Campbell Scientific CPEC200 Closed-Path Eddy-Covariance System - Manual (Page 87)

Appendix C. Output Variables
TABLE C-5. Values stored in table config_history
Variable Name Units Description
CO2_SPAN_PPM µmol∙mol -1 CO
2
mixing ratio in the CO
2
span cylinder
USE_DIFF_PRESS Set = True to enable the EC155 differential pressure sensor
CHECK_ZERO Set = True to enable automatic zero/span sequences
SET_ZERO Set = True to set the zero during automatic zero/span sequences
CHECK_SPAN1 Set = True to check the CO
2
span during automatic zero/span
sequences
SET_SPAN_1 Set = True to set the CO
2
span during automatic zero/span
sequences
CHECK_SPAN2 Set = True to measure CO
2
span cylinder 2 during automatic
zero/span sequences
CHECK_SPAN3 Set = True to measure CO
2
span cylinder 3 during automatic
zero/span sequences
CHECK_SPAN4 Set = True to measure CO
2
span cylinder 4 during automatic
zero/span sequences
VALVE_MODULE Compile switch: set = True to enable the use of the valve module
SCRUB_MODULE Compile switch: set = True to enable the use of the scrub module
SaveAll_diagnostics Compile switch: set = True to save additional diagnostic values in
the time series data table
Leaf_Wetness_Sensor Compile switch: set = True to control intake heater voltage based
on a leaf wetness sensor
C-11