Conductometer, PIRA#


(attachment photo showing the fully set up demonstration)


This demonstrations shows that the different materials have different thermal conductivity.

Conductometer set consists of a holder with brass and iron wire, two aluminum wires, two copper wires, two disks with a screw.



ID Number

Conductometer set

TD, A4, Shelf #1



Bee wax


Note: Make sure that one of the red & white gas cart are in placed and the gas hose is connected to the utility trench gas line. The gas cylinder that supplies the gas to utility trench gas line may or may not be connected/installed and should be inspected.

  1. Make sure that the conductometer has been assembled. If not, do the following.

- Place the bottom disk, which has the threaded center hole, on a flat surface with the groove face upward.

- Fit the brass and iron wire into the center grooves of the bottom disk, having approximately 3 inches of wire extending beyond end of the plate.

- Hold the two wires in place by pressing with one's fingers on the wires on each side of the disk. Locate the upper disk on top of the bottom disk, seeing that the grooves match. Thread the screw into disks partly so as to hold the wires in position and still allow space to slide the short wires into the outer grooves.

- Slide the aluminum wire into the grooves near the brass wire, loosening screw slightly if necessary. Repeat with copper wire locating it in grooves nearest iron wire.

- The disk may be located by sliding along the center wires so that the wire ends are approximately the same distance from the disk periphery. A length of about 3 inches will suffice. Tighten center screw after checking that each wire is located correctly in its respective groove.

Cautions, Warnings, or Safety Concerns:

  1. Beware of heated plate and wires.
  2. It may take time to assemble the conductometer.


attachment other photos

attachment other photos

attachment other photos

attachment other photos


  1. Instructions for assembly and use of No. 1651 Conductometer. SARGENT-WELCH SCIENTIFIC COMPANY

Heat and the First Law



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