D-Guard² Instruction Manual
Item Number 201018
21
15.7 Manual Zero Calibration
Step 2
. Apply the correct gas. Use to adjust.
Step 3
. Use to adjust or to save.
WARNING! Incorrect calibration can result in injury or death to personnel.
Step 4
. Use to exit or to continue.
Step 1
. Use to go into manual zero mode.
Step 5
. Use to exit or to cancel.
Step 6
. Calibration completed.
NOTE: The D-Guard² Trend Bar is used to determine when the rate of change of the applied
gas has decreased to less than
± 0.1% of full scale per second.
NOTE: Fresh air can be used in place of zero-grade air.
Access the calibration menu. See
.
