Operator’s manual for the BW Technologies GasAlertMax XT II gas detector, covering safety, operation, calibration and specifications.
The GasAlertMax XT II is a personal safety gas detector that warns of hazardous gas levels above user‑defined alarm setpoints. This manual provides essential information for safe operation, calibration, battery handling, and maintenance.
Key sections include safety cautions, a description of the detector’s parts and display elements, detailed instructions for push‑button functions, calibration and bump‑test procedures, alarm indications, and full technical specifications.
| Instrument dimensions | 13.1 x 7.0 x 5.2 cm (5.1 x 2.8 x 2.0 in.) |
|---|---|
| Weight | 328 g (11.6 oz.) |
| Operating temperature | -20°C to +50°C (-4°F to +122°F) |
| Storage temperature | -40°C to +60°C (-40°F to +140°F) |
| Operating humidity | 10% to 100% relative humidity (non‑condensing) |
| Dust and moisture ingress | IP66/67 |
| Detection range – H2S | 0 – 200 ppm (1 ppm increments) |
| Detection range – CO | 0 – 1000 ppm (1 ppm increments) |
| Detection range – O₂ | 0 – 30.0% vol. (0.1% vol. increments) |
| Detection range – Combustible (LEL) | 0 – 100% (1% LEL increments) or 0 – 5.0% v/v methane |
| Sensor type – Electrochemical | H2S, CO, O₂: Single plug‑in electrochemical cell |
| Sensor type – Catalytic bead | Combustibles: Plug‑in catalytic bead |
| Battery part number | MX‑BAT01 |
| Maximum calibration hose length | 3 ft (1 m) |
Zero the sensors by following steps #1‑3 in the Calibration section on page 7.
Sensors must be calibrated at least once every 180 days (6 months).
The calibration hose may be up to 3 ft (1 m) long.