Where and how to hang the sensor to get proper measurements?
Choose a location that represents your crop. That means somewhere where the height is average, the canopy is closed and not close to an air intake, heater or too close to a humidifier.
Always make sure to use enough circulation to ensure representable data. On the homepage you can find a document called “connecting the dots” In there you can find reading material about circulation and how it influences VPD.
Last but not least, make sure it doesn’t get wet! The PCB inside the sensor module is not water resistant! So if you have to spray your crops for whatever reason, cover the sensor module or replace it temporarily….