ASTM C177 Guarded Hot Plate Apparatus for thermal conductivity

[caatd]

I am trying to build a C177 guarded hot plate test to measure the thermal conductivity of various insulation materials. Does anyone have any hints on building a simple but precise unit (or know of a good site to reference)?

 

[Ron]

ASTM C1043 gives the design requirements for a guarded hot plate.

You might also check the following website. It gives a schematic of the GHP.

http://www.owlnet.rice.edu/~asteve/