Related Manuals for Campbell LI200R
Summary of Contents for Campbell LI200R
- Page 1 LI200R Pyranometer 6/16 C o p y r i g h t © 1 9 9 4 - 2 0 1 6 C a m p b e l l S c i e n t i f i c ,...
- Page 3 Limited Warranty “Products manufactured by CSI are warranted by CSI to be free from defects in materials and workmanship under normal use and service for twelve months from the date of shipment unless otherwise specified in the corresponding product manual. (Product manuals are available for review online at www.campbellsci.com.) Products not manufactured by CSI, but that are resold by CSI, are warranted only to the limits extended by the original manufacturer.
- Page 4 SCIENTIFIC, INC., phone (435) 227-9000. After an application engineer determines the nature of the problem, an RMA number will be issued. Please write this number clearly on the outside of the shipping container. Campbell Scientific’s shipping address is: CAMPBELL SCIENTIFIC, INC.
- Page 5 Periodically (at least yearly) check electrical ground connections. • WHILE EVERY ATTEMPT IS MADE TO EMBODY THE HIGHEST DEGREE OF SAFETY IN ALL CAMPBELL SCIENTIFIC PRODUCTS, THE CUSTOMER ASSUMES ALL RISK FROM ANY INJURY RESULTING FROM IMPROPER INSTALLATION, USE, OR MAINTENANCE OF TRIPODS, TOWERS, OR ATTACHMENTS TO TRIPODS AND TOWERS SUCH AS SENSORS, CROSSARMS, ENCLOSURES, ANTENNAS, ETC.
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Page 7: Table Of Contents
Table of Contents PDF viewers: These page numbers refer to the printed version of this document. Use the PDF reader bookmarks tab for links to specific sections. 1. Introduction ..............1 2. Precautions ..............1 3. Initial Inspection ............1 Ships With .................... - Page 8 Table of Contents B. Example Programs ..........B-1 Example CR1000 Program .............. B-1 Example CR6 Program ..............B-2 Figures 5-1. LI200R spectral response ..............5 7-1. LI200R schematic ................10 Tables 7-1. Datalogger Connections for Differential Measurements ....11 7-2.
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Page 9: Introduction
• cut the cable jacket. If damage to the cable is suspected, consult with a Campbell Scientific application engineer. Although the LI200R is rugged, it should be handled as a precision • scientific instrument. Keep the sensor clean. The vertical edge of the diffuser must be kept clean •... -
Page 10: Ships With
QuickStart Short Cut is an easy way to program your datalogger to measure the LI200R and assign datalogger wiring terminals. Short Cut is available as a download on www.campbellsci.com and the ResourceDVD. - Page 11 Click to move the selection to the Selected device window. Enter the LI200R Output that is provided on the calibration sheet shipped with the sensor. This value is unique to the individual sensor. The flux density defaults to kW/m^2 and the total flux defaults to MJ/m^2. This can be changed by clicking the Flux Density or Total Flux box and selecting one of the other options.
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Page 12: Overview
The LI200R is calibrated against an Eppley Precision Spectral Pyranometer to accurately measure sun plus sky radiation. Do not use the LI200R under vegetation or artificial lights because it is calibrated for the daylight spectrum (400 to 1100 nm). FIGURE shows the pyranometer’s spectral response. -
Page 13: Specifications
LI200R Pyranometer FIGURE 5-1. LI200R spectral response The –L portion of the model number indicates that the LI200R has a user- specified cable length. Its cables can terminate in: Pigtails that connect directly to a Campbell Scientific datalogger • (cable termination option –PT). -
Page 14: Installation
(p. 2) Siting The LI200R should be mounted such that no shadows or reflections are cast on it by the tripod/tower or other sensors. The sensor should be mounted with the cable pointing towards the nearest magnetic pole. For example, in the Northern Hemisphere, point the cable toward the North Pole. -
Page 15: Mounting To An Instrument Mount
7.2.2 Mounting Procedure 7.2.2.1 LI2003S Mounting The LI200R must be mounted to the LI2003S to attach the sensor to the CM225 Solar Sensor Mounting Stand or the 015ARM Mounting Arm. To do this, place the LI200R in the center of the LI2003S base/leveling fixture and secure the LI200R to the LI2003S by tightening the small Phillips screws. -
Page 16: Cm225 Solar Sensor Mounting Stand
