Apogee Instruments SP-212 Скачать руководство пользователя

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APOGEE INSTRUMENTS, INC. |

721 WEST 1800 NORTH, LOGAN, UTAH 84321, USA

TEL: (435) 792-4700 | FAX: (435) 787-8268 | WEB: APOGEEINSTRUMENTS.COM

OWNER’S MANUAL

PYRANOMETER

Models SP-212 and SP-215

Rev: 7-Sept-2021

Содержание SP-212

Страница 1: ...ENTS INC 721 WEST 1800 NORTH LOGAN UTAH 84321 USA TEL 435 792 4700 FAX 435 787 8268 WEB APOGEEINSTRUMENTS COM Copyright 2021 Apogee Instruments Inc OWNER S MANUAL PYRANOMETER Models SP 212 and SP 215 Rev 7 Sept 2021 ...

Страница 2: ...ertificate of Compliance 3 Introduction 4 Sensor Models 5 Specifications 6 Deployment and Installation 10 Operation and Measurement 12 Maintenance and Recalibration 16 Troubleshooting and Customer Support 18 Return and Warranty Policy 19 ...

Страница 3: ...lectronic products with respect to the restriction of hazardous substances Please be advised that based on the information available to us from our raw material suppliers the products manufactured by us do not contain as intentional additives any of the restricted materials including lead see note below mercury cadmium hexavalent chromium polybrominated biphenyls PBB polybrominated diphenyls PBDE ...

Страница 4: ...good quality classifications and specifications for International Organization of Standardization ISO Class C classification but because of limited spectral sensitivity they do not meet the spectral specification necessary for WMO certification Typical applications of silicon cell pyranometers include incoming shortwave radiation measurement in agricultural ecological and hydrological weather netw...

Страница 5: ... 12198 SP 212 0 12208 SP 215 A sensor s model number and serial number are located near the pigtail leads on the sensor cable If you need the manufacturing date of your sensor please contact Apogee Instruments with the serial number of your sensor Serial Numbers 12199 SP 212 12209 SP 215 and above A sensor s model number and serial number are located on the bottom of the sensor If you need the man...

Страница 6: ...o 2000 W m 2 maximum radiation measurement is 2000 W m 2 Non linearity from serial numbers 10516 and below Less than 1 up to 1250 W m 2 maximum radiation measurement is 1250 W m 2 Response Time Less than 1 ms Field of View 180 Spectral Range 360 to 1120 nm wavelengths where response is 10 of maximum see Spectral Response below Directional Cosine Response 5 at 75 zenith angle see Cosine Response be...

Страница 7: ... standard pyranometers are calibrated through side by side comparison to the mean of at least two ISO classified reference pyranometers under sunlight clear sky conditions in Logan Utah Each of four ISO classified reference pyranometers are recalibrated on an alternating year schedule two instruments each year at the National Renewable Energy Laboratory NREL in Golden Colorado NREL reference stand...

Страница 8: ...ternal thermistor to measure temperature At each temperature set point a reference blackbody pyranometer was used to measure solar intensity Spectral response estimate of Apogee silicon cell pyranometers Spectral response was estimated by multiplying the spectral response of the photodiode diffuser and adhesive Spectral response measurements of diffuser and adhesive were made with a spectrometer a...

Страница 9: ...wable Energy Laboratory NREL in Golden Colorado Cosine response was calculated as the relative difference of pyranometer sensitivity at each solar zenith angle to sensitivity at 45 solar zenith angle The blue symbols are AM measurements the red symbols are PM measurements Directional or cosine response is defined as the measurement error at a specific angle of radiation incidence Error for Apogee ...

Страница 10: ...uch as wood To facilitate mounting on a mast or pipe the Apogee Instruments model AL 120 Solar Mounting Bracket with Leveling Plate is recommended To minimize azimuth error the sensor should be mounted with the cable pointing toward true north in the northern hemisphere or true south in the southern hemisphere Azimuth error is typically less than 1 but it is easy to minimize by proper cable orient...

Страница 11: ...ly to ensure ordering the proper pigtail configuration Alignment When reconnecting a sensor arrows on the connector jacket and an aligning notch ensure proper orientation Disconnection for extended periods When disconnecting the sensor for an extended period of time from a station protect the remaining half of the connector still on the station from water and dirt with electrical tape or other met...

Страница 12: ...nless steel connector 30 cm from the sensor head then use the appropriate wiring configuration listed below With the switch to connectors we also changed to using cables that only have 4 or 7 internal wires To make our various sensors easier to connect to your device we clip off any unused wire colors at the end of the cable depending on the sensor If you cut the cable or modify the original pigta...

Страница 13: ...ation Factor 0 8 W m 2 per mV Sensor Output Signal mV Shortwave Radiation W m 2 0 8 1250 1000 Serial Number Range 0 10516 Example of total shortwave radiation measurement with an Apogee SP 212 pyranometer Full sunlight yields total shortwave radiation on a horizontal plane at the Earth s surface of approximately 1000 W m 2 s 1 This yields an output signal of 2000 mV The signal is converted to shor...

Страница 14: ...silicon cell pyranometers in these conditions The graphs below show spectral error estimates for Apogee silicon cell pyranometers at varying solar zenith angles and varying atmospheric air mass The diffuser is optimized to minimize directional errors thus the cosine response graph in the Specifications section shows the actual directional errors in practice which includes contributions from the sp...

Страница 15: ...flected from Conifer Canopy 19 2 Reflected from Agricultural Soil 12 1 Reflected from Forest Soil 4 1 Reflected from Desert Soil 3 0 Reflected from Water 6 6 Reflected from Ice 0 3 Reflected from Snow 13 7 Spectral error for Apogee SP series pyranometers as a function of atmospheric air mass assuming calibration at an air mass of 1 5 Spectral error for Apogee SP series pyranometers as a function o...

Страница 16: ... a horizontal surface at any time of day at any location in the world It is most accurate when used near solar noon in spring and summer months where accuracy over multiple clear and unpolluted days is estimated to be 4 in all climates and locations around the world For best accuracy the sky must be completely clear as reflected radiation from clouds causes incoming radiation to increase above the...

Страница 17: ... middle of page and an estimate of total shortwave radiation is returned on right hand side of page Homepage of the Clear Sky Calculator Two calculators are available One for pyranometers total shortwave radiation and one for quantum sensors photosynthetic photon flux density ...

Страница 18: ...V per W m 2 respectively Thus a compatible measurement device e g datalogger or controller should have resolution of at least 2 mV in order to provide shortwave radiation resolution of 1 W m 2 Serial Numbers 10517 and above SP 200 series pyranometers are calibrated with a standard calibration factor of 0 8 W m 2 per mV SP 212 or 0 4 W m 2 per mV SP 215 yielding a sensitivity of 1 25 mV per W m 2 o...

Страница 19: ...tion and shipping of suspected warranty items to our factory The warranty does not cover equipment that has been damaged due to the following conditions 1 Improper installation or abuse 2 Operation of the instrument outside of its specified operating range 3 Natural occurrences such as lightning fire etc 4 Unauthorized modification 5 Improper or unauthorized repair Please note that nominal accurac...

Страница 20: ... specifications due to a failure of product materials or craftsmanship Apogee Instruments will repair or replace the items free of charge If it is determined that your product is not covered under warranty you will be informed and given an estimated repair replacement cost PRODUCTS BEYOND THE WARRANTY PERIOD For issues with sensors beyond the warranty period please contact Apogee at techsupport ap...

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