METER SC-1 User Manual

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SC-1
Figure51 Sensor head on calibration plate
20. Orient the sensor head with the desiccant cap facing downward. The sensor can be held
in this orientation by hand, or the entire sensor head and calibration plate assembly can
be set on top of the SC-1 controller with the desiccant cap hanging off the edge.
Proper orientation ensures the agitation bead sits on the Teflon filter and does not
interfere with the water vapor diffusion from the leaf to the two sensors.
NOTE: The sensor head must remain still during the calibration. The stomatal conductance measurement
relies on water vapor transfer from purely molecular diffusion and any air mixing from movement will cause a
substantial loss of accuracy.
The SC-1 will automatically begin the first reading (Figure52).
Figure52 Calibrating screen during calibration
Each calibration measurement will take 30 s. The progress bar at the bottom of the
screen and the timer at the top right of the screen indicate the status of the calibration
measurement.
Once a reading is complete, a prompt to equilibrate sensors will appear (Figure53).

METER SC-1 Specifications

General

Brand	METER
Model	SC-1
Category	Measuring Instruments
Language	English