Campbell Scientific LI200X LI200X-L LI-COR Silicon Pyranometer
Campbell Scientific LI200X Manual
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- Campbell Scientific LI200X | LI200X-L LI-COR Silicon Pyranometer - Page 1
LI200X Pyranometer Revision: 6/10 LP R I COR YR PY A N 2 O 0 M 0 E 2 T 3 E Copyright © 1994-2010 Campbell Scientific, Inc. - Campbell Scientific LI200X | LI200X-L LI-COR Silicon Pyranometer - Page 2
Assistance The LI200X PYRANOMETER is warranted by Campbell Scientific, Inc. to be free from defects in materials and workmanship under normal use and service for twelve (12) months from date of shipment unless specified otherwise. Batteries have no warranty. Campbell Scientific, Inc.'s obligation - Campbell Scientific LI200X | LI200X-L LI-COR Silicon Pyranometer - Page 3
9 6. Calibration 10 7. Troubleshooting 10 Appendix A. LI200S Pyranometer A-1 A.1 LI200S Pyranometer A-1 A.1.1 Wiring A-1 A.2 Unmodified Pyranometers A-1 A.2.1 Wiring A-1 A.3 Input Range A-2 A.4 Multiplier A-2 Figures 1-1. LI200X Pyranometer 2 2-1. CM225 Pyranometer Mounting Stand and CM202 - Campbell Scientific LI200X | LI200X-L LI-COR Silicon Pyranometer - Page 4
to Campbell Scientific Dataloggers 4 4-1. Multipliers Required for Average Flux and Total Flux Density in Sl and English Units 6 4-2. Wiring for Example Programs 6 A.4-1. Multipliers Required for Average Flux and Total Flux Density for SI and English Units for a LI200S Pyranometer ...... A-2 ii - Campbell Scientific LI200X | LI200X-L LI-COR Silicon Pyranometer - Page 5
; a shunt resistor in the sensor cable converts the signal from current to voltage, allowing the LI200X to be measured directly by Campbell Scientific dataloggers. The LI200X is calibrated against an Eppley Precision Spectral Pyranometer to accurately measure sun plus sky radiation. Do not use the - Campbell Scientific LI200X | LI200X-L LI-COR Silicon Pyranometer - Page 6
will support combustion in air. It is rated as slow burning when tested according to U.L. 94 H.B. and will pass FMVSS302. Local fire codes may preclude its use inside buildings. LP R I COR YR PY A N 2 O 0 M 0 E 2 T 3 E FIGURE 1-1. LI200X Pyranometer 2. Installation The LI200X should - Campbell Scientific LI200X | LI200X-L LI-COR Silicon Pyranometer - Page 7
LI200X Pyranometer NOTE Remove the red cap after installing the sensor. Save this cap for shipping or storing the sensor. LI200X Pyranometer LI2003S CM225 Stand CM200 Series Crossarm FIGURE 2-1. CM225 Pyranometer Mounting Stand and CM202 Crossarm FIGURE 2-2. 015 Pyranometer Mounting Arm 3 - Campbell Scientific LI200X | LI200X-L LI-COR Silicon Pyranometer - Page 8
LI200X Pyranometer 3. Wiring FIGURE 2-3. 025 Crossarm Stand and 019ALU Crossarm A schematic diagram of the LI200X is shown in Figure 3-1. Connections to Campbell Scientific dataloggers are given in Table 3-1. When Short Cut software is used to create the datalogger program, the sensor should be - Campbell Scientific LI200X | LI200X-L LI-COR Silicon Pyranometer - Page 9
LI200X Pyranometer RED H 40.2 to 90.2 Ω BLACK L WHITE AG OR GND CLEAR GND FIGURE 3-1. LI200X Schematic NOTE If a 21X is used to measure the LI200X and powers a 12 VDC sensor, the current drawn by the 12 VDC sensor may cause a difference in ground potential between the 21X ground terminals and - Campbell Scientific LI200X | LI200X-L LI-COR Silicon Pyranometer - Page 10
LI200X Pyranometer TABLE 4-1. Multipliers Required for Average Flux and Total Flux Density in Sl Total t = datalogger execution interval in seconds 4.1 Example Programs The following programs measure the LI200X every 10 seconds, and convert the mV output to Wm-2 and MJm-2. Both programs output - Campbell Scientific LI200X | LI200X-L LI-COR Silicon Pyranometer - Page 11
LI200X Pyranometer 'Define Data Tables DataTable(Table1,True,-1) DataInterval(0,60,Min,10) Average(1,SlrW,FP2,False) EndTable DataTable(Table2,True,-1) DataInterval(0,1440,Min,10) Totalize(1,SlrMJ,IEEE4,False) EndTable 'Main Program BeginProg Scan(10,Sec,1,0) 'measure the LI200X VoltDiff(SlrW,1, - Campbell Scientific LI200X | LI200X-L LI-COR Silicon Pyranometer - Page 12
LI200X Pyranometer ; set negative values to zero 2: If (XF) (P89) 1: 3 X Loc [ SlrW ] 2: 4 < 3: 0 F 4: 30 Then Do 3: Z=F x 10^n (P30) 1: 0 F 2: 0 n, Exponent of 10 3: 3 Z Loc [ SlrW ] 4: End (P95) ; convert mV to MJ/ - Campbell Scientific LI200X | LI200X-L LI-COR Silicon Pyranometer - Page 13
4 Loc [ SlrMJ ] 16: Resolution (P78) 1: 0 Low Resolution LI200X Pyranometer 4.2 Total Solar Radiation If the solar radiation is totalized in units of kJ record total flux using the high resolution format (Instruction 78, see Datalogger manuals for details). The disadvantage of the high - Campbell Scientific LI200X | LI200X-L LI-COR Silicon Pyranometer - Page 14
careful not to scratch the surface of the sensor. Recalibrate the LI200X every two years. Obtain an RMA number before returning the LI200X to Campbell Scientific, Inc. for recalibration. 6. Calibration LI200X pyranometers output a current that is proportional to the incoming solar radiation. Each - Campbell Scientific LI200X | LI200X-L LI-COR Silicon Pyranometer - Page 15
also connected to ground (G). The measurement is then made with Instruction 2 (see Section 4). A.2 Unmodified Pyranometers Pyranometers that do not have variable or fixed shunt resistors built into the cable can still be measured by Campbell Scientific dataloggers. This is done by wiring in a 100 - Campbell Scientific LI200X | LI200X-L LI-COR Silicon Pyranometer - Page 16
irradiance. This is an example only. Your values will be different. This example uses the calibration provided by LI-COR, Inc. Assume that the sensor calibration is 87 µA kW-1 m2. The pyranometer outputs current which is converted to voltage by the 100 Ω shunt resistor in the cable or on the wiring - Campbell Scientific LI200X | LI200X-L LI-COR Silicon Pyranometer - Page 17
- Campbell Scientific LI200X | LI200X-L LI-COR Silicon Pyranometer - Page 18
Centro Caribe S.A. (CSCC) 300 N Cementerio, Edificio Breller Santo Domingo, Heredia 40305 COSTA RICA www.campbellsci.cc • [email protected] Campbell Scientific Ltd. (CSL) Campbell Park 80 Hathern Road Shepshed, Loughborough LE12 9GX UNITED KINGDOM www.campbellsci.co.uk • [email protected]
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LI200X Pyranometer
Revision: 6/10
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Copyright © 1994-2010
Campbell Scientific, Inc.