TESTO 300 - CO;NO Sensor Protect; NO2 Addition; O 2 Reference

13 Using the product
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13.2.6.9 CO/NO sensor protect
Limit values can be set to protect the CO/NO sensors against overload. Sensor
protect is enabled if these are exceeded:
• Fresh air dilution if exceeded (only for instruments with the "Dilution" option)
• Shutdown if exceeded again
When dilution is enabled, the CO and CO undiluted values are
displayed in a blue font. A “*” is shown on the printout after the name of
both values to indicate dilution.
1
Call up function: | Device Settings | Sensor Protect

CO input screen: Set Sensor Setting is opened.
2
Enter the alarm limit value via the keypad.
3
Confirm input with .
The limit values must be set to 0 ppm to disable sensor protect.
13.2.6.10 NO2 addition
1
Call up function: | Device Settings | NO2 addition
2
Enter the addition value using the keyboard.
3
Confirm the input with OK.
4
Back to the Device Settings menu: tap .
13.2.6.11 O
2
reference
The O2 reference value of the current fuel can be set.
1
Call up function: | Device settings | O2 reference

O
2
reference current fuel input screen is opened.
2
Enter the value via the keypad.
3
Confirm input with .