Campbell CS110, Инструкция по эксплуатации, Страница: 30 / 86

CS110 Electric Field Meter
20
table. Data can be collected manually or automatically on a scheduled collection
interval by means of LoggerNet PC software.
The
Sample
output processing instruction simply outputs the current variable
value at the appropriate time to the data table. The
Average
and
StdDev
output
processing instructions accumulate all measured values over the associated data
interval and then compute the average and standard deviation, respectively, at the
appropriate time. Several other processing instructions exist for the CR1000 as
described in the CR1000 Measurement and Control System Operator’s Manual.
The
Scan
and
NextScan
instructions set up a loop based on the scan interval.
PanelTemp
,
VoltDiff
,
Battery
, and
CS110
are measurement instructions that
return the temperature inside the CS110 case, relative humidity inside the CS110
case, the voltage being provided to the CS110 to power the instrument and the
measured electric field, respectively. These and other measurement instructions
are discussed more fully in Section 7 on CS110 Measurement Instructions. The
CallTable
instruction sends data to the output processing instructions associated
with a given table.
A more involved program that incorporates site correction multiplier, rainfall,
wind speed and direction, solar radiation, relative humidity and air temperature,
along with electric field follows:
'CS110 efield and weather station program.(CS110_WStation.cr1).
'Measures rainfall, wind speed and direction, solar radiation,
'relative humidity and air temperature and electric field.
'Updated last by Jody Swenson on 11/15/05 for Error_Count.
const Mparallel_plate = 85
const C
site
= 0.10
const Mcorrected = Mparallel_plate*C
site
'Mcorrected is what goes into CS110 instruction.
Public E_field
Units E_field=volts/m
Public battery_volt
Public leakage_cur
Units leakage_cur=nA
Public status
Public panel_temp
Units panel_temp=DegC
Public rain_fall
Units rain_fall=inch
Public wind_speed
Units wind_speed=mph
Public wind_dir
Units wind_dir=deg
Public solar_rad
Units solar_rad=W/m2
Public air_temp
Units air_temp=DegF
Public RH
Units RH=%
Public internal_RH
Units internal_RH=%
Public E_status(16)
'E_field status array.
Public k
'Index for E_status array.
Public meas_error
'Disable variable for slow table.
Public Error_Count
'Keep track of total errors measurements.
DataTable(Tabslow,1,-1)
'-1 to auto-allocate all available memory.
DataInterval(0,60,sec,10)
'Averaged 60 second output data.