Chamber Drive Mechanisms

The drive mechanism controlling the opening and closing of the long-term chambers do not affect the measurements. The chambers lower slowly onto the measurement collar to minimize pressure pulsations that change soil CO₂ flux rates.

The 8100-104/104C has six settings for the chamber's open position. This gives researchers an advantage when placing the chamber under short plant canopies or other situations where these open positions may help to avoid terrain or other obstructions.