LI-COR LI-190R User manual

Terrestrial
Quantum Sensors
Instruction Manual
LI-190R Quantum Sensor
LI-191R Line Quantum Sensor

Terrestrial Quantum Sensors
Instruction Manual
LI-COR Biosciences
4647 Superior Street
Lincoln, Nebraska 68504
Phone: [phone]
Toll free: 800-447-3576 (U.S. and Canada)
[e-mail]
Regional Offices
LI-COR Biosciences GmbH
Siemensstraße 25A
61352 Bad Homburg
Germany
Phone: [phone]
[e-mail]
LI-COR Biosciences UK Ltd.
St. John’s Innovation Centre
Cowley Road
Cambridge
CB4 0WS
United Kingdom
Phone: [phone]
[e-mail]
LI-COR Distributor Network:
www.licor.com/env/distributors

NOTICE
The information contained in this document is subject to change without notice.
LI-COR® MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT
LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 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.
This document contains proprietary information which is protected by copyright. All rights are reserved. No part of this
document may be may be reproduced or translated into another language with prior written consent of LI-COR, Inc.
All other trademarks or registered trademarks are property of their respective owners.
© Copyright 2015, LI-COR, Inc.
CE Marking:
This product is a CE-marked product. For conformity information, contact LI-COR Support at [e-mail].
Outside of the U.S., contact your local sales office or distributor.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device
may not cause harmful interference, and (2) this device must accept any interference received, including interference that
may cause undesired operation.
Printing History
Publication Number: 984-15211
New editions of this manual will include all updates. An update addendum may be used between editions to provide up-
to-date information. Revisions are indicated by the revision number. Minor updates, which do not alter the meaning of
the content, will be incorporated without affecting the revision number.
Version
Number
Publication Date Changes
1 April 2015 First Edition
2 May 2015 Second Edition; Edited Troubleshooting section; Added quantum
response graphs; Corrected LI-191R weight and dimensions in
specifications.
3 July 2015 Added specifications for operating temperature and relative
humidity range.
4 November 2015 Removed specification for relative humidity range; Corrected wire
positioning in photo that shows how to connect a sensor to the
2420-BL Light Sensor Amplifier.
Build Date: Tuesday, April 17, 2018
ii

