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5) Attach the calibration gas to the Static sample port located on the front of the Envision®
gas analyzer and open the regulator valve. Elkins Earthworks® strongly recommends the
use of a Demand Flow regulator. Warning – If using a tunable regulator, use a setting of
.5 LPM and attach the calibration gas only to the Static port. Do not attach the calibration
gas to the Exhaust, Impact or Available ports. Pressures above 200” H20 on any port may
result in a damaged pressure sensor.
6) Tap the “Start Calibration” button. This action will turn on the sample pump and will
change the display. The “Calibration Value” located in the middle of the touch screen
should be the same as the gas quality that is being used for calibration and will not
fluctuate.
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