Campbell CNR4 Manuál s instrukcemi stáhnout pdf (Strana 42)

Appendix B. Example Programs

B.2 CR3000 Program Using Differential

Measurements

This example requires four differential channels to measure the four radiation

outputs and one excitation channel and one single-ended channel to measure

the thermistor. The program measures the sensors every 1 second, performs

the online processing of the data and stores the following processed data to a

data table called cnr4_data once every 60 minutes. It also stores the raw time-

series data from CNR4 to data table called cnr4_ts.

Minimum battery voltage

Sample datalogger panel temperature

Average short-wave radiation (pyranometer up)

Average short-wave radiation (pyranometer down)

Average long-wave radiation (pyrgeometer up)

Average long-wave radiation (pyrgeometer down)

Average CNR4 thermistor temperature (degrees C)

Average CNR4 thermistor temperature (Kelvin)

Average corrected long-wave radiation (pyrgeometer up)

Average corrected long-wave radiation (pyrgeometer down)

Average short-wave net radiation

Average long-wave net radiation

Average albedo

Average net radiation

'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)

B-4

1 2 ... 37 38 39 40 41 42 43 44 45 46 47 ... 69 70

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