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Summary of Contents for Kipp & Zonen CMP 3
- Page 1 Instruction Manual CMP series • Pyranometer CMA series • Albedometer...
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Page 3: Important User Information
Important User Information Dear customer, thank you for purchasing a Kipp & Zonen instrument. It is essential that you read this manual completely for a full understanding of the proper and safe installation, use, maintenance and operation of your new CMP series pyranometer or CMA series albedometer. -
Page 5: Declaration Of Conformity
The Netherlands declares under our sole responsibility that the product CMP 3, CMP 6, CMP10, CMP 11, CMP 21 and CMP 22 Pyranometer CMA 6 and CMA 11 Albedometer to which this declaration relates is in conformity with European Harmonised Standards as published in Official Journal of the EC, issue: C321/1 23-10-2012... -
Page 7: Table Of Contents
................................................................1.1.1 The pyranometer and albedometer ......................................................1.1.2 International Standards ............................................................The CMP 3 pyranometer ............................................................. The CMP10 pyranometer ............................................................ The CMP 6, CMP 11, CMP 21 and CMP 22 pyranometers ........................................The CMA 6 and CMA 11 albedometers .................................................... - Page 8 Maintenance and Re-calibration ....................................................Daily maintenance ..............................................................Monthly maintenance ............................................................. Yearly maintenance ..............................................................Calibration ..................................................................... 5.4.1 Calibration principle ..............................................................5.4.2 Calibration traceability to the WRR ....................................................... Specifications ................................................................Optical and electrical ............................................................... Dimensions and weight ............................................................Trouble shooting ..............................................................Output signal not present or incorrect ....................................................
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Page 9: Introduction
The CMA series also measures the amount of the incoming radiation which is reflected by the surface below. There are six models in the CMP series; CMP 3, CMP 6, CMP10, CMP 11, CMP 21 and CMP 22; and two models in the CMA series, CMA 6 and CMA 11. -
Page 10: International Standards
4 mm thick. The housing is completely sealed. CMP 6 uses the same sensing element as CMP 3 but has improved performance due to the double glass dome construction and the increased thermal mass of the larger housing. -
Page 11: The Cmp 3 Pyranometer
1.2 The CMP 3 pyranometer glass dome detector sun shield connector bubble level housing fixed foot adjustable feet 1.3 The CMP10 pyranometer outer glass dome inner glass dome detector bubble level sun shield connector desiccant housing fixed foot adjustable feet... -
Page 12: The Cmp 6, Cmp 11, Cmp 21 And Cmp 22 Pyranometers
1.4 The CMP 6, CMP 11, CMP 21 and CMP 22 pyranometers outer glass dome inner glass dome detector bubble level sun shield connector drying cartridge housing fixed foot adjustable feet 1.5 The CMA 6 and CMA 11 albedometers outer glass dome inner glass dome upper detector bubble level... -
Page 13: Installation
Instruction sheet Pyranometer fixing kit CMP 3; 2 each of stainless steel M5 x 30, M5 x 40 and M5 x 50 mm screws, nut, flat washer Pyranometer fixing kit CMP 6, CMP10, CMP 11, CMP 21 and CMP 22; 2 each of stainless steel M5 x 80 mm screw, nut, flat... -
Page 14: Tools Required
Check the condition of the desiccant and replace before installation, if necessary; for example after a long storage period. Not required for CMP 3. The CMP10 internal desiccant is operational 10 years after the last calibration date as mentioned on the instrument label and calibration certificate. -
Page 15: Mounting
The CMP pyranometer is provided with two holes for 5 mm screws. Two each of stainless steel screws, washers and nuts are provided in the fixing kit, and two nylon insulation rings (except for CMP 3). The pyranometer should first be secured lightly with the screws to a solid and stable mounting stand or platform, as shown below. -
Page 16: Orientation
CMP 3 has an accessory mounting rod which screws into the base flange of the pyranometer. The rod is 12 mm diameter and 300 mm long and can be used with the CMB 1 mounting bracket. -
Page 17: Installation For Measurement Of Reflected Global Irradiance
