Campbell Scientific LWS User Manual
LWS-L Dielectric
Leaf Wetness Sensor
Revision: 3/09
Copyright © 2008-2009
Campbell Scientific, Inc.
Warranty and Assistance
The LWS-L DIELECTRIC LEAF WETNESS SENSOR is warranted by
CAMPBELL SCIENTIFIC, INC. to be free from defects in materials and
workmanship under normal use and service for twelve (12) months from date
of shipment unless specified otherwise. Batteries have no warranty.
CAMPBELL SCIENTIFIC, INC.'s obligation under this warranty is limited to
repairing or replacing (at CAMPBELL SCIENTIFIC, INC.'s option) defective
products. The customer shall assume all costs of removing, reinstalling, and
shipping defective products to CAMPBELL SCIENTIFIC, INC. CAMPBELL
SCIENTIFIC, INC. will return such products by surface carrier prepaid. This
warranty shall not apply to any CAMPBELL SCIENTIFIC, INC. products
which have been subjected to modification, misuse, neglect, accidents of
nature, or shipping damage. This warranty is in lieu of all other warranties,
expressed or implied, including warranties of merchantability or fitness for a
particular purpose. CAMPBELL SCIENTIFIC, INC. is not liable for special,
indirect, incidental, or consequential damages.
Products may not be returned without prior authorization. The following
contact information is for US and International customers residing in countries
served by Campbell Scientific, Inc. directly. Affiliate companies handle
repairs for customers within their territories. Please visit
www.campbellsci.com to determine which Campbell Scientific company
serves your country. To obtain a Returned Materials Authorization (RMA),
contact CAMPBELL SCIENTIFIC, INC., phone (435) 753-2342. After an
applications engineer determines the nature of the problem, an RMA number
will be issued. Please write this number clearly on the outside of the shipping
container. CAMPBELL SCIENTIFIC's shipping address is:
CAMPBELL SCIENTIFIC, INC.
RMA#_____
815 West 1800 North
Logan, Utah 84321-1784
CAMPBELL SCIENTIFIC, INC. does not accept collect calls.
LWS-L Table of Contents
PDF viewers note: These page numbers refer to the printed version of this document. Use
the Adobe Acrobat® bookmarks tab for links to specific sections.
1. General Description.....................................................1
2. Specifications ..............................................................1
3. Installation....................................................................2
4. Wiring............................................................................3
5. Measurement................................................................3
6. Interpreting Data..........................................................3
7. Operational Principles.................................................4
7.1 Measurement.............................................................................................4
7.2 Leaf Mimicry............................................................................................5
8. Example Programs......................................................5
8.1 CR10X Datalogger Program.....................................................................5
8.2 CR1000 Datalogger Program ...................................................................6
9. Maintenance.................................................................6
Figures
1. LWS-L Dielectric Leaf Wetness Sensor.....................................................2
2. Top View of a Typical LWS-L Installation................................................2
3. Typical LWS-L Response...........................................................................4
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