Leaf Porometer Operator’s Manual
4. Sensor Head Calibration
32
The kit contains:
• Calibration plate
• Tweezers
• Bottle of DI water
• Calibration filter paper disks
• Spacer pin
Procedure
1) Equilibrate to field conditions
It is critical that the porometer sensor head is in thermal
equilibrium with the environment where measurements will
be taken. If you bring the porometer from an air-condi-
tioned environment into hot field conditions, it can take 10
minutes or more for thermal equilibrium to be reached.
You can check for thermal equilibrium by putting the
porometer in "manual" mode and monitoring temperature
readings until they are steady.
2) Start Calibration
To start calibration, select the "Calibrate" option on the
Configuration/Calibration submenu.
