Description

The WatchGas SST1 configured for CO (Carbon Monoxide) is a compact, rugged single-gas detector purpose-built for continuous personal monitoring of this toxic gas, measuring 0–2000 ppm with a 1 ppm resolution and a fast sub-10-second T90 response time. It comes pre-set with low and high alarms at 35 ppm and 200 ppm respectively, alongside STEL (100 ppm) and TWA (20 ppm) exposure limits to help protect workers against both acute and cumulative exposure. Housed in an IP65/68-rated, replaceable-battery and replaceable-sensor design, it’s built for demanding industrial environments where reliable, long-term CO (Carbon Monoxide) detection 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, High, STEL, and TWA alarm levels (the datasheet doesn’t specify a vibration alarm)
• Detects/measures: CO gas, 0–2000 ppm range, with STEL (100 ppm) and TWA (20 ppm) exposure tracking
• Resolution: 1 ppm — precise readout across the full detection range
• Response time: T90 <10 seconds — near-instant reaction to gas exposure
• Alarm setpoints: Low alarm at 35 ppm, High alarm at 200 ppm
• 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