Campbell Scientific CNR4 Net Radiometer - Manual (Page 59)

Appe gram for
Measuring Pt-100 Temperature Sensor
ndix C. CR3000 Pro
Example C measures the Pt-100 senso te perature of the C R4.
gram requ s four different measure the four radi ion
ts, one current excitation channel, and one differential channel for Pt-100
measurement. The program measures the sensors every 1 second, performs the
online processing of the data, and stores the following processed data to a data
nr4_data once every 60 minutes. It also stores the raw time-series
ata from CNR4 to data table called cnr4_ts.
e short-wave radiation (pyranometer down)
e long-wave radiation (pyrgeometer up)
Average short-wave net radiation
g-wave net radiation
do
TABLE C-1. Datal
r for the body m N
ire ial channels to at This pro
outpu
table called c
d
Minimum battery voltage
Sample datalogger panel temperature
Average short-wave radiation (pyranometer up)
Averag
Averag
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 lon
Average albe
Average net radiation
ogger Connections for Differential Measurement with Pt-100
Function Wire Color CR3000/CR5000
Pyranometer Up Signal Red Differential Input (H)
Pyranometer Up Reference *Blue Differential Input (L)
Pyranometer Down Signal White Differential Input (H)
Pyranometer Down Refere *Black Differential Input (L) nce
Pyrgeometer Up Signal Grey Differential Input (H)
Pyrgeom ter Up Reference *Yellow D e ifferential Input (L)
Pyrgeom ter Down Signal Brown D e ifferential Input (H)
Pyrgeometer Down Reference *Green Differential Input (L)
Shield Clear
PRT (Pt-100) Current Excitation Grey Current Excitation (IX)
PRT (Pt-100) Current Return Brown Current Excitation Return (IXR)
PRT (Pt-100) Signal Green Differential Input (H)
PRT (Pt-100) Signal Reference Yellow Differential Input (L)
Shield Clear
*Pull back wires for thermistor (white, red, and black), which are not in use, and tie them around the TEMP cable
using a cable tie or electrical tape t
oid possible damage to the thermistor, due to electrical short circuit. o av
C-1