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INSTRUCTION

MANUAL

LP02 Pyranometer

Revision: 1/14

C o p y r i g h t © 2 0 0 6 - 2 0 1 4

C a m p b e l l S c i e n t i f i c , I n c .

Содержание LP02

Страница 1: ...INSTRUCTION MANUAL LP02 Pyranometer Revision 1 14 C o p y r i g h t 2 0 0 6 2 0 1 4 C a m p b e l l S c i e n t i f i c I n c ...

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Страница 3: ...removing reinstalling and shipping defective products to Campbell Campbell will return such products by surface carrier prepaid within the continental United States of America To all other locations Campbell will return such products best way CIP Port of Entry INCOTERM 2010 prepaid This warranty shall not apply to any products which have been subjected to modification misuse neglect improper servi...

Страница 4: ...ng container Campbell Scientific s shipping address is CAMPBELL SCIENTIFIC INC RMA _____ 815 West 1800 North Logan Utah 84321 1784 For all returns the customer must fill out a Statement of Product Cleanliness and Decontamination form and comply with the requirements specified in it The form is available from our web site at www campbellsci com repair A completed form must be either emailed to repa...

Страница 5: ...o Program Datalogger and Generate Wiring Diagram 5 5 Overview 8 6 Specifications 8 7 Operation 10 7 1 Wiring 10 7 2 Programming 11 7 2 1 Input Range 11 7 2 2 Multiplier 12 7 2 3 Offset 12 7 2 4 Example Programs 12 7 2 4 1 CR1000 Example Program 13 7 2 4 2 CR10X Example Program 14 7 2 5 Output Format Considerations 15 8 Maintenance 16 9 Troubleshooting 16 Appendix A CM245 Adjustable Angle Mounting ...

Страница 6: ...mount the pyranometer horizontally on a crossarm A 1 A 2 CM245 bracket with 1 5 in U bolts positioned to mount pyranometer at a 40 angle on a vertical pipe A 2 Tables 7 1 Differential Connections to Campbell Scientific Dataloggers 10 7 2 Single Ended Connections to Campbell Scientific Dataloggers 11 7 3 Multipliers Required for Flux Density and Total Fluxes 12 7 4 Wiring for Example Programs 13 ii...

Страница 7: ...ell Scientific application engineer 3 Initial Inspection Upon receipt of the LP02 inspect the packaging and contents for damage File damage claims with the shipping company The model number and cable length are printed on a label at the connection end of the cable Check this information against the shipping documents to ensure the correct product and cable length are received See Section 3 1 Ships...

Страница 8: ...o choose a site where any obstruction over the azimuth range between earliest sunrise and latest sunset has an elevation not exceeding 5 Diffuse solar radiation is less influenced by obstructions near the horizon For instance an obstruction with an elevation of 5 over the whole azimuth range of 360 decreases the downward diffuse solar radiation by only 0 8 4 2 Mounting Below shows the steps for us...

Страница 9: ... Mast 2 Place the LP02 in the center of the CM225 with the cable pointing to the nearest magnetic pole and align the sensor s mounting holes with two of the bracket s mounting holes see FIGURE 4 3 and FIGURE 4 4 FIGURE 4 3 LP02 Mounting Hole Mounting Hole 3 ...

Страница 10: ...5 FIGURE 4 5 LP02 Pyranometer Attached to CM225 Solar Sensor Mounting Stand 4 Starting with the leveling screw nearest the bubble level turn the leveling screws to bring the bubble of the bubble level within the ring see FIGURE 4 5 Mounting Hole Mounting Hole Mounting Hole Bubble Level 3 Leveling Screws CM225 Solar Sensor Mounting Stand 2 Mounting Screws CM200 Series Crossarm LP02 Pyranometer Cabl...

Страница 11: ...le to CM225 bracket and to the vertical pipe or crossarm and tripod tower see FIGURE 4 5 4 3 Use SCWin to Program Datalogger and Generate Wiring Diagram The simplest method for programming the datalogger to measure the LP02 is to use Campbell Scientific s SCWin Program Generator 1 Open Short Cut and click on New Program 2 Select the Datalogger Model and enter the Scan Interval 5 ...

Страница 12: ... to the list of sensors to be measured and then select Next 4 Enter the Sensitivity supplied on the manufacturer s certificate of calibration this sensitivity is unique to each sensor The public variables defaults can typically be used After entering the information click on OK and then select Next 6 ...

Страница 13: ...lect Finish 6 In the Save As window enter an appropriate file name and select Save 7 In the Confirm window click Yes to download the program to the datalogger 8 Click on Wiring Diagram and wire according to the wiring diagram generated by Short Cut 7 ...

Страница 14: ...ics needed to fulfill the cosine response requirements The LP02 s cable has a user specified length that can terminate in Pigtails that connect directly to a Campbell Scientific datalogger cable termination option PT Connector that attaches to a prewired enclosure cable termination option PW Connector that attaches to a CWS900 Wireless Sensor Interface cable termination option CWS The CWS900 enabl...

