Campbell-scientific 237-L Leaf Wetness Sensor Manuel d'utilisateur

Model 237 Leaf Wetness SensorRevision: 7/10Copyright © 1988-2010Campbell Scientific, Inc.

Model 237 Leaf Wetness Sensor 7: Histogram (P75) 1: 1 Reps 2: 1 No. of Bins 3: 1 Closed Form 4: 2 Bin Select Value Loc [ Rs_kOhms

Model 237 Leaf Wetness Sensor 5.2 Plant Pathology Application Programming An exact range of measurements is impossible to give since the 237 is field

Model 237 Leaf Wetness Sensor 6. References 1 Gillespie, T.J. and Kidd, G.E. 1978. Sensing duration of leaf moisture retention using electrical imp

Campbell Scientific Companies Campbell Scientific, Inc. (CSI) 815 West 1800 North Logan, Utah 84321 UNITED STATES www.campbellsci.com • info@campbel

Warranty and Assistance The 237 LEAF WETNESS SENSOR is warranted by Campbell Scientific, Inc. to be free from defects in materials and workmanship und

237 Table of Contents PDF viewers note: These page numbers refer to the printed version of this document. Use the Adobe Acrobat® bookmarks tab for l

Model 237 Leaf Wetness Sensor 1. Introduction The 237 Leaf Wetness Sensor is a simple resistive grid configured in a 3-wire half-bridge. The circuit

Model 237 Leaf Wetness Sensor The black outer jacket of the cable is Santoprene® rubber. This compound was chosen for its resistance to temperature

Model 237 Leaf Wetness Sensor 3.3 Interpreting Resistance Values Table 3 lists 237 sensor resistance ranges and their interpretation. TABLE 3. 237 R

Model 237 Leaf Wetness Sensor 4. Programming Examples Each example program measures leaf wetness and outputs a sample resistance and a time fraction

Model 237 Leaf Wetness Sensor 'Check if Leaf wetness is below 150 kOhms transition and count as time dry If Rs_kohm < 150 AND Rs_kohm