Set Span menu
WARNING:
!
alarms will be triggered. Either change alarm levels so the alarms are not
triggered or put the entire system in service mode so no external equipment
(lights, fans, ventilators, buzzers) are not activated.
!
Use the Set Span function only when inspection or calibration maintenance
indicates that it is necessary. Refer to
This option allows users to calibrate the sensor's span. In the main Set
Span screen, press enter to begin.
•
Before starting the calibration, connect the regulator to the gas
cylinder.
•
Adjust the flow rate to 0.5 L/min.
•
Connect the tubing from the regulator to the sensor calibration
cap See
•
Allow the gas to flow for at least 3 minutes before starting the
calibration.
!
If the gas is not allowed to flow for at least 3 minutes, it will affect the
calibration accuracy.
The Set Gas screen allows you to specify the span calibration gas
concentration value.
•
Use the arrow keys to increase or decrease the value and press
enter to select. The next screen requests confirmation.
Press enter to confirm, or use the arrow keys to scroll to No to
•
cancel. The screen displays the concentration during calibration.
A success or failure message displays and the screen returns to the
main menu option.
E
Point Network Gas Monitor User Manual
3
If the calibration gas concentration exceeds alarm setpoints,
Set Span
Figure 6. Calibration
Set Span
Set Span
Periodic Inspection and
* Menu *
Setup.
Set Gas
200 ppm
Yes
198 ppm
Maintenance.
27