Campbell-scientific AP200 CO2/H2O Atmospheric Profile System Manual de usuario Pagina 79

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Appendix C. Public Variables
TABLE C-1. Public Variables
Usage Variable Name Units Description
TAIR T_air(5) °C
air temperature profile (optional, defined only if
N_AirTemps > 4)
TAIR T_air(6) °C
air temperature profile (optional, defined only if
N_AirTemps > 5)
TAIR T_air(7) °C
air temperature profile (optional, defined only if
N_AirTemps > 6)
TAIR T_air(8) °C
air temperature profile (optional, defined only if
N_AirTemps > 7)
USER H2OSpanDewPt °C
setpoint temperature on dewpoint generator; used for H
2
O
span
USER SETpressAmbient
set = to True for AP200 to store the value of cell_press in
PressAmbient
USER SETspanCellP
Set = True for AP200 to store the value of cell_press in
SpanCellP
USER SpanCellP kPa sample cell operating pressure; used for H
2
O span
INFO/USER DO_zero
set = to True for AP200 to send CO
2
& H
2
O zero
commands to the IRGA
INFO/USER DO_CO2_span
set = to True for AP200 to send CO
2
span command to the
IRGA
INFO/USER DO_H2O_span
Set = True for AP200 to send H
2
O span command to the
IRGA
CONFIG PRESS_AMBIENT kPa
ambient pressure; used to calculate Td_ambient and for
H
2
O span
CONFIG PUMP_P_SETPT kPa setpoint pressure for the pump speed control
CONFIG LEVELS_USED number of profile levels to be used
CONFIG MEASURE_TANKS
set = to True to automatically measure zero and span
cylinders
CONFIG AUTO_ZEROSPAN
set = to True to zero and span the IRGA when cylinders
are measured
CONFIG CAL_INTERVAL min time between automatic zero/span sequences
CONFIG CAL_TIMEOFFSET min time offset for starting automatic zero/span sequences
CONFIG CO2_SPAN_PPM ppm CO
2
concentration in the CO
2
span cylinder
CONFIG BATT_LOWLIMIT V
AP200 will shut down if supply voltage falls below this
limit
CONFIG BATT_DEADBAND V
AP200 will power up if supply voltage rises this much
above lower limit
C-3
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