BW Gas Alert Max XT II Series Multi-Gas Detector with Motorized Pump

The GasAlert Max XT II portable and multi-gas detector simultaneously monitors and displays up to four gases including hydrogen sulfide (H2S) carbon monoxide (CO), new 4-series oxygen (O2) sensor - SR-X10-C1 and combustibles (%LEL). The compact and field tough GasAlertMax XT II features a non-intrusive integrated sampling pump designed for performance, reliability and ease-of-use. SmartSample pump technology improves remote sampling result accuracy and ensures a consistent, uniform flow.

One-button operation guarantees ease of use even while wearing gloves. Tamper-proof, user adjustable options enable the instrument to be customized to suit your specific application. Confined space entry and remote sampling have never been so easy with new intelligent pump technology. Minimize pump blockages and improve remote sampling result accuracy. The GasAlertMax XT II is fully compatible with the MicroDock II automated test and calibration system.

Improved Oxygen O2 Sensor

The Max XT II uses an improved oxygen sensor SR-X10-C1 that lasts longer and ultimately helps reduce replacement costs and down time.

The older Max XT uses the SR-X-MC oxygen sensor and will not work with the Max XT II gas detector released June 2010.

What's Included:

  • GasAlertMax XT II detector
  • Sensors (user specified)
  • Stainless-steel alligator clip
  • Rechargeable battery
  • Charging adaptor
  • 3 ft. / 1 m calibration hose with quick connect
  • 10 ft. / 3 m sampling hose with particulate filter and quick connect
  • Reversible screwdriver
  • Pump filter spares (kit of 5)
  • Instructions and laminated quick reference card

Key Features:

  • Integrated sampling pump
  • SmartSample technology and powerful diaphragm pump provide reliable block detection and consistent, uniform flow
  • Easy-to-read, multi-language LCD displays all four gas concentrations (H2S, CO, O2 and combustibles) simultaneously
  • Visual, vibrating and audible alarm indicators
  • Low, High, TWA (time weighted average) and STEL (short-term exposure limit) alarms
  • LCD icons help with fast and easy notification of detector operation
  • Built-in concussion-proof boot
  • Simple auto-calibration procedure
  • Rechargeable batteries provide enough power for a 13-hour shift
  • Best in class block detection with semi-conductor pressure sensor
  • Easy, one-button interface for simple operation
  • Flexible user options minimize training
  • Tamper-proof field operation
  • Multi-language support in English, French, German, Spanish and Portuguese
  • Compatible with MicroDock II automated test and calibration system

Instrument dimensions: 13.1 x 7.0 x 5.2 cm (5.1 x 2.8 x 2.0 in.)
Weight: 300 g (10.6 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
Alarm setpoints: May vary by region and are user-defined
Detection range:
  • H2S: 0 - 200 ppm (1 ppm increments)
  • CO: 0 - 1000 ppm (1 ppm increments)
  • O2: 0 - 30.0% vol. (0.1% vol. increments)
  • LEL (combustible): 0 - 100% LEL (1% LEL increments) or 0 - 5.0% v/v methane
Sensor type:
  • H2S, CO, O2: Single plug-in electrochemical cell
  • LEL (combustibles): Plug-in catalytic bead
O2 measuring principle: Capillary controlled concentration sensor
Alarm conditions: TWA alarm, STEL alarm, low alarm, high alarm, multi-gas alarm, over limit (OL) alarm, low battery alarm, confidence beep, automatic deactivation alarm, pump alarm
Audible alarm: 95 dB+ at 30 cm variable pulsed beeper with full battery charge
Visual alarm: Red light-emitting diodes (LEDs)
Display: Alphanumeric liquid crystal display (LCD)
Backlight: Activates upon startup and when the pushbutton is pressed; deactivates after 10 seconds. Activates during an alarm condition and remains lit until alarm ceases
Self-test: Initiated during activation, self-test runs continuously while detector is operational
Calibration: Automatic zero and automatic span
User field options: Startup message, lockout on self-test error, safe mode, confidence beep, latching alarm, force calibration, cal IR lock, force bump, location logging, force block test, set datalog interval, set confidence interval, language selection.
Sensor Options: Sensor enable/disable, set span concentration values, set calibration interval, set bump interval, set alarm setpoints, set STEL interval, set TWA period, auto zero at startup enable/disable, 5% overspan, low alarm acknowledge, oxygen measurement, and combustible gas measurement
Battery operating time: One rechargeable lithium polymer battery at 20°C provides 13 hours operating runtime


This gas detector unit has the following replacement sensors available, depending upon individual configuration:

SR-X10-C1 Replacement oxygen (O2) sensor
SR-W-MP75C Replacement MICROpeL combustible (LEL) sensor
SR-H-MC Replacement MICROceL® hydrogen sulfide (H2S) sensor
SR-M-MC MICROceL® carbon monoxide (CO) sensor


Ask about this product