Campbell CMP6-L Instruction Manual
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Campbell CMP6-L Instruction Manual

Pyranometers
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CMP6 -L, CMP11-L, and
CMP21-L Pyranometers
Revision: 9/13
C o p y r i g h t
©
2 0 0 6 - 2 0 1 3
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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Summary of Contents for Campbell CMP6-L

  • Page 1 CMP6 -L, CMP11-L, and CMP21-L Pyranometers Revision: 9/13 C o p y r i g h t © 2 0 0 6 - 2 0 1 3 C a m p b e l l S c i e n t i f i c , I n c .
  • Page 3 Campbell pricelist or product manual. Products not manufactured, but that are re-sold by Campbell, are warranted only to the limits extended by the original manufacturer. Batteries, fine-wire thermocouples, desiccant, and other consumables have no warranty.
  • Page 4 SCIENTIFIC, INC., phone (435) 227-9000. After an applications 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: 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. Cautionary Statements..........1 3. Initial Inspection ............1 Ships With....................2 Calibration Certificate ................2 4.
  • Page 6 A-5. CVF3 filter replacement ..............A-5 Tables 6-1. CMP-series Specifications..............7 7-1. CMP6 and CMP11 Differential Connections to Campbell Scientific Dataloggers..............12 7-2. CMP6 and CMP11 Single-Ended Connections to Campbell Scientific Dataloggers..............13 7-3. CMP21 Differential Connections to Campbell Scientific...
  • Page 7 Table of Contents 7-4. CMP21 Single-Ended Connections to Campbell Scientific Dataloggers..................14 7-5. Multipliers Required for Flux Density and Total Fluxes ....15 7-6. CR1000 Wiring for CMP6 Example Program ........17 7-7. CR1000 Wiring for CMP11 Example Program .........18 7-8. CR1000 Wiring for CMP21 Example Program .........19 7-9.
  • Page 8 Table of Contents...

  • Page 9: Introduction

    Initial Inspection Check the contents of the shipment. If there is a shortage (see Section 3.1, Ships With), contact Campbell Scientific. If any damage has occurred during transport, immediately file a claim with the carrier and contact Campbell Scientific to facilitate repair or replacement.

  • Page 10: Ships With

    CMP6-L, CMP11-L, and CMP21-L Pyranometers Ships With (2) Bolts for mounting from original mfg (1) Instruction Manual from original mfg (1) Sun Shield from original mfg (2) Nylon washers from original mfg Calibration Certificate Each pyranometer is shipped with an instruction manual provided by Kipp &...

  • Page 11: Mounting

    CMP6-L, CMP11-L, and CMP21-L Pyranometers Mounting See Section 7.1, Mounting to a Tripod Tower, for more information. FIGURE 4-1. Pyranometer installation CM245 Adjustable Angle Mounting Stand CM2XX-Series Crossarm FIGURE 4-2. Pyranometer mounted horizontally for the Northern Hemisphere (left) and Southern Hemisphere (right)

  • Page 12: Two Views Of A Pyranometer Mounted At An Angle For The Northern Hemisphere

    CMP6-L, CMP11-L, and CMP21-L Pyranometers FIGURE 4-3. Two views of a pyranometer mounted at an angle for the Northern Hemisphere FIGURE 4-4. Pyranometer mounted at an angle for the Southern Hemisphere...

  • Page 13: Datalogger Programming / Wiring

    Datalogger Programming / Wiring The simplest method for programming the datalogger to measure a CMP6 or CMP11 is to use Campbell Scientific's SCWin Short Cut Program Generator (see FIGURE 4-5). Wire the pyranometer according to the wiring diagram generated by Short Cut.

  • Page 14: Overview

    The pyranometers have several cable termination options. Their cables 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).

  • Page 15: Specifications

    CMP6-L, CMP11-L, and CMP21-L Pyranometers Specifications Pyranometers TABLE 6-1. CMP-series Specifications Specification CMP6 CMP11 CMP21 ISO Classification First Class Secondary Standard –2 –2 Maximum irradiance 2000 W•m 4000 W•m Spectral range 285 to 2800 nm (50% points) Response time (95 %) <18 s...

  • Page 16: Cvf3 Ventilation Unit

    CMP6-L, CMP11-L, and CMP21-L Pyranometers FIGURE 6-1. Dimensions of the CMP6, CMP11, and CMP21 CVF3 Ventilation Unit Compatible Pyanometers: CMP6, CMP11, CMP21 Power supply: 12 Vdc, 1.3 A (with 10 W Heater) Operating temperature range: –40° to 70°C Ventilation power:...

