Apogee SQ-520 Owner'S Manual Download Page 25 | Manualshive

Page: 25 / 28

Apogee SQ-520 Owner'S Manual Download Page 25

25

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.

Homepage of the Clear Sky Calculator.
Two calculators are available: one for
quantum sensors (PPFD) and one for
pyranometers (total shortwave
radiation).

«
...
23
24
25
26
27
...
»

Summary of Contents for SQ-520

Page 1: ...EE INSTRUMENTS INC 721 WEST 1800 NORTH LOGAN UTAH 84321 USA TEL 435 792 4700 FAX 435 787 8268 WEB APOGEEINSTRUMENTS COM Copyright 2016 Apogee Instrument Inc OWNER S MANUAL USB QUANTUM SENSOR Model SQ...

Page 2: ...roduction 4 Sensor Models 5 Specifications 6 Deployment and Installation 9 Software Installation 10 Operation and Measurement 10 Windows Software 14 Mac Software 19 Maintenance and Recalibration 24 Tr...

Page 3: ...laboratory use EMC requirements EN 50581 2012 Technical documentation for the assessment of electrical and electronic products with respect to the restriction of hazardous substances Please be advised...

Page 4: ...ic photon flux The acronyms PPF and PPFD refer to the same parameter The two terms have co evolved because there is not a universal definition of the term flux Some physicists define flux as per unit...

Page 5: ...Q 300 series SQ 212 SQ 222 and SQ 215 SQ 225 and SQ 214 SQ 224 manuals Model Signal SQ 520 USB SQ 500 Self powered Sensor model number and serial number are located near USB connector If you need the...

Page 6: ...ibration Traceability below Measurement Range 0 to 4000 mol m 2 s 1 Measurement Repeatability Less than 1 up to 4000 mol m 2 s 1 Long term Drift Non stability Less than 2 per year Non linearity Less t...

Page 7: ...s measured with a spectroradiometer Mean temperature response of ten SQ 500 series quantum sensors errors bars represent two standard deviations above and below mean Temperature response measurements...

Page 8: ...nd 5 at solar zenith angles of 45 and 75 respectively Mean cosine response of seven apogee SQ 500 quantum sensors Cosine response measurements were made on the rooftop of the Apogee building in Logan...

Page 9: ...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 pr...

Page 10: ...installer package 2 On the Introduction screen please click Continue to proceed 3 Select Continue on the Read Me screen to continue this screen contains a history of updates made to the ApogeeConnect...

Page 11: ...se for SQ 100 series sensors because the SQ 500 spectral response is a closer match to the defined plant photosynthetic response Spectral Errors for PPFD and YPFD Measurements with Apogee SQ Series Qu...

Page 12: ...n 400 and 700 nm and summing the result defined as photosynthetic photon flux density PPFD mol m 2 s 1 was well correlated to photosynthesis very similar to correlation between YPFD and photosynthesis...

Page 13: ...e sensor in water than in air Smith 1969 Tyler and Smith 1970 As more light is reflected less light is transmitted through the diffuser to the detector which causes the sensor to read low Without corr...

Page 14: ...Plug the sensor into a USB port and allow some time for the sensor to automatically establish communication with the software Once established the message in the lower left corner will display Device...

Page 15: ...in firmware and can be recovered by clicking the Recover Original button Deriving a new calibration multiplier and offset is accomplished by clicking the Recalibrate button This is applicable if user...

Page 16: ...ier and offset values will automatically calculate and update in the appropriate field Be sure to click Save to retain the new multiplier and offset Clicking Data Logging will allow the user to log in...

Page 17: ...clicking the Data Logging button The Stop button must be clicked to end data logging Manage Field Logging is used to setup the SQ 520 for use in the field When the SQ 520 is supplied power from a USB...

Page 18: ...the sampling interval in minutes or seconds The sampling interval is how often a measurement is taken and logging interval is how often the data is saved The logged data is the average of the samples...

Page 19: ...r Plug the sensor into a USB port and allow some time for the sensor to automatically establish communication with the software Once established the message in the lower left corner will display Devic...

Page 20: ...o take measurements underwater Click the Settings icon to display the software options Clicking Light Source will allow the user to change the sensor s default calibration reference from Electric to S...

Page 21: ...ecific light source Note that a reference PAR value of the light source is required to complete a recalibration After clicking the Recalibrate button the user will be prompted to cover the sensor Plac...

Page 22: ...Start The data logging window will start to update at the specified sampling interval and display the Timestamp Light Source and Data Value At the same time data will be written to the csv file Note t...

Page 23: ...d data is the average of the samples The logging interval must be evenly divided by the sampling interval For example if the logging interval is 5 minutes and the sampling interval is 2 minutes it cau...

Page 24: ...mer 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 ra...

Page 25: ...are input in blue cells in middle of page and an estimate of PPFD is returned on right hand side of page Homepage of the Clear Sky Calculator Two calculators are available one for quantum sensors PPF...

Page 26: ...r than photon flux density e g energy flux density illuminance may be required for certain applications It is possible to convert the PPFD value from a quantum sensor to other units but it requires sp...

Page 27: ...mproper 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 unauthor...

Page 28: ...sible for any direct indirect incidental or consequential damages including but not limited to loss of income loss of revenue loss of profit loss of wages loss of time loss of sales accruement of debt...

Reviews:

No comments