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Appendix C. CR3000 Program for Measuring Pt-100 Temperature Sensor

'CR3000 Series Datalogger

'CNR4 program

'This program measures CNR4 four-component net radiometer

'This program also measures the Pt-100 sensor 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 (thin 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 CNR4 PRT (Pt-100) signal (green)

'8L CNR4 PRT (Pt-100) signal reference (yellow)

'gnd CNR4 PRT (Pt-100) shield (clear)

'CURRENT EXCITATION

'IX1 CNR4 PRT (Pt-100) current excitation (grey)

'IXR CNR4 PRT (Pt-100) current excitation return (brown)

'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

C-2

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Campbell CVF4 Especificaciones Pagina 56