O2 Oxygen Gas Detector – WatchGas

The WatchGas SST1 configured for O2 (Oxygen) is a compact, rugged single-gas detector purpose-built for continuous personal monitoring of oxygen levels, measuring 0–25% Vol with a 0.1% Vol resolution and a fast sub-10-second T90 response time. It comes pre-set with low and high alarms at 19.5% Vol and 23.5% Vol respectively, warning workers of both oxygen-deficient and oxygen-enriched atmospheres (STEL and TWA exposure limits do not apply to this configuration). Housed in an IP65/68-rated, replaceable-battery and replaceable-sensor design, it’s built for demanding industrial environments where reliable, long-term O2 (Oxygen) monitoring is critical.

Key Features:

• Dimensions: 83 x 49 x 20 mm (3.3 x 1.9 x 0.8 in)
• Weight: 88 g (3.1 oz)
• Alarm type: 95 dB audible alarm (industry-standard loudness at 30 cm) paired with visual alerts on the large LCD display, covering Low and High alarm levels
• Detects/measures: O2 gas, 0–25% Vol range
• Resolution: 0.1% Vol
• Response time: T90 <10 seconds — near-instant reaction to changes in oxygen level
• Alarm setpoints: Low alarm at 19.5% Vol (oxygen-deficient), High alarm at 23.5% Vol (oxygen-enriched)
• Battery life: Up to 2 years (shorter than other SST1 gas configurations, which run up to 3 years)
• Durability: IP65/68-rated housing, built for harsh industrial environments
• Serviceability: Replaceable battery and replaceable sensor module, extending the unit’s usable life
• Connectivity/management: NFC “tap and go” for fleet management, event logging (last 100 events), and configuration via the WatchGas Device Link App or SST Dock

Standards:

• ATEX, IECEX, UKEX : II 1 G Ex ia IIC T4 Ga I M1 Ex ia I Ma
• AS/NZS 60079 – Explosive atmospheres, Part 14: Design selection, erection and initial inspection