Страница 15: ...ctivity 5 280 to 3000 nm Temperature response within an interval of 50 C 3 10 to 40 C Tilt response within 2 Sensitivity nominal 15 μV W m 2 Expected voltage output 0 1 to 50 mV in natural sunlight Operating temperature range 40 to 80 C Sensor resistance Between 40 and 60 Ω Range 0 to 2000 W m 2 Cable replacement Cable can be replaced by the user Spectral range 280 to 3000 nm 50 transmission point...

Страница 16: ...ections to Campbell Scientific dataloggers for a differential measurement are given in TABLE 7 1 A user supplied jumper wire should be connected between the low side of the differential input and ground AG or to keep the signal in common mode range Connections to Campbell Scientific dataloggers for a single ended measurement are given in TABLE 7 2 TABLE 7 1 Differential Connections to Campbell Sci...

Страница 17: ...cause it has better noise rejection than a single ended measurement If a differential channel is not available a single ended measurement can be used The acceptability of a single ended measurement can be determined by simply comparing the results of single ended and differential measurements made under the same conditions 7 2 1 Input Range The output voltage of the LP02 is usually between 10 and ...

Страница 18: ...nits Multipliers Output Processing W m 2 m Average MJ m 2 M t 0 000001 Total kJm 2 M t 0 001 Total cal cm 2 M t 0 0239 0 001 Total cal cm 2 min 1 M 1 434 0 001 Average m calibration factor in W m 2 mV t datalogger program execution interval in seconds 7 2 3 Offset The offset will normally be fixed at zero as the sensor should output no significant signal in dark conditions In practice because of t...

Страница 19: ...60 Min 10 Average 1 Solar_Wm2 FP2 False EndTable Daily Data Table DataTable Table2 True 1 DataInterval 0 1440 Min 10 Totalize 1 Solar_MJ IEEE4 False EndTable Main Program BeginProg Scan 10 Sec 1 0 LP02 Pyranometer measurement in Wm 2 The Multiplier m for this example is based upon a sensor calibration c of 15 02 µV Wm 2 and will be different for each sensor Multiplier m 1000 c 66 577896 VoltDiff S...

Страница 20: ...ctor is 25 µV Wm 2 5 66 5778 Multiplier 6 0 Offset Set negative values to zero 2 If X F P89 1 3 X Loc Solar_Wm2 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 Solar_Wm2 4 End P95 Calculate units in MJ where MJ m t 0 000001 m Solar_Wm2 from above and t 10 scan interval 5 Z X F P37 1 3 X Loc Solar_Wm2 2 00001 F 3 4 Z Loc Solar_MJ 6 If time is P92 1 0 Minutes Seconds int...

Страница 21: ...me danger of over ranging the output limits as shown in the following example Example Assume that daily total flux is desired and that the datalogger scan rate is 1 second With a multiplier that converts the readings to units of kJm 2 and an average irradiance of 0 5k W m 2 the maximum low resolution output limit will be exceeded in less than four hours The following solutions can be used to preve...

Страница 22: ...d exposure to radiation Recalibration every two years is recommended The sensor should be returned to Campbell Scientific the manufacturer or a calibration lab with facilities to calibrate radiation sensors 9 Troubleshooting Symptom NAN 9999 or radiation values around 0 1 Check that the sensor is wired to the differential channel specified by the measurement instruction 2 Verify that the range cod...

Страница 23: ...signal shows unexpected variations 1 Check for the presence of strong sources of electromagnetic radiation radar radio etc 2 Check the condition and the connection of the sensor shield wire 3 Check the condition of the sensor cable 17 ...

Страница 24: ...LP02 Pyranometer 18 ...

Страница 25: ...sure that the crossarm is leveled horizontally before placing the bracket at its proper angle Angle positions are included on the bracket label see FIGURE A 1 and FIGURE A 2 FIGURE A 1 CM245 bracket with 2 125 in U bolts positioned to mount the pyranometer horizontally on a crossarm First 2 125 in U bolt Second 2 125 in U bolt Second 2 125 in U bolt First 2 125 in U bolt 90 Pyranometer mounts here...

Страница 26: ...e crossarm 2 Loosely mount the pyranometer on the mounting stand Do not fully tighten the two mounting screws 3 Turn the leveling screws as required to bring the bubble of the level within the ring 4 Tighten the mounting screws to secure the assembly in its final position Check that the pyranometer is still correctly leveled and adjust as necessary First 1 5 in U bolt Second 1 5 in U bolt 40 pn 17...

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Страница 28: ...CANADA www campbellsci ca dataloggers campbellsci ca Campbell Scientific Centro Caribe S A CSCC 300 N Cementerio Edificio Breller Santo Domingo Heredia 40305 COSTA RICA www campbellsci cc info campbellsci cc Campbell Scientific Ltd CSL Campbell Park 80 Hathern Road Shepshed Loughborough LE12 9GX UNITED KINGDOM www campbellsci co uk sales campbellsci co uk Campbell Scientific Ltd CSL France 3 Avenu...

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