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T4 Personal 4-Gas Monitor

Crowcon T4 Personal 4-Gas Monitor is the most rugged 4 multi-gas personal monitor on the market... it‘s the only one to accurately track exposure over a whole shift.

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  • Competitive quote
  • Expert technical advice/demos
  • Trusted aftercare support




Crowcon T4 Personal 4-Gas Monitor

Portable gas detection is primarily used by mobile workers who have to work within an environment that is not monitored by fixed gas detection equipment and there is a risk of toxic, combustible / flammable gases or asphyxiation. Portable equipment is also a cost-effective solution for monitoring areas that are not commonly used.

The Crowcon T4 offers you compliance, robustness and low cost of ownership in a simple to use solution!

T4 is Crowcon’s personal protection solution for detecting the four most common gas hazards:

  • Carbon Monoxide (CO)
  • Hydrogen Sulphide (H2S)
  • Flammable Gases
  • Oxygen Depletion (O2)


Crowcon’s visual ‘traffic light’ indication, provides constant visual assurance that T4 is operating soundly and conforms to site bump test and calibration policy. The bright green and red Positive Safety LEDs are visible to all and offer a quick, simple and comprehensive indication of monitor status to both the user and others around them.

Now with improved detection of pentane, hexane and other long chain hydrocarbons.


Crowcon T4 Key Features:

T4 offers a wide range of powerful features to make everyday use easier and safer:

  • Easy-to-use
    • Large single button
    • Intuitive menu system allows T4 to be operated wearing gloves
    • Minimal training required
  • Built for your environment
    • Most rugged detector yet
    • Includes an integrated rubber boot as standard
    • 4 metre drop tested onto concrete
    • Withstands the harshest conditions
    • Water and dust resistant (IP65 and IP67 ingress certification)
    • Optional clip-on filter cover, easy to remove and replace (ensures sensors are protected in the dirtiest environments)
  • Data ready
    • Gives you quick and clear, actionable insights
    • Logs all data relating to readings
    • Logs alarms and bump tests
    • All data stored in unit and easily extracted
  • Time weighted average (TWA) resume
    • Unique to the T4, the TWA Resume function calculates toxic gas exposure over an entire shift, even if switched off for a period of time
    • The only portable monitor to measure TWAs when turned off for a period of time
    • Patented technology only available on Crowcon T4
  • Good battery life and lightweight
    • 18 hour battery life; the battery lasts for even the longest shift patterns and can be used across shifts
    • Weighs in at 282g
  • Use with CROWCON Connect∞


The Crowcon T4 is ideal for:

  • Utilities
    • High data capability
    • Ideal for working with large fleet of devices
    • Guaranteed workforce compliance
    • Monitors falling O2 levels in confined spaces
    • Tracks H2S levels in dirty water facilities
  • Refineries
    • Features most prevalent 4x gases
    • Rugged and hardwearing technology
    • Compatible with 10 unit chargers ideal for pool fleet use
    • Optional external filter plate for sensors to avoid dust
  • Steel Plants
    • Can be supplied with a hydrogen-immune CO sensor
    • Perfect for the steel industry where normal CO sensors are poisoned by hydrogen


What comes with the Crowcon T4?

  • Crowcon T4 Portable Personal Multigas Detector
  • Integrated Alligator Clip and Tethering Loop
  • Bump/Calibration Plate


Technical Specification for: Crowcon T4 Personal 4-Gas Monitor

Oxygen (O2)0-30% Vol.
Flammable0-100% LEL
Hydrogen sulphide (H2S)0-100ppm
Carbon monoxide (CO)0-1000ppm
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