Apogee Instruments SQ-212 Скачать руководство пользователя страница 1

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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

QUANTUM SENSOR

Model SQ-212, SQ-222, SQ-215, and SQ-225

(including SS models, formerly smaller)

Содержание SQ-212

Страница 1: ...1800 NORTH LOGAN UTAH 84321 USA TEL 435 792 4700 FAX 435 787 8268 WEB APOGEEINSTRUMENTS COM Copyright 2020 Apogee Instruments Inc OWNER S MANUAL QUANTUM SENSOR Model SQ 212 SQ 222 SQ 215 and SQ 225 including SS models formerly smaller ...

Страница 2: ...liance 3 Introduction 4 Sensor Models 5 Specifications 6 Deployment and Installation 9 Cable Connectors 10 Operation and Measurement 11 Maintenance and Recalibration 17 Troubleshooting and Customer Support 19 Return and Warranty Policy 21 ...

Страница 3: ...ment of electrical and electronic 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 polybr...

Страница 4: ...rs that measure PPFD are often called quantum sensors due to the quantized nature of radiation A quantum refers to the minimum quantity of radiation one photon involved in physical interactions e g absorption by photosynthetic pigments In other words one photon is a single quantum of radiation Typical applications of quantum sensors include measurement of incident PPFD on plant canopies in outdoor...

Страница 5: ...SQ 316 Self powered Sunlight SQ 326 Self powered Electric light SQ 420 USB Sunlight and Electric light SQ 421 SDI 12 Sunlight and Electric light SQ 422 Modbus Sunlight and Electric light Serial Number 0 10573 SQ 212 0 10273 SQ 222 0 10433 SQ 215 0 10533 SQ 225 Sensor model number and serial number are located near the pigtail leads on the sensor cable If you need the manufacturing date of your sen...

Страница 6: ... 2500 µmol m 2 s 1 maximum PPFD measurement is 2500 µmol m 2 s 1 Response Time Less than 1 ms Field of View 180 Spectral Range 410 to 655 nm wavelengths where response is greater than 50 of maximum see Spectral Response below Spectral Selectivity Less than 10 from 469 to 655 nm Directional Cosine Response 5 at 75 zenith angle see Cosine Response below Temperature Response 0 06 0 06 per C see Tempe...

Страница 7: ...a fixed broad spectrum electric lamp At each temperature set point a spectroradiometer was used to measure light intensity from the lamp and all quantum sensors were compared to the spectroradiometer The spectroradiometer was mounted external to the temperature control chamber and remained at room temperature during the experiment Mean spectral response of six SQ 100 series quantum sensors error b...

Страница 8: ...quantum sensors from the mean of replicate reference quantum sensors LI COR models LI 190 and LI 190R Kipp Zonen model PQS 1 Data were also collected in the laboratory using a reference lamp and positioning the sensor at varying angles Directional cosine response is defined as the measurement error at a specific angle of radiation incidence Error for Apogee SQ 100 series quantum sensors is approxi...

Страница 9: ...e southern hemisphere Azimuth error is typically less than 1 but it is easy to minimize by proper cable orientation In addition to orienting the cable to point toward the nearest pole the sensor should also be mounted such that obstructions e g weather station tripod tower or other instrumentation do not shade the sensor Once mounted the green cap should be removed from the sensor The green cap ca...

Страница 10: ... contact Apogee directly 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 electr...

Страница 11: ...a device please note your serial number or if your sensor has a stainless 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 depen...

Страница 12: ...8381 Example of PPFD measurement with an Apogee quantum sensor Full sunlight yields a PPFD on a horizontal plane at the Earth s surface of approximately 2000 µmol m 2 s 1 This yields an output signal of 4000 mV for the 0 5 V option or an output signal of 2000 mV for the 0 2 5 V option The signal is converted to PPFD by multiplying by the calibration factor Full Sunlight 2000 µmol m 2 s 1 Sensor Ou...

Страница 13: ...ric lamps cool white fluorescent metal halide high pressure sodium but larger errors for different mixtures of light emitting diodes LEDs for the SQ 100 series sensors Spectral errors for the SQ 500 series sensors are smaller than those for SQ 100 series sensors because the spectral response of SQ 500 series sensors is a closer match to the defined plant photosynthetic response Quantum sensors are...

Страница 14: ...n growth chambers was similar but there were differences particularly at shorter wavelengths less than 450 nm There was also some variability between species McCree 1972a Inada 1976 McCree 1972b found that equally weighting all photons between 400 and 700 nm and summing the result defined as photosynthetic photon flux density PPFD in units of mol m 2 s 1 was well correlated to photosynthesis and v...

Страница 15: ... M D Clegg 1971 Photosynthesis light sensor and meter Ecology 52 125 131 Federer C A and C B Tanner 1966 Sensors for measuring light available for photosynthesis Ecology 47 654 657 Inada K 1976 Action spectra for photosynthesis in higher plants Plant and Cell Physiology 17 355 365 McCree K J 1972a The action spectrum absorptance and quantum yield of photosynthesis in crop plants Agricultural Meteo...

Страница 16: ...an be derived by making measurements in air and at multiple water depths at a constant distance from a lamp in a controlled laboratory setting Apogee SQ 100 series and SQ 300 series quantum sensors have an immersion effect correction factor of 1 08 This correction factor should be multiplied by PPFD measurements made underwater to yield accurate PPFD Further information on underwater measurements ...

Страница 17: ...erances See the Apogee webpage for details regarding return of sensors for recalibration http www apogeeinstruments com tech support recalibration repairs To determine if a specific sensor needs recalibration the Clear Sky Calculator www clearskycalculator com website and or smartphone app can be used to indicate PPFD incident on a horizontal surface at any time of day at any location in the world...

Страница 18: ...rs are available one for quantum sensors PPFD and one for pyranometers total shortwave radiation Clear Sky Calculator for quantum sensors Site data are input in blue cells in middle of page and an estimate of PPFD is returned on right hand side of page ...

Страница 19: ...1 SQ 215 and SQ 225 Thus a compatible measurement device e g datalogger or controller should have resolution of at least 1 mV to provide PPFD resolution of 1 µmol m 2 s 1 Serial Numbers 8382 and above SQ 200 series quantum sensors are calibrated with a standard calibration factor of 1 6 µmol m 2 s 1 per mV SQ 212 and SQ 222 or 0 8 µmol m 2 s 1 per mV SQ 215 and SQ 225 yielding a sensitivity of 0 6...

Страница 20: ...requires spectral output of the radiation source of interest Conversion factors for common radiation sources can be found on the Unit Conversions page in the Support Center on the Apogee website http www apogeeinstruments com unit conversions scroll down to Quantum Sensors section A spreadsheet to convert PPFD to energy flux density or illuminance is also provided in the Unit Conversions page in t...

Страница 21: ...r 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 accuracy drift is normal over time Routine recalibration o...

Страница 22: ...anship 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 apogeeinstruments com to discuss repair or replacement options OTH...

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