Meters, Test Kits, Inspection Supplies & Tools!

MiniMAX CO, H2S, O2 & LEL (MAX-4OFCHK) Water/Dust Resistant

Model #: MAX4-OFCHK

Condition: New

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MiniMAX X4 is an unsurpassed portable gas detector for protection against flammable, oxygen, carbon monoxide and hydrogen sulfide gas hazards. MiniMAX X4 focuses on ease of use by offering only the functionality required to comply with legislation. Everything that a user ROUTINELY HAS TO DO can be achieved with a single button press! Keeping it simple reduces training requirements and enables use in a wider range of industries. Ease of use doesn't mean basic functionality. For example, every instrument has the capability to log data using a simple to fit memory card (the type you get in a digital camera). Events, gas data and calibration history are all stored and the free software downloaded from our web site enables you to graph or print reports at the press of a button. Convenience and the way users want to work is an important consideration. When clipped to the belt or harness, users may want the re-assurance of being able to view the display from different positions. But with many other units the display is upside down forcing the user to remove the unit to look at the display, perhaps creating a hazard. MiniMAX X4 users can ´flip´ the display at the press of a button for that added convenience and safety. With an ultra clear backlit display, vibrating and powerful audiovisual alarms, the MiniMAX X4 demands attention when gas hazards are detected in even the most adverse working conditions. All in all, MiniMAX X4 offers reliable, easy to use gas detection to keep you safe.


  • Includes: Windows® Data Logging & Reporting Software
  • Includes: NiMH rechargeable battery pack, charging cradle & universal AC power converter
  • Calibration certificate
  • Tubing & flow adaptor & crocodile clip
  • Instruction manual & quick start guide
  • Tough Durable Housing
    • Small and lightweight
    • Rugged, impact and weather resistant
    • Includes crocodile clip or optional belt clip
  • Easy to Use:
    • Works straight out of the box
    • Single button on / off operation & intuitive icons suitable for all languages
    • User configurable via menu w/interactive product training guide available
  • Ultra Clear Backlit Display
    • Unique 'flip display' at the press of a button
    • Continuous reading of gas levels
    • TWA / STEL and two instantaneous alarm levels with peak hold facility
    • Battery life, calibration and self-test status
  • Effective Gas Alarm Indication
    • Alarm and backlight combine to demand attention
    • Distinctive, loud, two-tone audible alarm
    • Vibrating alarm supplied as standard
  • Reliable Operation
    • Self-test on start up or on demand checks display, battery, sensor, audiovisual and vibrating alarms
    • Uses patented SureCell™ sensor technology and Reflex™ cell check technique
    • Includes TempraSURE™ thermal compensation and shock protection
    • Periodic flash and / or beep for increased confidence (user configurable)
  • Unsurpassed RFI Performance
    • Can be used alongside walkie-talkies or cell phones
    • Exceeds the toughest industrial standards for RFI immunity
  • Cost Effective
    • Minimum 2 year sensor life
    • Initial and on-going running costs minimized


  • Gases Detected:
    • Range:
      • Flammable (Exp): 0 to 100% LEL (can display gas concentration in %vol units for a range of flammable gases)
      • Oxygen (O2): 0 to 30% vol
      • Carbon Monoxide (CO): 0 to 999 ppm
      • Hydrogen Sulfide (H2S): 0 to 250 ppm
  • Sensors: Patented SureCell™ electrochemical and catalytic bead sensing technology for stable and reliable performance in all industrial environments.
  • Diagnostics: Self-test of circuitry, battery, LCD, and sensors on start up or on demand. Patented Reflex™ cell check techniques included as standard for toxic channels.
  • Display: Ultra clear icon driven backlit LCD displays gas level and detector status. Unique 'flip display' function at the press of a button for added user convenience. Time and date; High/Low Peak memory
  • User Interface: Intuitive three button operation for detector configuration.
  • Audible Alarm: 90 db at 30cm away
  • Visual Alarm: High intensity red LEDs combined with red backlight for maximum effect.
  • Vibrating Alarm: Supplied as standard.
  • Operating Temperature: -4° to 122°F (-20° to 50°C). TempraSURE™ temperature compensation.
  • Humidity: 5-95% RH (non-condensing).
  • IP Rating: Ingress protection to IP65.
  • Intrinsic Safety/Approvals:
    • North America: Class I, Div 1, Groups A, B, C, D T4.
    • Europe: ATEX II 2G EEx ia d IIC T4. (specific version only)
    • Canada: certified to CSA C 22.2-152 and CSA C22.2-157.
  • RFI/EMC: CE EN50270:1999 and EN55011.
  • Sensor Life: Minimum of 2 years backed by inclusive 2 year warranty.
  • Battery Life: 12 hours per charge minimum, with rechargeable NiMH batteries (low power audiovisual alert)
  • Dimensions: 4.88" (H) x 2.99" (W) x 1.41"(D)/(124 (H) X 76 (W) X 36 mm (D))
  • Weight: 7.40 oz [210 g] (without batteries), 9.10 oz [258 g] (with batteries)
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Manufacturer Info