Related Manuals for Campbell CS505
Summary of Contents for Campbell CS505
- Page 1 CS505 Fuel Moisture Sensor Revision: 5/08 C o p y r i g h t © 1 9 9 8 - 2 0 0 8 C a m p b e l l S c i e n t i f i c ,...
- Page 2 Warranty and Assistance The CS505 FUEL MOISTURE 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...
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Page 3: Table Of Contents
Appendix A. Explanation of Experimental Data ......A-1 Figures 3-1. Exploded View of CS505 and CS206 Mounting ........3 3-2. CS505 Installation Over Forest Floor, 30cm Over Duff Layer....3 A-1. Experimental Data Error-Distribution ..........A-1 Tables 4-1. Wiring for CS505 ..................4... -
Page 5: General Description
Because the complete dowel surface is accessible for moisture exchange, the response of the CS505 is similar to that of the traditional weighing racks. To optimize probe-to-probe repeatability and to allow probe interchangeability without individual calibration, two additional sorts are performed on the dowels before they are selected to be used as a sensor. -
Page 6: Installation
3. Installation As shown in Figure 3-1 and Figure 3-2, both the CS505 and CS205 install on the 10974 mounting stake. The probes install horizontally and should point south in the northern hemisphere and north in the southern. The rack is mounted above a representative forest-floor duff layer. -
Page 7: Cs505 Installation Over Forest Floor, 30Cm Over Duff Layer
The two upper pairs of holes are used to attach two tie wraps per cable—one pair for both the CS505 and CS205/107. FIGURE 3-1. Exploded View of CS505 and CS205 Mounting FIGURE 3-2. CS505 Installation Over Forest Floor, 30cm Over Duff Layer... -
Page 8: Wiring
Scientific’s Short Cut Program Builder software. You do not need to read this section to use Short Cut. The CS505 has a built in enable circuit. When voltage on the enable lead is less than 1.3 VDC, the sensor is off. When a voltage greater than 1.3 VDC, commonly 5 VDC, is applied to the enable lead, the sensor is on. -
Page 9: Cr10X Programming
5.1 CR10X Programming A program to measure a CS505 fuel moisture sensor using the Period Averaging instruction P27. P27 is the preferred measurement technique with a Campbell Scientific, Inc. datalogger. P27 is not an option in the 21X or CR7 datalogger. ;{CR10X} ;CR10X Program for CS505... -
Page 10: X Programming
CS505 Fuel Moisture Sensor 5.2 21X Programming A program to measure a CS505 fuel moisture sensor using the Pulse Count Instruction P3. The fuel moisture sensor is measured when flag 1 is set high. The measurement is made then flag 1 is set low. -
Page 11: Cr1000 Programming
Units FuelM=% Units PA_uS=uSec 'Define Data Tables DataTable(Table1,True,-1) DataInterval(0,60,Min,10) Sample(1,FuelM,FP2) Sample(1,PA_uS,FP2) EndTable 'Main Program BeginProg Scan(10,Sec,1,0) 'CS505 Fuel Moisture Sensor measurement FuelM and PA_uS: If IfTime(0,1,Hr) Then PortSet(1,1) PeriodAvg(PA_uS,1,mv2500,1,0,0,10,50,1,0) FuelM=PA_uS*0.001 FuelM=-220.14+(365.89*FuelM)+(-114.96*FuelM^2) PortSet(1,0) EndIf 'Call Data Tables and Store Data CallTable(Table1) NextScan... -
Page 12: Maintenance
CS505 Fuel Moisture Sensor 6. Maintenance The sensor element should be changed at least once a year with a new element in the spring. Since the characteristics of wood change so rapidly, more frequent replacements may be desirable. To change the sensor element, loosen the Phillips head screws and replace... -
Page 13: A. Explanation Of Experimental Data
Appendix A. Explanation of Experimental Data EXPERIMENTAL DATA ERROR DISTRIBUTION RMS ERROR 2.37% Error % WATER CONTENT RMS ERROR 2.21% (by weight) RMS ERROR 1.43% RMS ERROR 0.98% % WATER CONTENT (by weight) FIGURE A-1. Experimental Data Error-Distribution Experiments were conducted to characterize measurement error and to determine the calibration polynomial coefficients used to convert the output signal to percent moisture content. -
Page 14: A-1. Accuracies At Measurement Ranges
Appendix A. Explanation of Experimental Data The full scale range is broken into four sub ranges: 0-10, 10-20, 20-30, and 30-50 percent. The computed rms errors are shown in Table 1. For each range band an error band was determined in which more than 90 percent of all measurements fall (also shown in Table A-1 and Figure A-1). - Page 15 This is a blank page.
- Page 16 Campbell Scientific Companies Campbell Scientific, Inc. (CSI) 815 West 1800 North Logan, Utah 84321 UNITED STATES www.campbellsci.com info@campbellsci.com Campbell Scientific Africa Pty. Ltd. (CSAf) PO Box 2450 Somerset West 7129 SOUTH AFRICA www.csafrica.co.za cleroux@csafrica.co.za Campbell Scientific Australia Pty. Ltd. (CSA)