Campbell CNR1 Specifiche

CNR1 Net RadiometerRevision: 5/11Copyright © 2000-2011Campbell Scientific, Inc.

CNR1 Net Radiometer 4.2 Measuring Far Infrared Radiation with the CG3 The downward-facing CG3 measures the Far Infrared radiation that is emitted by

CNR1 Net Radiometer 4.4 Calculation of the Albedo for Solar Radiation The albedo is the ratio of incoming and reflected Solar radiation. It is a fig

CNR1 Net Radiometer As a rule of thumb, for ambient temperatures of about 20 degrees Celsius, one can say that one degree of temperature difference be

CNR1 Net Radiometer FIGURE 5-1. CNR1 Schematic EX14WPB100RedCNR1DATALOGGERYellowGreenPT-100BlueHLG10K5H5L6H6L100 FIGURE 5-2. Interfacing the Pt-100

CNR1 Net Radiometer The four radiation outputs can be measured using Differential or Single-Ended inputs on the datalogger. A differential voltage me

CNR1 Net Radiometer TABLE 5-3. CR3000 and CR5000 Connections for Differential Measurement Function Color CR3000/CR5000 CM3 Up Signal Red Differe

CNR1 Net Radiometer FIGURE 6-1. 4WPB100 Module 6.1 Calibration Factor Each CNR1 is provided with a ‘Certificate of Calibration’ by the manufacturer

CNR1 Net Radiometer 'CR1000 'Declare Variables and Units Public Batt_Volt Public CM3Up Public CM3Dn Public CG3Up Public CG3Dn Public CNR1TC

CNR1 Net Radiometer 'Main Program BeginProg Scan(2,Sec,1,0) 'Default Datalogger Battery Voltage measurement Batt_Volt: Battery(Batt_V

CNR1 Net Radiometer 'CR5000 Series Datalogger 'ANALOG INPUT '1H CM3 UP - downwelling shortwave radiation signal (red) '1L CM

Warranty and Assistance PRODUCTS MANUFACTURED BY CAMPBELL SCIENTIFIC, INC. are warranted by Campbell Scientific, Inc. (“Campbell”) to be free from def

CNR1 Net Radiometer 'Define Data Tables DataTable(Table1,True,-1) DataInterval(0,60,Min,10) Average(1,CM3Up,FP2,False) Average(1,CM3Dn,FP2,Fal

CNR1 Net Radiometer 6.2.3 Example 3, CR23X Program Using Differential Channels Program Example 3 requires six differential channels and the 4WPB100 m

CNR1 Net Radiometer ;{CR23X} ;Program Example 1 for CR23X datalogger ; ;CNR1 sensitivity for program example = 7.30 uV/W/m^2 ;Multiplier for measurem

CNR1 Net Radiometer ;Net CM3 shortwave radiation = CM3 Up - CM3 Down 6: Z=X-Y (P35) 1: 1 X Loc [ CM3_up ] 2: 2 Y Loc [ CM3_dn ]

CNR1 Net Radiometer 15: Z=X*Y (P36) 1: 25 X Loc [ scratch_1 ] 2: 27 Y Loc [ scratch_3 ] 3: 28 Z Loc [ scratch_4 ] 16: Z=X+Y (P33

CNR1 Net Radiometer Wiring for Program Example 4 Color Function Example CR23X Program Channels Used Red CM3 Up Signal SE1 Blue CM3 Up Reference W

CNR1 Net Radiometer ;Measure CNR1 temperature 3: Full Bridge w/mv Excit (P9) 1: 1 Reps 2: 22 50 mV, 60 Hz Reject, Slow, Ex Range 3: 22

CNR1 Net Radiometer 8. Troubleshooting If there is no clue as to what may be the problem, start performing the following "upside-down test"

CNR1 Net Radiometer 24 8.2 Testing of the CG3 It is assumed that the amplifier circuit is the same as the one used for the CM3, and that its zero off

Appendix A. CNR1 Performance and Measurements under Different Conditions Below, Table A-1, shows an indication of what one might typically expect to

CNR1 Table of Contents PDF viewers note: These page numbers refer to the printed version of this document. Use the Adobe Acrobat® bookmarks tab for

Appendix A. CNR1 Performance and Measurements under Different Conditions A-2 TABLE A-1. Typical output signals of CNR1 under different meteorologica

Appendix B. Details about Using the Heater Whenever the heater is used, the heating may cause errors in the measurement of the sensor temperature, se

Appendix B. Details about Using the Heater For decisions about heating one can make the following diagram: 12 VDC, 6 VA available? Not available DO N

Appendix C. CR3000/CR5000 Program that Controls the Heater This program applies power to the CNR1 heater using the SW12V relay controller and the pul

Appendix C. CR3000/CR5000 Program that Controls the Heater '14H CNR1 upwelling longwave radiation signal (purple or pink) '14L CNR1 upwe

Appendix C. CR3000/CR5000 Program that Controls the Heater Alias nr01(3) = Rs_downwell Alias nr01(4) = Rs_upwell Alias nr01(5) = Rl_downwell Alias nr

Appendix C. CR3000/CR5000 Program that Controls the Heater BeginProg Scan (1,Sec,0,0) 'Control the net radiometer heater. PWM (duty_cycle

Appendix C. CR3000/CR5000 Program that Controls the Heater Case Else duty_cycle = 0.01 EndSelect Else duty_cycle = 0.01 EndIf

Appendix C. CR3000/CR5000 Program that Controls the Heater C-6

CNR1 Table of Contents ii A. CNR1 Performance and Measurements under Different Conditions ... A-1 B. Using t

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CNR1 Net Radiometer 1. General Description The CNR1 Net Radiometer is intended for the analysis of the radiation balance of Solar and Far Infrared ra

CNR1 Net Radiometer Cable length: 15 m (each cable) Weight: 4 kg Mounting arm attached to CNR1: 14.5” (37 cm) long 5/8” (1.6 cm) diameter FIGURE 2-

CNR1 Net Radiometer Tilt response: Max. dev. 2% Overall ISO classification: second class Sensitivity: 10 - 35 µV/(W m-2) Impedance: 125 Ohm nominal Op

CNR1 Net Radiometer Northern Hemisphere this implies that the Net Radiometer should be mounted south of the mast. It is suggested that the CNR1 is mou

CNR1 Net Radiometer 3.1 Connecting and Using the Heater Only use the sensor’s heater when there is risk of dew forming on the sensors, especially for