Albedo is the ratio of the two irradiances, and varies from 0 (dark) to 1 (bright). Pyranometers Two CMP 3’s can be mounted back to back with the standard fixing kit, and the accessory mounting rod screwed into one of them, to make a second Glare screen (white) class albedometer. -
Page 18: Installation For Measurement Of Horizontal Diffuse Irradiance
2.9.1 Pyranometer connections CMP 3, CMP 6, CMP10 and CMP 11 are fitted with a 2-pin connector and 2-wire shielded cable. CMP 21 and CMP 22 are fitted with a 4-pin connector and 4-wire shielded cable, the 2 extra connections are for the standard 10 kΩ thermistor temperature sensor signal. -
Page 19: Albedometer Connections
2.9.2 Albedometer connections CMA 6 and CMA 11 are fitted with a 4-pin connector and 4-wire shielded cable. Radiation Signal Wire Function Connect with + (Hi) Upper Blue - (Lo) Green + (Hi) Lower Yellow - (Lo) Shield Housing Ground 2.9.3 Grounding The shield of the cable is connected to the aluminium radiometer housing through the connector body. -
Page 21: Accessories
For measuring di use radiation a shading device is required. Kipp & Zonen can o er several options for CMP pyranometers: Shadow ring CM 121B for a CMP 3 or an unventilated CMP 6, CMP10, CMP 11, CMP 21 or CMP 22 Shadow ring CM 121C for a ventilated CMP 6, CMP10, CMP 11, CMP 21 or CMP 22 This shadow ring needs to be adjusted manually every 3-5 days and corrections made for the part of the sky obscured by the ring. -
Page 22: Cables
3.5 Cables As standard a 10 m long cable with a pre-wired waterproof connector plug is supplied. Optional longer cables are available, or a loose connector only for you to fit to your own cable. 10 m cable with connector (standard) 25 m cable with connector 50 m cable with connector Loose connector without cable... -
Page 23: Operation And Measurement
'cold' sky) and the delicate black coating must be protected. Therefore the detector is shielded by two domes (except for the entry-level CMP 3, which has only one dome to reduce size and cost). These domes allow equal transmittance of the direct solar radiation component for every position of the sun in the hemisphere above the detector. - Page 24 outer glass dome inner glass dome detector bubble level sun shield connector desiccant housing fixed foot adjustable feet Key parts of the CMP10 pyranometer outer glass dome inner glass dome detector bubble level sun shield connector drying cartridge housing fixed foot adjustable feet Key parts of the CMP 6, CMP 11, CMP 21 and CMP 22 pyranometers outer glass dome...
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Page 25: Dome(S)
For all except the CMP 3, the bubble level is visible from above without removing the snap-on white sun shield (CMP 3 has the bubble level in the base flange). The sun shield acts to protect all the external parts and to reduce solar heating... -
Page 26: Drying Cartridge
4.2.4 Drying Cartridge The entry-level CMP 3 has a sealed construction with a non-replaceable internal drying cartridge. However, this also makes it non-serviceable. For serviceability of the higher performance radiometers the construction cannot be completely sealed. In this case, over time, water vapour can ‘breathe’ into the housing, mainly due to temperature and pressure changes. -
Page 27: Maintenance And Re-Calibration
Ideally, the dome of the pyranometer should be cleaned every morning before sunrise. The frequency of cleaning can be reduced by the use of a ventilation unit (not available for the CMP 3, CMA 6 and CMA 11), with the heaters switched on when necessary. -
Page 28: Calibration Principle
5.4.1 Calibration principle At the Kipp & Zonen factory pyranometers are calibrated, or re-calibrated, in our laboratory according to ISO 9847:1992 ‘Solar energy - Calibration of field pyranometers by comparison to a reference pyranometer’, Annex A ‘Calibration devices using artificial sources’. The specific method is given in Annex A.3.1 and is described in the standard as the ‘Kipp & Zonen (calibration) device and procedure’. -
Page 29: Specifications
6. Specifications Kipp & Zonen reserves the right to make changes to specifications and other product documentation without prior notice. 6.1 Optical and electrical Specifications CMP 3 CMP 6 CMP10 & CMP 11 CMP 21 CMP 22 Classification to ISO 9060:1990... -
Page 31: Trouble Shooting
7 . Trouble shooting Note There are no user-serviceable parts within the CMP pyranometers and CMA albedometers. They must not be opened without the agreement and instruction of Kipp & Zonen. 7.1 Output signal not present or incorrect The following contains a procedure for checking the instrument in case it appears that it does not function correctly: 1. - Page 32 Q: What is the primary entry point for humidity? A: The CMP 3 is fully sealed, but this also means that it is not serviceable. The construction of the other CMP and CMA radiometers allows servicing, such as dome replacement. However, this means that there are seals in the construction that are waterproof, but not gas-tight.
