MULTI-GAS MONITOR FOR CONFINED SPACE

APPLICATIONS

MULTI-GAS MONITORS

The typical 4 gas monitor used for confined space entry has ability to monitor 4 gases (O2, LEL, and two toxic gas sensors) simultaneously in one compact monitor with sampling pump. They have a loud audible alarm that varies for different alarm conditions and an optional external vibration alarm for noisy areas.

MULTI-GAS MONITOR FOR CONFINED SPACE APPLICATIONS

Gas Monitor Range Resolution

Oxygen 0-30%0.1%

Combustible Gas 0-100% LEL1% LEL

Carbon Monoxide 0-500 ppm 1 ppm

Hydrogen Sulfide 0-100 ppm 1 ppmNitric Oxide 0-250 ppm 1 ppm Hydrogen Cyanide 0-100 ppm 1 ppm

TYPICAL SENSOR SPECIFICATIONS

FOUR GASES ARE LESS THAN TOTAL PROTECTION

Most confined space monitors provide less than total protection because they miss many toxic vapors and gases. LEL sensors measure explosivity, not toxicity. Many Volatile Organic Compounds (VOCs) are potentially toxic at levels that are well below the sensitivity of the LEL sensors found in most multi-gas monitors.

ADVANTAGES OF 4 GAS METERS

• Alarms for separate sensors can also be set for Short Term Exposure Levels (STEL), Time Weighted Average (TWA), Peaks and Minimums.

• You can measure oxygen levels. This is critical to confined space entry operations.

• You measure LEL % directly, also a confined space entry requirement.

BEST COMBINATION

• Combine a PID and a 4-gas monitor and you have true protection from the unexpected.

• Sensors (LEL, O2, H2S, CO & 10.6eV PID)

• When doing confined space work, you may need the added broadband protection of a PID.

• Measure volatile organic compounds (VOC's) in low parts per million, including benzene, gasoline, butadiene, trichloroethylene and vinyl chloride.

BOTTOM LINE

• In confined space entry, you must measure oxygen and LEL %. Therefore, the 4 gas meter is required.

• In unknown situations, consider the addition of the PID to the 4 gas meter.

• Remember that PIDs are NOT VOC specific.

• Combination instruments are available to rent.

Be safe!Be safe!