Environmental Sensors Co.'s Sulfur Dioxide Meter is a hand held instrument that measures sulfur dioxide concentration in a range of 0-20 ppm and a resolution of 0.1 ppm.
The instrument makes it possible to monitor sulfur dioxide vapor in air. The insturment has an LCD display giving concentrations in ppm, a low battery indicator, and an audible alarm that can be set at any level from 0-20 ppm.
With the touch of a button, the meter displays STEL (average of every 15 min.), TWA (8 hour average) and Peak.
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