Apogee Instruments SQ-620 Owner'S Manual Download Page 15

APOGEE INSTRUMENTS, INC. | 721 WEST 1800 NORTH, LOGAN, UTAH 84321, USA 

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

Copyright © 2020 Apogee Instruments, Inc. 

Authorization (RMA) number from our technical support department by submitting an online RMA form at 

www.apogeeinstruments.com/tech-support-recalibration-repairs/

We will use your RMA number for tracking of the 

service item. Call (435) 245-8012 or email [email protected] with questions. 

2. For warranty evaluations, send all RMA sensors and meters back in the following condition: Clean the sensor’s exterior 
and cord. Do not modify the sensors or wires, including splicing, cutting wire leads, etc. If a connector has been attached 
to the cable end, please include the mating connector – otherwise the sensor connector will be removed in order to 
complete the repair/recalibration. Note: When sending back sensors for routine calibration that have Apogee’s standard 
stainless-steel connectors, you only need to send the sensor with the 30 cm section of cable and one-half of the 
connector. We have mating connectors at our factory that can be used for calibrating the sensor.
   

3. Please write the RMA number on the outside of the shipping container.  

4. Return the item with freight pre-paid and fully insured to our factory address shown below. We are not responsible for 
any costs associated with the transportation of products across international borders.  

Apogee Instruments, Inc.  
721 West 1800 North Logan, UT 
84321, USA  

5. Upon receipt, Apogee Instruments will determine the cause of failure. If the product is found to be defective in terms 
of operation to the published 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 

[email protected]

 t

discuss repair or replacement options. 

OTHER TERMS  

The available remedy of defects under this warranty is for the repair or replacement of the original product, and Apogee 
Instruments is not responsible for any direct, indirect, incidental, or consequential damages, including but not limited to 
loss of income, loss of revenue, loss of profit, loss of data, loss of wages, loss of time, loss of sales, accruement of debts 
or expenses, injury to personal property, or injury to any person or any other type of damage or loss.  

This limited warranty and any disputes arising out of or in connection with this limited warranty ("Disputes") shall be 
governed by the laws of the State of Utah, USA, excluding conflicts of law principles and excluding the Convention for the 
International Sale of Goods. The courts located in the State of Utah, USA, shall have exclusive jurisdiction over any 
Disputes.  

This limited warranty gives you specific legal rights, and you may also have other rights, which vary from state to state 
and jurisdiction to jurisdiction, and which shall not be affected by this limited warranty. This warranty extends only to 
you and cannot by transferred or assigned. If any provision of this limited warranty is unlawful, void or unenforceable, 
that provision shall be deemed severable and shall not affect any remaining provisions. In case of any inconsistency 
between the English and other versions of this limited warranty, the English version shall prevail.  

This warranty cannot be changed, assumed, or amended by any other person or agreement

 

Summary of Contents for SQ-620

Page 1: ...NTS INC 721 WEST 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 EXTENDED RANGE PFD SENSOR Models SQ 620 Rev 28 Oct 2020 ...

Page 2: ...te of Compliance 3 Introduction 4 Sensor Models 5 Specifications 6 Deployment and Installation 8 Cable Connectors 9 Operation and Measurement 9 Maintenance and Recalibration 12 Troubleshooting and Customer Support 13 Return and Warranty Policy 14 ...

Page 3: ...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 polybromina...

Page 4: ...tum sensor Typical applications of traditional quantum sensors include incoming PPFD measurement over plant canopies in outdoor environments or in greenhouses and growth chambers and reflected or under canopy transmitted PPFD measurement in the same environments The Extended Range PFD Sensor detailed in this manual uses a detector that is sensitive to radiation up to about 1100 nm well beyond the ...

Page 5: ... respective manuals Model Signal SQ 620 Self powered SQ 622 0 2 5 V SQ 624 4 20 mA SQ 625 0 5 V SQ 626 USB SQ 627 SDI 12 SQ 628 Modbus Sensor model number and serial number are located on the bottom of the sensor If the manufacturing date of a specific sensor is required please contact Apogee Instruments with the serial number of the sensor ...

Page 6: ...ear Non linearity Less than 1 up to 4000 µmol m 2 s 1 Response Time Less than 1 ms Field of View 180 Spectral Range 340 to 1040 nm 5 nm wavelengths where response is greater than 50 see Spectral Response below Directional Cosine Response 2 at 45 zenith angle 5 at 75 zenith angle see Directional Response below Azimuth Error Less than 0 5 Tilt Error Less than 0 5 Temperature Response 0 11 0 04 per C...

Page 7: ... respectively Mean spectral response measurements of six replicate Apogee SQ 600 series Extended Range PFD Sensors Spectral response measurements were made at 10 nm increments across a wavelength range of 300 to 1100 nm in a monochromator with an attached electric light source Measured spectral data from each PFD sensor were normalized by the measured spectral response of the monochromator electri...

Page 8: ...unted with the cable pointing toward true north in the northern hemisphere or true south in the southern hemisphere Azimuth error is typically less than 0 5 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 no...

Page 9: ...ease 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 el...

Page 10: ...f approximately 0 200 mV is required to cover the photon flux density range the sensor is capable of measuring In order to maximize the measurement resolution and signal to noise ratio the signal input range of the measurement device should closely match the output range of the PFD sensor Wiring for SQ 620 White Positive signal from sensor Black Negative signal from sensor Clear Shield Ground ...

Page 11: ...µmol m 2 s 1 per mV Sensor Output Signal mV Photon Flux Density µmol m 2 s 1 20 50 1000 Example of photon flux density measurement with an Apogee model SQ 620 Extended Range PFD Sensor The LED in this example Full yields a photon flux density on a horizontal plane of 1000 µmol m 2 s 1 This yields an output signal of 50 mV This signal is converted to photon flux density by multiplying by the calibr...

Page 12: ...ation water Apogee Instruments upward looking sensors have a domed diffuser and housing for improved self cleaning from rainfall but active cleaning may be necessary Dust or organic deposits are best removed using water or window cleaner and a soft cloth or cotton swab Salt deposits should be dissolved with vinegar and removed with a cloth or cotton swab Salt deposits cannot be removed with solven...

Page 13: ...sitivity of 0 05 mV per µmol m 2 s 1 Thus a compatible measurement device e g datalogger or controller should have resolution of at least 0 05 mV in order to provide photon flux density resolution of 1 µmol m 2 s 1 and resolution of at least 0 005 mV in order provide photon flux density resolution of 0 1 µmol m 2 s 1 An example datalogger program for Campbell Scientific dataloggers can be found on...

Page 14: ...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...

Page 15: ...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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