Campbell CVF4 Spécifications télécharger pdf (Page 30)

CNR4 Net Radiometer

'Compute short-wave net radiation

Rs_net = short_up - short_dn

'Compute long-wave net radiation

Rl_net = long_up - long_dn

'Compute albedo

albedo = short_dn/short_up

'Compute net radiation

Rn = Rs_net + Rl_net

CallTable cnr4_data

CallTable cnr4_ts

NextScan

EndProg

7.2.3 Example 3, CR5000 Program Using Differential Measurements

The Program Example 3 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 on-line 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.

The variables for the CR5000 datalogger can be up to 16

characters in length. However, if the variable is processed in the

output table by an output type other than Sample, the name will

be truncated in the datalogger to 12 characters, plus an

underscore and a 3 digit suffix indicating the output type (e.g.

_avg, _max).

NOTE

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

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 59 60

Pas de commentaire

Campbell CVF4 Spécifications Page 30