  • Page 17: Installation

    CMP6-L, CMP11-L, and CMP21-L Pyranometers Installation Mounting to a Tripod or Tower Tools required for installation on a tripod or tower: Small and medium Phillips screwdrivers 5/16”, 1/2” open end wrenches 5/32” Allen wrench Tape measure UV-resistant wire ties Side-cut pliers...

  • Page 18: Cm245 Bracket With 1.5" U-Bolts Positioned To Mount Pyranometer At A 40° Angle On A Vertical Pipe

    CMP6-L, CMP11-L, and CMP21-L Pyranometers Second First 1.5” 1.5” u-bolt u-bolt FIGURE 7-2. CM245 bracket with 1.5” u-bolts positioned to mount pyranometer at a 40° angle on a vertical pipe Do the following to level the pyranometer horizontally (see FIGURE 7-3): 1.

  • Page 19: Wiring

    CMP6-L, CMP11-L, and CMP21-L Pyranometers Sun shield Mounting screws Nylon washers Bubble level Pyranometer Levelling screw mounting st Crossarm FIGURE 7-3. Exploded view of the pyranometer mounting Wiring Short Cut users should wire the sensor according to the wiring NOTE diagram generated by Short Cut.

  • Page 20: Cmp6, Cmp11, And Cmp21 Thermopile Schematic

    ) 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. CMP6 and CMP11 Differential Connections to Campbell Scientific Dataloggers CR9000(X), CR5000, CR3000, CR1000, CR510, CR500,...

  • Page 21: Cmp21 Wiring

    CMP6-L, CMP11-L, and CMP21-L Pyranometers TABLE 7-2. CMP6 and CMP11 Single-Ended Connections to Campbell Scientific Dataloggers CR9000(X), CR5000, CR3000, CR1000, CR510, CR500, Color Description CR800 CR10(X) 21X, CR7, CR23X White Signal (+) SE Analog SE Analog SE Analog Black Signal (–)

  • Page 22: Programming

    CMP6-L, CMP11-L, and CMP21-L Pyranometers TABLE 7-4. CMP21 Single-Ended Connections to Campbell Scientific Dataloggers CR9000(X), Wire Label/ CR5000, CR3000, CR510, CR500, 21X, CR7, CR23X Wire Color Description CR1000, CR800 CR10(X) White Pyranometer Sig Single-ended analog Single-ended analog Single-ended analog Blue...

  • Page 23: Input Range

    CMP6-L, CMP11-L, and CMP21-L Pyranometers 7.3.1.1 Input Range –2 The output voltage is usually between 5 and 20 mV per 1000 W•m . When estimating the maximum likely value of sensor output a maximum value of –2 solar radiation of 1100 W•m can be used for field measurements on a –2...

  • Page 24: Offset

    CMP6-L, CMP11-L, and CMP21-L Pyranometers 7.3.1.3 Offset The offset will normally be fixed at zero as the sensor should output no significant signal in dark conditions. In practice, because of the nature of thermopile detector sensors, there will be some offset in dark conditions;...

  • Page 25: Example Programs

    CMP6-L, CMP11-L, and CMP21-L Pyranometers Where, Vx = the value provided by the half bridge instruction In CRBasic, the conversion to resistance is entered as a mathematical expression. In Edlog, Instruction P59 (Bridge Transform) does the conversion. The Steinhart-Hart equation is used to convert resistance to temperature. The...

  • Page 26: Cr1000 Example Program For Measuring A Cmp11

    CMP6-L, CMP11-L, and CMP21-L Pyranometers 'CR1000 Series Datalogger Public PTemp Public Batt_Volt Public CMP6_Irr Units CMP6_Irr = W/m2 DataTable (TenMin,1,-1) DataInterval (0,1,Min,4) Minimum (1,Batt_Volt,FP2,0,False) Sample (1,PTemp,FP2) Average (1,CMP6_Irr,FP2,False) StdDev (1,CMP6_Irr,FP2,False) EndTable BeginProg Scan (1,Sec,0,0) 'Measure the Battery Voltage and Panel Temperature...

  • Page 27: Cr1000 Example Program For Measuring A Cmp21

    CMP6-L, CMP11-L, and CMP21-L Pyranometers 'CR1000 Series Datalogger Public PTemp Public Batt_Volt Public CMP11_Irr Units CMP11_Irr = W/m2 DataTable (TenMin,1,-1) DataInterval (0,1,Min,4) Minimum (1,Batt_Volt,FP2,0,False) Sample (1,PTemp,FP2) Average (1,CMP11_Irr,FP2,False) StdDev (1,CMP11_Irr,FP2,False) EndTable BeginProg Scan (1,Sec,0,0) 'Measure the Battery Voltage and Panel Temperature...