iii
Lead (Pb) Mercury (Hg) Cadmium (Cd)
Chromium VI
Compounds
(Cr6+)
Polybrominated
Biphenyls
(PBB)
Polybrominated
Diphenyl Ethers
(PBDE)
(Pb) (Hg) (Cd) (Cr6+) (PBB) (PBDE)
X O O O O O
X O O O O O
X: this component does contain this hazardous substance above the maximum concentration values in homogeneous materials
specified in the SJ/T 11363-2006 Industry Standard (Company can explain the technical reasons for the "X")
Hazardous Substances or Elements
Component Name
O: this component does not contain this hazardous substance above the maximum concentration values in homogeneous
materials specified in the SJ/T 11363-2006 Industry Standard.
,(6002-36311T/JS:X
)"X"
6002-36311T/JS:O
Doc. #53-15084 March 23, 2015
LI-190R-BL-x; LI-190R-BNC-x (x = 2, 5, 15, 50)
LI-190R-BL-x; LI-190R-BNC-x (x = 2, 5, 15, 50)
Quantum Sensor Head Assembly
Base and Cable Assembly
X O O O O O
X O O O O O
Lead (Pb) Mercury (Hg) Cadmium (Cd)
Chromium VI
Compounds
(Cr6+)
Polybrominated
Biphenyls
(PBB)
Polybrominated
Diphenyl Ethers
(PBDE)
(Pb) (Hg) (Cd) (Cr6+) (PBB) (PBDE)
X O O O O O
X O O O O O
X O O O O O
X: this component does contain this hazardous substance above the maximum concentration values in homogeneous materials
specified in the SJ/T 11363-2006 Industry Standard (Company can explain the technical reasons for the "X")
Hazardous Substances or Elements
Component Name
O: this component does not contain this hazardous substance above the maximum concentration values in homogeneous
materials specified in the SJ/T 11363-2006 Industry Standard.
,(6002-36311T/JS:X
)"X"
6002-36311T/JS:O
Doc. #53-15085 March 23, 2015
LI-190R-SMV-x (x = 2, 5, 15, 50)
LI-190R-SMV-x (x = 2, 5, 15, 50)
Quantum Sensor Head Assembly
Millivolt Adapter Assembly
Base and Cable Assembly
X O O O O O
X O O O O O
X O O O O O
Lead (Pb) Mercury (Hg) Cadmium (Cd)
Chromium VI
Compounds
(Cr6+)
Polybrominated
Biphenyls
(PBB)
Polybrominated
Diphenyl Ethers
(PBDE)
(Pb) (Hg) (Cd) (Cr6+)(PBB) (PBDE)
X O O O O O
X O O O O O
X: this component does contain this hazardous substance above the maximum concentration values in homogeneous materials
specified in the SJ/T 11363-2006 Industry Standard (Company can explain the technical reasons for the "X")
Hazardous Substances or Elements
Component Name
O: this component does not contain this hazardous substance above the maximum concentration values in homogeneous
materials specified in the SJ/T 11363-2006 Industry Standard.
X: o( ,
"X" o)
O: o
Doc. #53-15073-B
May 4, 2015
LI-191R-BNC-x (x = 2, 5)
LI-191R-BNC-x (x = 2, 5)
X O O O O O
X O O O O O
Line Quantum Sensor Head Assembly
Cable Assembly
Lead (Pb) Mercury (Hg) Cadmium (Cd)
Chromium VI
Compounds
(Cr6+)
Polybrominated
Biphenyls
(PBB)
Polybrominated
Diphenyl Ethers
(PBDE)
(Pb) (Hg) (Cd) (Cr6+)(PBB) (PBDE)
X O O O O O
X O O O O O
X O O O O O
X: this component does contain this hazardous substance above the maximum concentration values in homogeneous materials
specified in the SJ/T 11363-2006 Industry Standard (Company can explain the technical reasons for the "X")
Hazardous Substances or Elements
Component Name
O: this component does not contain this hazardous substance above the maximum concentration values in homogeneous
materials specified in the SJ/T 11363-2006 Industry Standard.
o
X: ( ,
"X" o)
O: o
Doc. #53-15192-A
May 4, 2015
LI-191R-SMV-x (x = 2, 5)
LI-191R-SMV-x (x = 2, 5)
Line Quantum Sensor Head Assembly
Cable Assembly
X O O O O O
X O O O O O
X O O O O O
Millivolt Adapter Assembly
Lead (Pb) Mercury (Hg) Cadmium (Cd)
Chromium VI
Compounds
(Cr6+)
Polybrominated
Biphenyls
(PBB)
Polybrominated
Diphenyl Ethers
(PBDE)
(Pb) (Hg) (Cd) (Cr6+) (PBB) (PBDE)
X O O O O O
X: this component does contain this hazardous substance above the maximum concentration values in homogeneous materials
specified in the SJ/T 11363-2006 Industry Standard (Company can explain the technical reasons for the "X")
Hazardous Substances or Elements
Component Name
O: this component does not contain this hazardous substance above the maximum concentration values in homogeneous
materials specified in the SJ/T 11363-2006 Industry Standard.
,(6002-36311T/JS:X
"X" o
6002-36311T/JS:O o
Doc. #53-14832 March 23, 2015
2420-BL
2420-BL
Amplifier Bare Lead Assembly X O O O O O
Lead (Pb) Mercury (Hg) Cadmium (Cd)
Chromium VI
Compounds
(Cr6+)
Polybrominated
Biphenyls
(PBB)
Polybrominated
Diphenyl Ethers
(PBDE)
(Pb) (Hg) (Cd) (Cr6+) (PBB) (PBDE)
X O O O O O
X: this component does contain this hazardous substance above the maximum concentration values in homogeneous materials
specified in the SJ/T 11363-2006 Industry Standard (Company can explain the technical reasons for the "X")
Hazardous Substances or Elements
Component Name
O: this component does not contain this hazardous substance above the maximum concentration values in homogeneous
materials specified in the SJ/T 11363-2006 Industry Standard.
,(6002-36311T/JS:X
"X" o
6002-36311T/JS:O o
Doc. #53-14833 March 23, 2015
2420-BNC
2420-BNC
Amplifier BNC Assembly X O O O O O

