If you press [N/-] to return to the main menu, which shows the tube type instead of the CF
(correction factor):
Press [N/-] to advance to this screen:
If you press [Y/+], you are asked, “Clear peak value! Are You Sure?” to confirm:
Press [Y/+] to clear the Peak value and exit to VOC operation.
If you press [N/-], this display is shown:
Remove the tube and put the inlet back together. Then press [N/-]. This display is shown:
Handheld PID Monitors 45 User Manual