Portable Gas Detectors

Multi-Gas Detector XA-4400II


For safety check by wearing at construction site and steel plant, safety of site workers.


  • 40 hours or more of continuous operation with a single AAA Battery (when used in long-life mode)
  • Compact and lightweight
    70 (W) x 72 (H) x 20 (D) mm, approx. 130g
  • Sounding alarm, three flashing lights and vibrations
    Alarm sound more than 95dB / 30cm
  • Ingress Protection is IP67
    Water and dust proof. Can be used outdoors on a rainy day
  • Intrinsically Safe (Ex ia II CT 3)
    Complies with hydrogen and acethylene explosion proof requirements
  • Sensor life of 2 years


Model XA-4000II
Gas Detected Combustible Gas
(Methane orisobutane)
Oxygen Hydrogen Sulfide Carbon Monoxide
Detection Principle Catalytic








Sampling Method Diffusion
Detection Range 0 to 100 %LEL

(101 to 110 %LEL)*1

0 to 25.0 vol%

(25.1 to 50.0 vol%)*1

0 to 30.0 ppm

(30.1 to 50.0 ppm)*1

0 to 300 ppm

(301 to 2000 ppm)*1

Display Resolution 1%LEL 0.1vol% 0-35ppm: 0.1ppm
35-150ppm: 0.5ppm
0-350ppm: 1ppm
350-2000ppm: 5ppm
Alam Set Value 1st alarm: 10%LEL
2nd alarm: 30%LEL
1st alarm:

2nd alarm:


1st alarm: 10.0ppm
2nd alarm: 15.0ppm
1st alarm: 50ppm
2nd alarm: 150ppm
Operating Temperature/Humidity -20 to +50 °C, 30 to 85 %RH (non condensing)
Continuous Use Time Approx. 40 hours when the long-life mode is ON / Approx. 20 hours when the long-life mode is OFF
Approx. 1200 hours without combustible gas sensor (at 25 degrees C, without alarm,backlight OFF)
Power Source 1 x AAA Panasonic alkaline battery
Display LCD
Gas Alarm Buzzer sound, Flashing RED lamp, Vibration, LCD (automatic recovery)
Intrinsically safe Ex ia IIC T3 X (TIIS)
II 1 G Ex ia IIC T3 Ga (ATEX)
Class I, Zone 0, AEx ia IIC T3 Hazardous Locations. (UL) *pending
Ingress Protection IP67
Function Self-diagnosis (sensor trouble), Automatic air adjustment, Remaining battery level,
Peak-hold, LCD backlight, Buzzer stop for gas alarm, Time & Temperature indication,
Alarm test, Buzzer volume, Silent mode, Long-life mode, Data logging (datalogger kitis necessary for logging)
Dimensions W70 x H72 x D26 mm (excluding protrusions)
Weight Approx. 130g (excluding battery)
Accessories Safety-Pin band, alkaline battery, 2 x filter element for replacement
Options Datalogger kit, soft case, belt clip

*1: Service Range


ATEX_logo     ULÏ°¸.ai*pending     CE_logo


Type Approved by TIIS Explosion-proof certification

Selectable Gases

oxygen【O2】, carbon monoxide【CO】, hydrogen sulfide【H2S】, methane【CH4】 or isobutane【i-C4H10】

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For telephone inquiries, please call your nearest New Cosmos Electric office.

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