U-bolt nuts. Mounting Screws CM225 Stand CM200 Series U-bolt Nuts Crossarm Loosely mount the LI2003S and LI200R on the CM225. Do not fully tighten the three mounting screws. Threaded mounting holes used with the LI200R are indicated in yellow. -
Page 17: 015Arm
LI200R Pyranometer Secure the cable to the crossarm and mast using cable ties. Cable Ties Cable Remove the red cap after installing the sensor. Save this cap for shipping or storing the sensor. 7.2.2.3 015ARM Secure the 015ARM to the mast by tightening the U-bolt nuts. -
Page 18: Wiring
LI200R Pyranometer Loosely mount the LI2003S and LI200R on the 015ARM. Do not fully tighten the three mounting screws. Threaded mounting holes used with the LI200R are indicated in yellow. Turn the leveling screws as required to bring the bubble of the bubble level within the ring. -
Page 19: Programming
Appendix B, Example Programs (p. B-1) Programming basics and programming examples for Edlog dataloggers are provided at www.campbellsci.com/old-manuals. Output from the LI200R is 0.2 kW m –2 –1 , which is measured by the datalogger using the VoltDiff() CRBasic instruction. CRBasic is included in PC400 and LoggerNet datalogger support software. -
Page 20: Input Range
LI200R Pyranometer 7.4.1 Input Range The following is an example of how to determine the optimum input range for a given sensor calibration and maximum expected irradiance. This is an example only. Your values will be different. This example uses the calibration provided by LI-COR ®... -
Page 21: Troubleshooting
Calibration Recalibrate the LI200R every two years. The LI200R is designed so that the sensor can be separated into two parts — the sensor head containing the photodiode can be disconnected from the base and cabling. Calibration values follow the sensor head. Each sensor head has a unique calibration value. -
Page 22: Taking The Sensor Apart
Part Number Description Notes LI-COR Replacement Replace this O-ring every time ® 31976 LI190R and LI200R O-ring a sensor is separated. Cover comes with three small LI-COR ® LI190R and *31977 Phillips screws. Cap and LI200R Sensor Base Cover screws can be reused. -
Page 23: If Using A Cover
LI200R Pyranometer With a small screwdriver, gently pry the printed circuit board away from the pins. Do not twist the wires any more than absolutely necessary. Put the sensor head in a safe place. 8.3.2.1 If Using a Cover Place the sensor cover (pn 31977) over the base and screw it into place using the three Phillips screws. -
Page 24: Acknowledgements
LI200R Pyranometer Remember to update the datalogger program with the new sensor head calibration value. Pack the head for shipment and send it to Campbell Scientific. Refer to the page at the beginning of this document for the required Assistance procedure for sending equipment to Campbell Scientific. -
Page 25: Importing Short Cut Code Into Crbasic Editor
Appendix A. Importing Short Cut Code Into CRBasic Editor This tutorial shows: How to import a Short Cut program into a program editor for • additional refinement • How to import a wiring diagram from Short Cut into the comments of a custom program Short Cut creates files, which can be imported into CRBasic Editor. -
Page 27: Example Programs
Appendix B. Example Programs The following programs measure the LI200R every 10 seconds, and converts the mV output to Wm –2 and MJ m –2 . The programs output an hourly average flux (Wm –2 ) and a daily total flux density (MJm –2... -
Page 28: Example Cr6 Program
Scan(10,Sec,1,0) 'Default Datalogger Battery Voltage measurement 'BattV' Battery(BattV) 'Default Wiring Panel Temperature measurement 'PTemp_C' PanelTemp(PTemp_C,60) 'LI200R Pyranometer measurements 'SlrMJ' and 'SlrW' 'Measurement returns SlrW in millivolts. VoltDiff(SlrW,1,mV200,U1,True,0,60,1,0) 'Set negative value to zero. If SlrW<0 Then SlrW=0 'Convert millivolts to Megajoules/m². - Page 29 Appendix B. Example Programs 'Convert millivolts to Watts/m² SlrW=SlrW*140.1149 'Call Data Tables and Store Data CallTable Table1 CallTable Table2 NextScan EndProg...
- Page 30 Appendix B. Example Programs...
- Page 32 Santo Domingo, Heredia 40305 SOUTH AFRICA COSTA RICA • cleroux@csafrica.co.za • info@campbellsci.cc www.campbellsci.co.za www.campbellsci.cc Campbell Scientific Southeast Asia Co., Ltd. Campbell Scientific Ltd. 877/22 Nirvana@Work, Rama 9 Road Campbell Park Suan Luang Subdistrict, Suan Luang District 80 Hathern Road Bangkok 10250...
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