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Experiments were conducted to
characterize measurement error
and to determine the calibra-
tion polynomial coe cients
used to convert the output
signal to percent moisture
content. The full scale range
is broken into four subranges:
0-10, 10-20, 20-30, and 30-50
percent. For each range band,
an error band was determined
in which more than 90 percent
of all measurements fall.
Copyright © 1999, 2009
Campbell Scientifi c, Inc.
Printed September 2009
CS205 10-Hour Fuel Temperature Stick
Material: Ponderosa Pine
Length: 4.5 inch (11.4 cm)
Diameter: 0.5 inch (1.3 cm)
Weight: 0.32 oz (9.07 g)
107 Temperature Probe
Sensor: -BetaTherm 100K6A1 Thermistor
Measurement Range: -35° to +50°C
Steinhart-Hart Equation
Error (CRBasic data-
loggers only): <±0.01°C over -35° to +50°C
Polynomial linearization
accuracy (Edlog data-
loggers only): Typically <±0.5°C over
-38° to +50°C range,
<±0.1°C over -24° to +48°C range
Interchangeability error: Typically <±0.2°C over
0° to 50°C range
Length: 4.1 inch (10.4 cm)
Diameter: <0.3 inch (0.5 cm)
Weight: 5 oz. with 10-foot cable
(136 g with 305 cm cable)
10824 10-Hour Fuel Moisture Sticks
Material: Ponderosa Pine
Diameter: 0.5 inch (1.3 cm)
Length: 8.4 inch (21.3 cm)
Weight: 0.1 lbs (45 g))
CS505 10-Hour Fuel Moisture Sensors
Operating Range: 0 to 70% moisture content
Fuel Moisture Accuracy:
range worst case rms error
0 to 10% ±2% ±1%
10 to 20% ±3% ±1.5%
20 to 30% ±5% ±2.2%
30 to 40% ±8% ±2.4%
40 to 70% ±12% (est.)
Power Supply: 9 to 18 Vdc
Enable Voltage: 1.3 to 20 Vdc
Current Use: 70 mA active;
10 μA quiescent
Output Signal: ±2.5 Vdc square wave with
an output frequency of
600 to 1500 Hz
Weight
Potted molding: 0.4 lbs (181 g)
Cable: 0.4 lbs per 10-foot length
(181 g per 305 cm)
Potted Molding
Dimensions: 2.8-inch x 4.3-inch x 0.9-inch
(7.1-cm x 10.9-cm x 2.3-cm)
Speci cations
(28 pages)
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