WatchGas SST4 Mini 4 Gas Monitor -
SST4 Mini is versatile, similar to the slightly smaller SST4 Micro. It offers an optional NDIR or traditional high-powered catalytic bead as the detection method for LEL, which is essential in some applications.
As many industries move from single gas to a multigas approach, it is essential for end-user adoption. The SST4 Range is designed with simplicity, size, and with the user in mind. With its compact yet rugged design, the SST4 is there when needed. From use in the hot temperatures of the steel industry or Hazmat users to the extreme environments in the Oil and Gas industry. With a wide range of user options, the SST4 can be tailored for many use cases and applications. The device can be set up simply by using the WatchGas SST application, calibration, and bump test records. With Compliance Check, it has never been easier to manage, maintain, and ensure maximum uptime of your fleet of devices.
| Size | SST4 Micro: 103.9mm x 62.4mm x 26.1mm SST4 Mini: 107.9mm x 62.4mm x 26.1mm *Dimensions are stated without alligator clip. Please add 4mm in depth for dimensions with alligator clip. |
| Weight | SST4 Micro: 184g SST4 Mini: 188g |
| Operating Temperature | -40 to +60°C / -40 to +140°F |
| Humidity | 5% - 95% RH (non-condensing) |
| Typical battery life | SST4 Micro: LEL Low Power Catalytic – 48hr SST4 Mini: LEL Catalytic Bead Sensor – 13hr SST4 Mini: LEL NDIR – 200hr |
| Induction Charger | 2-3 hours |
| Event logging | 100 events |
| Data logging | 6 months |
| IP | 65/68 |
| Communication | NFC |
| Calibration | 6 months as industry standard |
| Certifications & Approvals | North America: (Extra’s are needed) Class I, Div. 1, Gr. A, B, C, D. Class I, Zone 0, Gr. IIC ATEX/IECEx/UKEX LEL-LPC and LEL-CAT II 1 G Ex ia IIC T4 Ga I M1 Ex ia I Ma -40°C ≤ Tamb ≤ +60°C EN 50270:2015+AC:2016, EN 301 489-1 V2.2.3 EN 301 489-3 V2.1.1, RoHS EN63000:2018 |
| Warranty | 2-year warranty as standard |
| Sensor Type | Range | Resolutions | Low Alarm | High Alarm | TWA | STEL |
| O2 Oxygen |
0-25% vol | 0.1% vol | 19.50% | 23.50% | N/A | N/A |
| LEL Low Power Catalytic (SST4 Micro) |
0-100% LEL | 1 %LEL | 10% | 20% | N/A | N/A |
| LEL CAT LEL Catalytic Bead (SST4 Mini) |
0-100% LEL | 1 %LEL | 10% | 20% | N/A | N/A |
| LEL Non-Dispersive Infrared Sensor (SST4 Mini) |
0-100% LEL | 1 %LEL | 10% | 20% | N/A | N/A |
| CO Carbon monoxide |
0-2000 ppm | 1 ppm | 35 ppm | 200 ppm | 20 ppm | 100 ppm |
| H2S Hydrogen sulphide |
0-500 ppm | 0.1 ppm | 10 ppm | 15 ppm | 10 ppm | 15 ppm |
| SO2 Sulphur dioxide |
0-100 ppm | 0.1 ppm | 5 ppm | 10 ppm | 2 ppm | 5 ppm |
SST4 Diffusion: 4 Gas Monitor -
| Part Number | Description | LEL Technology |
| SST4-MINI-X2OMH-Y | WatchGas SST4 Mini LEL CAT/O2/CO/H2S (unfiltered) | CAT Bead |
| SST4-MINI-X2OSH-Y | WatchGas SST4 Mini LEL CAT/O2/SO2/H2S | CAT Bead |
| SST4-MINI-X3OMH-Y | WatchGas SST4 Mini LEL NDIR/O2/CO/H2S (No H2 or C2H2) | Non-Dispersive IR |
| SST4-MINI-X3OSH-Y | WatchGas SST4 Mini LEL NDIR/O2/SO2/H2S | Non-Dispersive IR |
