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LI-COR LI-250A, Instruction Manual

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LI-250A Light Meter

Instruction Manual

LI-COR Distributor Network:

www.licor.com/env/distributors

LI-COR Biosciences

4647 Superior Street
Lincoln, Nebraska 68504
Phone: +1-402-467-3576
Toll free: 800-447-3576 (U.S. and Canada)
[email protected]

Regional Offices

LI-COR Biosciences GmbH

Siemensstraße 25A
61352 Bad Homburg
Germany
Phone: +49 (0) 6172 17 17 771
[email protected]

LI-COR Biosciences UK Ltd.

St. John’s Innovation Centre
Cowley Road
Cambridge
CB4 0WS
United Kingdom
Phone: +44 (0) 1223 422102
[email protected]

Summary of Contents for LI-250A

Page 1: ...LI 250A Light Meter Instruction Manual...

Page 2: ......

Page 3: ...4 Phone 1 402 467 3576 Toll free 800 447 3576 U S and Canada envsales licor com Regional Offices LI COR Biosciences GmbH Siemensstra e 25A 61352 Bad Homburg Germany Phone 49 0 6172 17 17 771 envsales...

Page 4: ...FITNESS FOR A PARTICULAR PURPOSE LI COR shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing performance or use of this material...

Page 5: ...nts 4 Section 2 Overview of compatible sensors Overview ofradiation sensorcalibration 5 Understandingthecertificateofcalibration 6 Compatiblesensorsandaccessories 9 Appendix A Specifications RangeandR...

Page 6: ...c calibration calibrations are associated with the attached light sensor Configuration mode vs measurement mode The LI 250A has two modes of operation Configuration Mode where you enter calibration mu...

Page 7: ...select W m 2 actual units are Watts m 2 l For a Photometric Sensor select Lux or Klux actual units are Lux or Kilolux Readings will be incorrect if the selected units do not match the sensor that is c...

Page 8: ...ng CAL when in measurement mode will display the multiplier in current use The multiplier displayed when CAL is pressed again will be stored as the active multiplier whether you have changed it or not...

Page 9: ...Insert the new battery by pushing straight down on the battery do not try to insert at an angle Instruments are fitted with a snap on connector simply align the male and female contacts and snap onto...

Page 10: ...t possible for a pyranometer to read out in units of lux If you want the LI 250A to display units of lux you must use the photometric sensor Recalibration of all LI COR radiation sensors is recom mend...

Page 11: ...alibration cer tificates are available from licor com env support The Calibration Constant is the relationship between a microamp of sensor current output and photons of radi ation The value is labele...

Page 12: ...ibration Figure 1 For terrestrial radiation sensors LI 190R LI 191R LI 200R and LI 210R the value required by the LI 250A is labeled as For use with LI COR handheld meters and loggers The units given...

Page 13: ...or use in air and another for use in water Older radiation sensors For type SA sensors manufactured between September 1985 and March 2015 the calibration multiplier is attached to the sensor cable and...

Page 14: ...ll sensors are available from licor com env support Compatible sensors and accessories The following accessories and sensors are available for the LI 250A Contact LI COR for current information l LI 1...

Page 15: ...al to that for the average human eye Readout of illuminance in lux is used for lighting studies or architectural mod eling l 250 01 Carrying Case A padded case for the LI 250A and terrestrial type rad...

Page 16: ...e entered from the keypad Sensor Averaging Sensor output is averaged for 15 seconds when AVG key is pressed in Measurement mode Averages are displayed in HOLD mode to retain the average on the display...

Page 17: ...tery Detection Low battery indicator displayed with approximately 20 hours battery life remaining Size 15 cm L 8 2 cm W 3 3 cm D 5 9 3 2 1 3 Weight 0 26 kg 0 57 lbs Compatible Sensors Any LI COR senso...

Page 18: ...1999 mol s 1 m 2 0 1 mol s 1 m 2 0 19999 mol s 1 m 2 1 mol s 1 m 2 Pyranometer Range Resolution 0 19 W m 2 0 001 W m 2 0 199 W m 2 0 01 W m 2 0 1999 W m 2 0 1 W m 2 Photometric Sensor Range Resolution...

Page 19: ...2 6 022 1017 quanta s 1 m 2 6 022 1013 quanta s 1 cm 2 Pyranometer 1 W m 2 1 433 10 3 cal cm 2 min 1 1 433 10 3 langley min 1 0 100 mW cm 2 100 W cm 2 1 0 J s 1 m 2 1000 erg s 1 cm 2 0 317 BTU ft 2 h...

Page 20: ...tions which are 1 The defects are called to the attention of LI COR Inc in Lincoln Nebraska in writing within one year after the shipping date of the instrument 2 The instrument has not been maintaine...

Page 21: ...ument without charge if LI COR Inc s examination disclosed that part to have been defective in material or workmanship There are no warranties express or implied includ ing but not limited to any impl...

Page 22: ...ch is a twelve month period commencing from the date the instrument is shipped to a user who is a customer or eighteen months from the date of shipment to LI COR Inc s authorized distributor whichever...

Page 23: ...AppendixB Warranty Further information concerning this warranty may be obtained by writing or telephoning Warranty manager at LI COR Inc 18...

Page 24: ......

Page 25: ...al Offices LI COR Biosciences GmbH Siemensstra e 25A 61352 Bad Homburg Germany Phone 49 0 6172 17 17 771 envsales gmbh licor com LI COR Biosciences UK Ltd St John s Innovation Centre Cowley Road Cambr...

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