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Campbell CS505 Instruction Manual

Fuel moisture sensor
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CS505 FUEL MOISTURE SENSOR
INSTRUCTION MANUAL
6/98
COPYRIGHT (c) 1998 CAMPBELL SCIENTIFIC, INC.

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  • Page 1 CS505 FUEL MOISTURE SENSOR INSTRUCTION MANUAL 6/98 COPYRIGHT (c) 1998 CAMPBELL SCIENTIFIC, INC.

  • Page 2: Warranty And Assistance

    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 replacing (at CAMPBELL SCIENTIFIC, INC.'s...

  • Page 3: Cs505 Fuel Moisture Sensor

    The CS505 output is essentially a characteristics of the dowel. Because the square wave with an amplitude of ±2.5 VDC.

  • Page 4: Installation

    CS505 and floor duff layer. The stake is carefully CS205/107. FIGURE 1. Exploded View of CS505 and CS205 Mounting FIGURE 2. CS505 Installation Options Over Forest Floor, 30cm Over Duff Layer...
  • Page 5 Instruction P27 measures the period of the 5. PROGRAMMING output signal in microseconds. To prepare for The CS505 has a built in enable circuit. When the polynomial, the output is scaled by 0.001. A voltage on the enable lead is less than 1.3 second-order polynomial is used to convert VDC, the sensor is off.

  • Page 6: Cr10X Example Program

    CS505 FUEL MOISTURE SENSOR 5.1 CR10X EXAMPLE PROGRAM A program to measure a CS505 fuel moisture sensor using the Period Averaging instruction P27 of a CR10(X), CR500, or CR23X datalogger. P27 is the preferred measurement technique with a Campbell Scientific, Inc. datalogger. P27 is not an option in the 21X datalogger.

  • Page 7: Example Program

    CS505 FUEL MOISTURE SENSOR 5.2 21X EXAMPLE PROGRAM A program to measure a CS505 fuel moisture sensor using the Pulse Count Instruction P3 of a 21X, CR10(X), CR500, or CR23X. The fuel moisture sensor is measured when flag 1 is set high. The measurement is made then flag 1 is set low.

  • Page 8: Maintenance

    CS505 FUEL MOISTURE SENSOR 9: Polynomial (P55) Convert period to percent moisture content. Reps X Loc [ CS505mSec ] F(X) Loc [ fuelmoist ] -220.14 365.89 -114.96 Set flag 1 low 10: Do (P86) Set Flag 1 Low 11: End (P95) *Table 2 Program 0.0000...

  • Page 9: Appendix 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 point the sticks where rotated and measured by measurement error and to determine the each of the three electronic units.
  • Page 10 APPENDIX A. EXPLANATION OF EXPERIMENTAL DATA TABLE A-1. Accuracies at Measurement Ranges 90% of all range measurements rms error ±2% ±1% 0 to 10% ±3% ±1.5% 10 to 20% ±5% ±2.2% 20 to 30% ±6% ±3% 30 to 50% *At least ninety percent of all experimental data fall within these error bands at the noted range divisions.

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