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D-Guard² Instruction Manual
15 Calibration
The D-Guard² is factory calibrated before dispatch. You must calibrate the D-Guard²
regularly. Calibration adjusts the response of the D-Guard² to known concentrations of
gas at two points, zero and span.
Zero calibration uses zero-grade air or fresh air, which does not contain any trace of
the detectors intended target gas. You can set the concentration of zero calibration
gas. See
section
18.4.
Span calibration uses a known concentration of the intended target gas. You can set
the concentration of span calibration gas. See
WARNING! Use the calibration plug for each calibration or bump test. Incorrect
calibration can result in injury or death to personnel.
15.1 Access the calibration menu
Make sure the menu system is unlocked. See
Put the service tool over the magnetic sensor location closest to the gas cylinder icon
for one second to access the calibration menu.
Step 1. Use
to enter the calibration menu.
Step 3. Calibration menu.
NOTE: If CANCEL was selected, the menu will auto lock after a ten second delay.
WARNING! Incorrect calibration can result in injury or death to personnel.
16
section
18.3.
section
14.3.
Step 2. Use
to continue or
to go back.
Item Number 201018
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