Apogee Instruments SU-200 Owner'S Manual Download Page 18

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 SU-200

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 ULTRAVIOLET A SENSOR Models SU 200 including SS models ...

Page 2: ...e of Compliance 3 Introduction 4 Sensor Models 5 Specifications 6 Deployment and Installation 9 Cable Connectors 10 Operation and Measurement 11 Maintenance and Recalibration 14 Troubleshooting and Customer Support 15 Return and Warranty Policy 17 ...

Page 3: ...f 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 polybrominat...

Page 4: ...to Joules per second per square meter The output can also be expressed in photon flux density units of micromoles per square meter per second µmol m 2 s 1 Typical applications of UV sensors include incoming UV radiation measurement in outdoor environments or in laboratory use with artificial light sources e g germicidal lamps Apogee Instruments SU 200 series UV A sensors consist of a cast acrylic ...

Page 5: ...ate of your sensor please contact Apogee Instruments with the serial number of your sensor SENSOR MODELS This manual covers the unamplified model SU 200 UV A sensor listed below in bold Additional models are covered in their respective manuals Model Signal SU 200 0 10 mV SU 202 0 2 5 V SU 205 0 5 V SU 220 USB ...

Page 6: ...cal of sensitivity 10 W m 2 per mV 30 µmol m s per mV Calibration Uncertainty 10 Output Range 0 to 10 mV Measurement Range 0 to 100 W m 2 Measurement Repeatability Less than 0 5 Long term Drift Less than 2 per year Non linearity Less than 1 Response Time Less than 1 ms Field of View 180 Spectral Range 300 to 400 nm wavelengths where response is greater than 10 of maximum see Spectral Response belo...

Page 7: ...error for Apogee SU 200 series UV A sensors is approximately 2 and 5 at solar zenith angles of 45 and 75 respectively Mean cosine response of four Apogee UV A sensors Cosine response was calculated as the relative difference of UV A sensors from the mean of replicate reference UV A sensors deployed outdoors These data are the average of the AM and PM response ...

Page 8: ...Spectral Response Spectral response estimate of Apogee SU 200 UV A sensors Spectral response was modeled from sensitivity of the photodetector and transmittance of the diffuser ...

Page 9: ... 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 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 statio...

Page 10: ...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 an installation protect the remaining half of the connector still on the station from water and dirt with electrical tape or other method A reference ...

Page 11: ...0 mV is required to cover the entire range of the SU 200 UV A sensor In order to maximize measurement resolution and signal to noise ratio the input range of the measurement device should closely match the output range of the UV sensor DO NOT connect the sensor to a power source The sensor is self powered and applying voltage will damage the sensor Wiring for SU 200 White Output Signal Black Groun...

Page 12: ...0 W m 2 per mV Sensor Output Signal mV UV A W m 2 10 W m 2 per mV 6 mV 60 W m 2 Example of UV A measurement with an Apogee UV A sensor Full sunlight yields UV A radiation on a horizontal plane at the Earth s surface of approximately 60 W m 2 This yields an output signal of 6 mV The signal is converted to UV A radiation by multiplying by the calibration factor of 10 W m 2 per mV Full Sunlight 60 W ...

Page 13: ... UV A radiation coming from electric lamps table provides spectral error estimates for UV A radiation measurements from radiation sources other than clear sky solar radiation For most common lamps the error is less than 10 The SU 200 is particularly useful for determining the UV A filtering capacity of the transparent plastic and glass barriers that are commonly used below electric lamps Radiation...

Page 14: ...e 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 Never use solvents such as alcohol or acetone to clean the sensor Use only gentle pressure when cleaning the diffuser with a cotton swab or soft cloth to avoid scratching the outer surface The vine...

Page 15: ...R1 Zero Offset Error With the use of certain dataloggers it is possible to measure a non zero voltage zero offset when the sensor output should be zero no UV irradiance incident on diffuser This offset can be corrected by adding or subtracting the measured offset from the sensor output However if the offset is substantial and your sensor is outputting unrealistic values then it may need to be reca...

Page 16: ... an example of how to convert energy flux units to photon flux 1 Calculate the sensor output in units of J m 2 s 1 6 𝑚𝑉 10 𝑊𝑚 2 𝑚𝑉 60 𝑊 𝑚2 60 𝐽 𝑚2𝑠 2 Multiply the energy flux units by the conversion factor It s important to note that each light source needs a specific conversion factor The conversion factor used in the example equation is the sunlight conversion factor 60 𝐽 𝑚2𝑠 0 327 𝜇𝑚𝑜𝑙 𝐽 19 62 ...

Page 17: ...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 18: ...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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