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Decagon Devices - KD2 Pro

Manufactured by  Decagon Devices
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The KD2 Pro is a fully portable field and lab thermal properties analyzer. It uses the transient line heat source...

The KD2 Pro is a fully portable field and lab thermal properties analyzer. It uses the transient line heat source method to measure thermal diffusivity, specific heat (heat capacity), thermal conductivity, and thermal resistivity. Sophisticated data analysis is based on 30+ years of research experience on heat and mass transfer in soils and other porous materials.
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Features of KD2 Pro

Excellent Accuracy   The compact KD2 Pro controller is much more than a simple readout for time and temperature. A proprietary algorithm fits time and temperature data with exponential integral functions using a nonlinear least squares method. This full mathematical solution delivers thermal resistivity to within ±10%.  

Corrects for Temperature Drift   Temperature changes of a thousandth of a degree per second–the sun warming the soil, for example, or someone walking into the lab-- destroy the accuracy of thermal properties calculations. Unlike other thermal needle systems, the KD2 Pro corrects for linear temperature drift that can account for large errors.  

Complies with ASTM, IEEE, SSSA Standards   For more information, see the support tab and the application note "The KD2 Thermal Properties Analyzer vs. Published Standards."

General Specifications

There are no General Specifications available.

Additional Specifications

Accuracy   
5% Specific Heat  
5% Thermal Conductivity/Resistivity  
10% Thermal Diffusivity  
Measurement Speed:   
1, 2, 5, & 10 min. read times (see user's manual for more information)  
Data Storage:   
4,095 readings, flash memory  
Compliance to Standards:   
IEEE Standard 442-1981 and ASTM Standard D5334-08  
Operating Environment of Sensors:   
-50 to 150°C  
Battery Source:   
4AA  
KD2 Pro Controller:   
Model KD2Pro-C  
Auto-Read Mode: Users can collect unattended data at user-defined intervals in the auto-read mode  
Type:   
Ultra low-power 16-bit microcontroller w/ 24-bit A/D converter  
Display:   
Liquid Crystal Display (LCD) 7.5 cm x 4 cm  
Case Dimensions:   
15.5 x 9.5 x 3.5 cm   
Calibration:  
Each KD2 Pro comes factory calibrated and includes performance verification standards  
Range of Measurements:   
K: 0.02 to 4 Wm-1 C-1  
D: 0.1 to 1.0 mm2s-1  
R: 0.25 to 50mC W-1  
C: 0.5 to 4 MJ m-3 C-1   
  
* Accuracy and measurement range vary with sensor type. See Comparisons tab.

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