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CNR4 Net Radiometer

'CR5000 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) = long_dn

Public cnr4_T_C 'CNR4 thermistor temperature in Celcius

Public cnr4_T_K 'CNR4 thermistor temperature in Kelvin

Public long_up_corr 'Downwelling long-wave radiation with temperature correction

Public long_dn_corr 'Upwelling long-wave radiation with temperature correction

Public Rs_net 'short-wave net radiation

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Campbell CVF4 Especificaciones Pagina 31