 300 is designed for use in a wide variety of applications from diving to fine tuning boilers.​

This model incorporates a Micro-fuel Cell sensor for quick and accurate analysis of oxygen. It is maintenance-free, sealed, the electrochemical cell is specific to oxygen, is insensitive to flow rate and has a 90% response in less than 10 seconds. At the end of its life, the cell is discarded and replaced like a flashlight battery.

Since it is constructed of high impact resistant materials, it provides unparalleled performance under the harshest conditions. The unit is powered by 3 AA batteries which should last for at least 2,000 hours of use.

• Detects oxygen with sealed, maintenance-free micro-fuel cell technology

​• Class I-17 sensor with 36-month expected life (with air exposure)

• Range: 0-100% O2 with 0.1% O2 resolution

• High-impact design for lightweight yet rugged electronics

• Single button operation for power and air calibration

• 2.5-digit display and battery indicator

• Automatic diagnostics with error codes to simplify troubleshooting

• 0-1V analog output (optional RS-232 digital output)

• RFI-hardened design

• Includes analyzer with three AA batteries, I-17 sensor and coiled sensor cable that extends to ten feet

• Diving application
• Fine tuning boilers

Model GB300 Brochure​

Model GB300 Declaration of Conformity​