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Safety Articles

Article # 9550

Safety Q & A

What are the three most widely used types of gas detection or monitoring devices, and how are they used?

The different types of gas detection or monitoring are badge dosimeters, portable electronic measuring instruments, and detector tubes.

Badge Dosimeters, or just plain "badges," are typically worn by personnel at their workstations to measure the time weighted-average of exposure to toxins. Badges can be read by specially trained personnel or sent to a lab for reading.

Portable Electronic Measuring Instruments, or "sniffers," are generally used by confined space entry personnel to monitor oxygen levels, combustibles, and toxic materials. These instruments are limited by the sensor available.

Detector Tubes, or "pumps," are used in a wide variety of applications to measure the concentration of a known gas or vapor. The gas or vapor concentration can be determined immediately by the length-of-stain.