Four-gas pumped detector for confined-space entry that can also be worn in diffusion mode. It samples up to 33 m and runs up to 6 working days (LPC) or 12 working days (IR). IP65/68, ATEX/IECEx Zone 0.
Specifications
| Gases | O2, LEL, CO, H2S, SO2 (up to four shown simultaneously) |
|---|---|
| O2 sensor | 0–25 % vol, res. 0.1 % vol; alarms low 19.5 % / high 23.5 % |
| LEL sensor options | Low Power Catalytic, Catalytic Bead or Non-Dispersive Infrared; 0–100 % LEL, res. 1 % LEL; alarms low 10 % / high 20 % |
| CO sensor | 0–2000 ppm, res. 1 ppm; alarms low 35 / high 200 ppm; TWA 20, STEL 100 ppm |
| H2S sensor | 0–500 ppm, res. 0.1 ppm; alarms low 10 / high 15 ppm; TWA 10, STEL 15 ppm |
| SO2 sensor | 0–100 ppm, res. 0.1 ppm; alarms low 5 / high 10 ppm; TWA 2, STEL 5 ppm |
| Sampling | Internal pump, bottom hose connection, up to 33 m sampling; optional diffusion mode |
| Typical battery life | LPC low power catalytic: 50 h; HP LEL: 18 h; IR: 100 h (about 6 / 12 working days of 8 h for LPC / IR) |
| Charging time | 5–6 hours (induction) |
| Size | 150 × 62.2 × 32.4 mm (+4 mm with alligator clip) |
| Weight | 275 g |
| Operating temperature | -20 to +60 °C |
| Humidity | 5–95 % RH (non-condensing) |
| Event logging | 100 events |
| Data logging | 6 months |
| Ingress protection | IP65 / IP68 |
| Communication | NFC – WatchGas SST App, compatible with i.Safe intrinsically safe phones/tablets |
| Calibration interval | 6 months (industry standard) |
| Alarm | 95 dB at 30 cm; factory set points adjustable via SST Dock and App; backlit display |
| Warranty | 2 years |
| Applications | Confined spaces, storage tanks, sewage networks, mining, utility networks, food production, industrial sites, ship holds and engine rooms |
| Accessories | Ball float 7182112; SST range probe SST-PROBE; Last-o-More tubing per metre 5×8 mm (411-0018-039) / 3×5 mm (411-0018-038); universal cradle charger SST-IND-S; 5-way stackable charging cradle SST-STACK-CHR; lanyard bar SST4-POUL-10; SST Dock; SST RTR web reporting software |
Standards & Certifications
- ATEX / IECEx / UKEX (LEL-LPC & LEL-CAT): II 1 G Ex ia IIC T4 Ga; I M1 Ex ia I Ma
- ATEX / IECEx / UKEX (LEL-IR): II 1 G Ex ia op is IIC T4 Ga; I M1 Ex ia op is I Ma
- North America: Class I Division 1 Groups A, B, C, D T4
- US: Class I Zone 0 AEx ia IIC T4 Ga (IR: AEx ia op is IIC T4 Ga)
- Canada: Ex ia IIC T4 Ga (IR: Ex ia op is IIC T4 Ga)
- EN 50270:2015+AC:2016
- EN 301 489-1 V2.2.3
- EN 301 489-3 V2.1.1
- RoHS EN 63000:2018
For pricing and availability, please request a quotation.