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Page 33: Customer Support
8. Customer support If you require any support for your Kipp & Zonen product please contact your local representative in the first instance. The information can be found in the ‘Contact’ section of our website at www.kippzonen.com Alternatively, you can contact us directly at www.kippzonen.com/support Please include the following information: •... -
Page 35: Keyword Index
9. Keyword index Term Explanation Albedo The portion of incoming radiation which is reflected by a surface Azimuth angle Angle in horizontal direction (0 to 360 °) normally referred to North Cosine response Radiometer directional response according to the cosine of the zenith angle Di use horizontal irradiance Solar radiation, scattered by water vapour, dust and other particles as it passes through the atmosphere, falling onto a horizontal plane surface (DHI) -
Page 37: Appendix A. Pyranometer Physical Properties
3000 4000 Wavelength [nm] Solar radiation spectrum at sea level Spectral response of CMP 3 Spectral response of CMP 6, CMP10, CMP 11, CMA 6 and CMA 11 Spectral response of CMP 22 A.2 Sensitivity The radiometer thermopile sensitivity is mainly determined by the physical properties of the detector itself. The thermoelectric power, thermal conductivity of the junctions and the overall dimensions of the sensing element are related to its sensitivity. -
Page 38: Temperature Dependence
This inner dome acts as a ‘radiation bu er’. Also see section 7.2. This o set can be minimized by applying appropriate ventilation of the instrument. No ventilation unit is available for the CMP 3, CMA 6 or CMA 11. The CVF4 ventilation unit can be used with the CMP 6, CMP10, CMP 11, CMP 21 and CMP 22. -
Page 39: Zero Offset Type B
A.9 Zero offset type B Proportionally to the ambient temperature the instrument temperature varies and causes thermal currents inside the instrument. This will cause an o set commonly called Zero O set Type B. It is quantified in ISO 9060:1990 as the response in W/m² to a 5 K/hr change in ambient temperature. -
Page 40: Spectral Selectivity
A.15 Spectral selectivity Spectral selectivity is the variation of the dome transmittance and absorption coe cient of the black detector coating with wavelength and is commonly specified as % of the mean value. A.16 Environmental The CMP and CMA series are intended for outdoor use under all expected weather conditions. The radiometers comply with IP 67 and their solid mechanical construction is suitable to be used under all environmental conditions within the specified ranges. -
Page 41: Appendix B. Pyranometer Classification To Iso 9060:1990(E)
Tilt response percentage deviation from the responsivity at 0° tilt (horizontal) due to change in tilt from 0° to 90° at 1000 W/m² irradiance Reference number ISO Pyranometer Categories CMP 3 CMP 6/CMA 6 CMP10, 11/CMA 11 CMP 21 CMP 22 ISO 9060:1990 classification... -
Page 43: Appendix C. 10K Thermistor Specifications
Appendix C. 10k Thermistor specifications Thermistor (10 k @ 25 °C) β • (ln(R))+γ •(ln(R)) [°C] Temperature α + -273.15 Resistance α : 1.03 • 10 β : 2.38 • 10 γ : 1.59 • 10 YSI Thermistor 44031 - Resistance versus Temperature in °C and °F Temperature Temperature Resistance... -
Page 45: Appendix D. Pt-100 Specifications
Appendix D. Pt-100 specifications Pt-100 (100 @ 0°C) [°C] Temperature - α + α • β • Resistance • β : 3.9083 • : -5.8019 • α β Pt-100 - Resistance versus Temperature in °C and °F Temperature Temperature Resistance Temperature Resistance Temperature... - Page 46 Our customer support remains at your disposal for any maintenance or repair, calibration, supplies and spares. Für Servicearbeiten und Kalibrierung, Verbrauchsmaterial und Ersatzteile steht Ihnen unsere Customer Support Abteilung zur Verfügung. Notre service 'Support Clientèle' reste à votre entière disposition pour tout problème de maintenance, réparation ou d'étalonnage ainsi que pour les accessoires et pièces de rechange.