  • Page 28: Cr10X Example Program For Measuring A Cmp6

    CMP6-L, CMP11-L, and CMP21-L Pyranometers 'CR1000 Series Datalogger Public PTemp Public Batt_Volt Public CMP21_Irr Public CMP21_T_C Public CMP21_T_K Dim Rs,Vs_Vx Units CMP21_Irr = W/m2 Units CMP21_T_C = Degrees C Units CMP21_T_K = Degrees K DataTable (TenMin,1,-1) DataInterval (0,1,Min,8) Minimum (1,Batt_Volt,FP2,0,False)

  • Page 29: Wiring

    CMP6-L, CMP11-L, and CMP21-L Pyranometers Wiring for the example is given in TABLE 7-9. TABLE 7-9. CR10X Wiring for CMP6 Example Program Wire Color Description CR10X Jumper* White Solar Signal (+) Black Solar Signal (–) Clear Shield * Jumper 1L to AG terminal on CR10X with user-supplied 26 AWG or larger wire.

  • Page 30: Maintenance

    CMP6-L, CMP11-L, and CMP21-L Pyranometers 7: Set Active Storage Area (P80) 1: 1 Final Storage Area 1 2: 101 Array ID 8: Real Time (P77) 1: 1220 Year,Day,Hour/Minute (midnight = 2400) 9: Average (P71) 1: 1 Reps 2: 3 Loc [ Solar_Wm2 ]...

  • Page 31: Cleaning Domes

    Changing the Desiccant A desiccant-filled drying cartridge prevents dew from forming on the inner sides of the domes; Campbell Scientific part number 27052 is the replacement desiccant for this cartridge. The optional CVF3 Heater/Ventilator Unit is also available to keep the pyranometer dome free from ice and dew (see Appendix A, CVF3 Heater/Ventilator).

  • Page 32: Check Sensor Output

    The calibration of the pyranometer may drift with time and exposure to radiation. Recalibration every two years is recommended. The sensor should be returned to Campbell Scientific for recalibration. A Returned Materials Authorization (RMA) is required (refer to the Assistance page for more...

  • Page 33: Troubleshooting

    CMP6-L, CMP11-L, and CMP21-L Pyranometers Troubleshooting Symptom: NAN, –9999, or radiation values around 0 Check that the sensor is wired to the differential channel specified by the measurement instruction. Verify that the range code is correct for the datalogger type.
  • Page 34 CMP6-L, CMP11-L, and CMP21-L Pyranometers...

  • Page 35: General Information

    5 W of power at 12 Vdc. These power requirements are large compared to most Campbell Scientific products. Because of this, the CVF3 should be connected to the 21326 Power Net 5 A Power Supply and the 7321 Crydom Relay.

  • Page 36: Cvf3 Installation

    Appendix A. CVF3 Heater/Ventilator A.3 CVF3 Installation The CVF3 heater/ventilator unit includes the heater/ventilator unit, white cover, cable, and mounting hardware. Tools required for mounting to a tripod or tower are: • Small and medium Phillips screwdrivers • 5/16”, 1/2” open end wrenches •...
  • Page 37 Appendix A. CVF3 Heater/Ventilator 4. Loosely mount the pyranometer on the 27084 mounting stand. Do not fully tighten the two mounting screws. 5. Turn the CVF3’s leveling screws bringing the bubble of the pyranometer’s level within the ring (see FIGURE A-3). FIGURE A-3.
  • Page 38 Appendix A. CVF3 Heater/Ventilator FIGURE A-4. Fastening cover on CVF3 8. Attach the power cable to the CVF3 connector. A.4 Wiring Wiring of the CVF3 is shown in TABLE A-1. Refer to Section 7.2, Wiring, for information about wiring the pyranometer. TABLE A-1.

  • Page 39: Cvf3 Heater/Ventilator Maintenance

    Appendix A. CVF3 Heater/Ventilator A.5 CVF3 Heater/Ventilator Maintenance 1. Refer to Section 8, Maintenance, for the pyranometer’s maintenance. 2. Inspect the area directly under the 120 mm diameter hole in the mounting plate to ensure that it is free from leaves, snow, or other obstructions that can inhibit air flow.
  • Page 40 Appendix A. CVF3 Heater/Ventilator...
  • Page 42 Campbell Scientific Ltd. (CSL Germany) Fahrenheitstraße 13 28359 Bremen GERMANY www.campbellsci.de • info@campbellsci.de Campbell Scientific Spain, S. L. (CSL Spain) Avda. Pompeu Fabra 7-9, local 1 08024 Barcelona SPAIN www.campbellsci.es • info@campbellsci.es Please visit www.campbellsci.com to obtain contact information for your local US or international representative.

This manual is also suitable for:

Cmp11-lCmp21-l

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