iv

v
Contents
Section 1. General Information
Comparing LI-COR® Radiation Sensors 1-2
Cable Options for the LI-190R 1-3
Cable Options for the LI-191R 1-4
Accessories 1-4
Configurations 1-5
Section 2. Using LI-COR Quantum Sensors
Mounting the LI-190R Quantum Sensor 2-1
Mounting the LI-191R Line Quantum Sensor 2-2
Calibration Constants and Multipliers 2-2
Using the LI-190R-BNC or LI-191R-BNC 2-4
Using the LI-190R-BL Quantum Sensor 2-5
Voltage Signal Options 2-6
Section 3. Connecting Millivolt Adapters
2290 Millivolt Adapter 3-1
LI-190R-SMV or LI-191R-SMV Quantum Sensor 3-2
Section 4. 2420 Light Sensor Amplifier
2420 Amplifier Gain Settings 4-2
Connecting to a Data Logger 4-4
Differential Wiring 4-5
Single-ended Wiring 4-5
Connecting a Sensor 4-6
Equation Summary 4-7
Output Voltage 4-7
Ideal Gain 4-7
Voltage Multiplier 4-7
2420 Amplifier Performance Characteristics 4-8

Section 5. Performance Characteristics
LI-190R Cosine Response 5-1
LI-191R Cosine Response 5-3
Quantum Spectral Response 5-4
Calibration 5-5
LI-190R Quantum Sensor Calibration 5-5
LI-191R Line Quantum Sensor Calibration 5-6
Section 6. Care and Maintenance
Factory Recalibration 6-2
Removing a Cable 6-2
Sensor Base Cover 6-3
Installing a Cable 6-3
Replacement Parts 6-4
LI-190R Replacement Parts 6-4
LI-191R Replacement Parts 6-4
Section 7. Troubleshooting
Sensor readings are negative (-) or zero 7-1
Sensor readings are incorrect 7-1
Appendix A. Specifications
Appendix B. Warranty
Appendix C. Index
vi

Section 1.
General Information
This manual provides basic operating instructions for the
LI-190R Quantum Sensor (right) and the LI-191R Line
Quantum Sensor and their accessories. LI-COR quantum
sensors measure photosynthetically active radiation (PAR)
with an enhanced silicon photodiode mounted under a cosine-
corrected acrylic diffuser. A custom spectral filter helps achieve
the desired spectral response.
The sensor output is a current (μA) signal that is directly proportional to hemi-
spherical PAR. A multiplier is used to convert the current signal into units of radi-
ation (µmol s-1 m-2).
Typical applications for the LI-190R include agriculture, greenhouses, growth
chambers, controlled laboratory conditions, and environmental research.
The LI-191R Line Quantum Sensor is designed to measure PAR in applications
where the radiation to be measured is spatially non-uniform, such as within plant
canopies. The LI-191R spatially averages incident radiation over the 1-meter length
of the diffuser, minimizing errors introduced by shadows and sunflecks. The incid-
ent radiation passes through the diffuser and is directed uniformly to a single sil-
icon photodiode.
1-1LI-190R and LI-191R Quantum Sensors

Section 1. General Information
Comparing LI-COR® Radiation Sensors
Each LI-COR radiation sensor is optimized for a particular application and meas-
urement type (Table 1-1 below). LI-192SA and LI-193SA sensors are submersible,
but they can also be used in the atmosphere. The LI-191R Line Quantum Sensor is
often used within plant canopies. LI-190R, LI-200R, and LI-210R sensors consist of
a sensor head attached to a removable base and cable assembly.
Sensor Measurement Units Waveband
LI-190R Quantum Sensor Photosynthetically active
radiation (PAR)
μmol s-1 m-2 400 to 700 nm
LI-191R Line Quantum
Sensor
LI-192SA Underwater
Quantum Sensor
LI-193SA Underwater
Spherical Quantum Sensor
LI-200R Pyranometer Global solar radiation W m-2 400 to 1100
nm
LI-210R Photometric
Sensor
Light as perceived by the
human eye
Lux or klux 450 to 650 nm
Table 1-1. LI-COR radiation sensors.
Figure 1-1. LI-COR radiation sensors.
1-2 LI-190R and LI-191R Quantum Sensors