Specifications

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3) If the user types in a span gas value, he must first type in the desired gas quality then tap the “User Defined”
button. Once the user taps “User Defined” or either one of the two predetermined gas qualities, the screen will
then change to the “Calibration … Span” screen.
4) The user now has the ability to scan the barcode on the calibration cylinder. Tap the “Scan Barcode” button and
aim the scanner laser at the barcode on the calibration gas cylinder being utilized. The label number will
automatically populate the “Calibration Gas Cylinder #” text box. The user can manually type in the bottle lot#
using the numeric keypad on the Trimble or the user may proceed without entering cylinder #. This data will be
recorded in the calibration .csv file that is stored at the end of the calibration process.
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 –
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 other than the static pressure port may result in a
damaged pressure sensor.