T4 integrates innovative safety features and an intuitive, rugged design to provide advanced protection for those working in harsh environments. This portable multigas detector, which is exceptionally easy to use and service, protects against the four most prevalent gas hazards: carbon monoxide (CO), hydrogen sulphide (H2 S), flammable gases and oxygen (O2 ) depletion.
TWA Resume ensures time weighted average (TWA) toxic gas exposure is calculated accurately over an entire work shift. The red line on the graph shows workers with other detectors risking overexposure to hydrogen sulphide (H2 S) by switching their detector off for a lunch break. Only T4 provides the option to include previous measurements in the calculation when you switch your detector back on again and so prevent you exceeding your exposure limit. Because of TWA Resume (green line), T4 alarms at 14:00 when their 8 hour TWA reaches 5ppm.
With a battery life of 18 hours, T4 allows multiple or longer shifts to be worked between recharging.
Crowcon’s visual ‘traffic light’ indication, provides constant visual assurance that T4 is operating soundly and conforms to site bump test & 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.