Campbell CPEC300, Руководство по эксплуатации продукта

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CPEC300/306/310 Closed-Path Eddy-Covariance Systems
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TABLE 6-1. Program Constants
Indented constant names indicate they are only applicable if the prior non-indented constant is true/applicable.
Constant Name Default Value Description
SCN_INTV 100
Measurement rate in milliseconds. Valid options: 50 (20 Hz), 100
(10 Hz), 200 (5 Hz), or 1000 (1 Hz)
SLW_SCN_INTV 5000 Slow sequence measurement rate in milliseconds
OUTPUT_INTV 30 Interval in minutes over which to compute statistics and fluxes
DAY_FLUX_CRD 30
Number of days of data to write to each flux data output file stored
on the card before beginning a new file
DAY_TSRS_CRD 1
The number of days of data to write to each time series output files
stored on the card before beginning a new file.
NTCH_FRQ_SLW 60
Analog integration parameter for measurements in the slow
sequence. Options: 60 (filters 60 Hz noise), 50 (filters 50 Hz
noise). Choose the option that matches the AC power Hz at site.
ONE_FL_TABLE – 1
Set to – 1 (TRUE) to combine the Flux_CSIFormat and anciliary
Flux_Notes
tables into one full or large table. Set to 0 (FALSE) to
keep the two tables separate.
DVC_CDM_A116 – 1
Set to – 1 (TRUE) for the CPEC306 or CPEC310 if they include a
CDM-A116 device. Set to 0 (FALSE) for the CPEC300.
CDM_SN 0000 The serial number of the CDM-A116
CPI_ADDR_CDM 1 The CPI address of the CDM-A116
CPI_DEVICE “CDMA116” A custom name the user can give the CDM-A116. It must be in
quotation marks.
SDM_CLCK_SPD 30
SDM clock bit period in µs. If long cables are used that result in
skipped scans, this value should be increased. In most cases, the
default is adequate.
EC100SDM_ADR 1 The SDM address of the EC100.
BANDWIDTH 5
The bandwidth for measurements from the EC100. For spectral
analysis, set to one half the sampling frequency; otherwise, leave
at default. Options: 5, 10, 12.5, or 20 Hz.
CEL_PRSS_TYP
1
Set to 1 to indicate an absolute pressure sensor in the sample cell.
CPEC310 – 1
Set to -1 (TRUE) for CPEC310 to indicate the system has a valve
module for automatic zero and span. Set to 0 (FALSE) for
CPEC300 or CPEC306.
ZRO_SPN_INTV 1 Number of days between each automatic zero and span.
ZRO_SPN_OFST 0
Number of minutes to offset the automatic zero/span. For example,
if ZRO_SPN_INTV is 1, and ZRO_SPN_OFST is 60, then the
auto zero/span will occur at 1:00AM each day.
TIME_ZRO_SPN 60
Number of seconds on each site or stage of the automatic zero and
span. Allow enough time for equilibration. For tall tower
applications that have a large distance between CPEC310 system
enclosure and the EC155 gas analyzer, this may need to be
increased.
CHECK_ZRO – 1
Set to – 1 (TRUE) to measure and record the gas readings while
zero gas is flowing but before the analyzer is zeroed. Set to 0
(FALSE) to not measure and record.