Campbell Scientific CNR4 Net Radiometer - Manual (Page 33)

CNR4 Net Radiometer
'CR3000 Series Datalogger
'
'CNR4 program
'This program measures CNR4 four-component net radiometer
'This program also measures the thermistor inside the CNR4
'
'User must enter the sensitivity values for all four probes in the program and save/compile
'prior to downloading it to the datalogger.
'Search for the text string "unique" to find places to enter the sensitivity values.
'
'Wiring Instructions
'
'ANALOG CHANNELS
'1H CNR4 Pyranometer Upper signal (red)
'1L CNR4 Pyranometer Upper signal reference (blue)
'gnd jumper to 1L
'
'2H CNR4 Pyranometer Lower signal (white)
'2L CNR4 Pyranometer Lower signal reference (black)
'gnd jumnper to 2L
'
'3H CNR4 Pyrgeometer Upper signal (grey)
'3L CNR4 Pyrgeometer Upper signal reference (yellow)
'gnd jumper to 3L
'
'4H CNR4 Pyrgeometer Lower signal (brown)
'4L CNR4 Pyrgeometer Lower signal reference (green)
'gnd jumper to 4L
' CNR4 shield (clear)
'
'
'8H
'8L CNR4 thermistor signal (white)
'gnd CNR4 thermistor signal reference (black)
' CNR4 thermistor shield (clear)
'
'VOLTAGE EXCITATION
'
'VX1 CNR4 thermistor voltage excitation (red)
'
'CNR4 sensor
Public logger_temp, batt_volt
Public cnr4(4)
Alias cnr4(1) = short_up
Alias cnr4(2) = short_dn
Alias cnr4(3) = long_up
Alias cnr4(4) = lo g_dn
n
Public cnr4_T_C
'CNR ius 4 thermistor temperature in Celc
Public cnr4_T_K 'CNR4 thermistor temperature in Kelvin
Public long_up_cor 'Dow re correction r nwelling long-wave radiation with temperatu
Public long_dn_cor 'Upw ection r elling long-wave radiation with temperature corr
Public Rs_net 'short-wave net radiation
Public Rl_net 'long-wave net radiation
Public albedo 'Albedo
Public Rn 'total net radiation
Units logger_temp degC
=
Units batt_volt = olts v
Units short_up = W m^2 /
Units short_dn = W m^2 /
Units long_up = W/m^2
Units long_dn = W/m^2
Units cnr4_T_C = deg_C
Units cnr4_T_K = K
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