E
3
Point Gas Monitor Technical Manual
21
Monitor Operation
Set Zero Menu
Only use the Set Zero function when the monitor no longer displays zero. See
Periodic Inspection and Maintenance.
This option allows users to set the sensor Zero. In the main Set Zero
screen, press enter to begin. If there is a remote sensor connected, on
the Standalone Mode, you must scroll to select Z1 (built-in sensor) or Z2
(remote sensor).
* Menu *
Set Zero
Set Zero
Z1
• Before starting the calibration, connect the regulator to the
appropriate cylinder (nitrogen for all sensors except combustible,
which uses air).
• Adjust the flow rate to the indicated rate.
• Connect the tubing from the regulator to the sensor calibration
cap as shown in Figure 4.
• Let the gas flow for at least 2 minutes before starting calibration.
• The next screen requests confirmation. Use the arrow keys to
display Yes and press enter to confirm.
Set Zero
Yes
A confirmation screen briefly displays and the zero calibration begins.
A success or failure message displays and the screen returns to the main
menu option.
Figure 4. Calibration Installation
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