When Span calibration is complete, you will see a message similar to this (the value shown here
is for example only):
Span 2 is done!
Reading = 1000 ppm
The instrument then exits Span calibration and shows the Zero calibration menu on its display.
Note: The reading should be very close to the span gas value.
Exiting three-point calibration
When you are done performing calibrations, press [MODE], which corresponds with "Back" on
the display. You will see the following message:
Updating settings...
The instrument updates its settings and then returns to the main display. It begins or resumes
monitoring.
Handheld PID Monitors
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User Manual