Campbell CPEC300, Руководство по эксплуатации продукта

Страница: 91 / 175

CPEC300/306/310 Closed-Path Eddy-Covariance Systems
82
TABLE 7-1. Variables Found in Menus for Zero and Span
Variable Name Default Description
Name of variable in
Public Table (when no
CR1000KD available)
Scrb Tmpr -
This is a read-only variable
showing the temperature in °C of
the scrub module. This variable
is ommitted if the system does
not have a scrub module.
scrub_tmpr
Val T Ctl On
(If scrub module
included, variable
name is
V/S T Ctl On)
FALSE
Set this variable to TRUE to
enable temperature control
(heaters and fans) of the valve
module (and scrub module if
applicable). Following an auto
zero/span, this variable may be
set back to FALSE to conserve
power.
valve_tmpr_ctrl_flg
CO2 Span Gas 400
The dry molar mixing ratio of the
CO
2
span gas in µmol·mol -1 .
CO2_span_gas
H2O Span TDP 10
The dewpoint temperature
setting on the H
2
O span gas
source in °C.
Td_span_gas
H2O Span Gas -
This is a read-only variable
showing the calculated dry molar
mixing ratio of the H
2
O span gas
in mmol·mol -1 . The air pressure
difference between ambient and
the dew point generator is taken
into account when calculating.
H2O_span_gas
Pick AUTO_ZS
Pick ZRO_ALL
Pick SPN_CO2
Pick SPN_H2O
FLD_MEA
This variable indicates the
current sampling mode.
Depending on which keypad
menu is viewed, this variable
will be named to indicate which
value to choose. For example,
under the Prfrm AUTO_ZS
cycle
menu, the value of
Pick
AUTO_ZS
should be changed
from field measurements mode
( FLD_MEA ) to AUTO_ZS to
initiate the auto zero/span cycle.
mode
Options:
1 = FLD_MEA
3 = ZRO_ALL
4 = SPN_CO2
5 = SPN_H2O
7 = AUTO_ZS
Site -
This is a read-only variable
showing the current sampling
site. Monitor this variable to see
progress of zero/span. See
Appendix B for more details on
sampling sites.
site_
Options: fld smp, offst
P, chk CO2, chk zro, set
zro, set CO2, chk H2O,
set H2O, equilib,
irg_off