GasAlertMaxXT II
User Manual
66
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
Alarm setpoints: May vary by region and are user-defined
Detection range:
H
2
S: 0 – 200 ppm (1 ppm increments)
CO: 0 – 1000 ppm (1 ppm increments)
O
2
: 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:
H
2
S, CO, O
2
: Single plug-in electrochemical cell
LEL (combustibles): Plug-in catalytic bead
O
2
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% over-
span, low alarm acknowledge, oxygen measurement, and combustible
gas measurement
Maximum hose length for sampling: 75 ft (22 m)
Maximum hose length for calibration: 3 ft (0.9 m)
Battery operating time: One rechargeable lithium polymer battery at
20°C provides 13 hours operating runtime
Year of manufacture: The detector’s year of manufacture is determined
from the serial number. The first and second number after the first two
letters determines the year of manufacture.
Example: MA110
-001000 = 2010 year of manufacture
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