Campbell Scientific CPEC200 Closed-Path Eddy-Covariance System - Manual (Page 42)

CPEC200 Closed-Path Eddy-Covariance System
CHECK_SPAN2:
Check the gas analyzer span against CO
2
gas number 2 (requires the 6-valve
module).
CHECK_SPAN3:
Check the gas analyzer span against CO
2
gas number 3 (requires the 6-valve
module).
CHECK_SPAN4:
Check the gas analyzer span against CO
2
gas number 4 (requires the 6-valve
module).
5.4.2 Compile Switches
The CPEC200 program defines four constants that are used as compile
switches. The function of these constants are defined below.
VALVE_MODULE:
Set VALVE_MODULE = True to enable the use of the optional valve
module. Set it to False if no valve module is installed, or if the valve module is
not being used. Disabling the valve module by setting it to FALSE will reduce
clutter in the output tables and save processing time. No distinction is made
between the 3-valve module or the 6-valve module. Either one is enabled by
setting VALVE_MODULE = True.
SCRUB_MODULE:
Set SCRUB_MODULE = True to enable the use of the scrub module
accessory. Set SCRUB_MODULE = False if no scrub module is installed.
Setting SCRUB_MODULE = True when using a cylinder of
compressed zero air instead of a scrub module may cause the
contents of the zero air cylinder to be quickly exhausted.
Use of the scrub module requires the use of the valve module. If
VALVE_MODULE = False, then SCRUB_MODULE will be
ignored.
SaveAll_diagnostics:
If constant SaveAll_diagnostics = False (the default), the ts_data output table
will contain only those values required for normal operation. If
SaveAll_diagnostics = True, the CPEC200 will save some additional
diagnostic values in output table ts_data.
Leaf_Wetness_Sensor:
If an optional leaf wetness sensor is installed, set Leaf_Wetness_Sensor =
True to reduce power to the EC155 intake heater during dry weather. If
Leaf_Wetness_Sensor = False, the EC155 intake heater will be set to full
power (0.7 W) all the time.
5.5 Verify Proper Operation
Verify proper operation of the CPEC200 system by checking the following
public variables.
NOTE
32