| This is a specialized form of Junkers Calorimeter used
to measure the energy obtained by burning gas. The cut below, from the
1917 instruction manual from the American Meter Company of New York, shows
the operation of the calorimeter.
The rate at which the gas is burned inside the calorimeter
is measured by the wet test meter in the lower picture on the left. Water
flows into the jacket around the combustion chamber at a steady rate, controlled
by the constant head device at the top. The mass of the water passing through
the apparatus as a function of time is determined with the bucket and scale
on the right. The temperature of the incoming water and that of the overflow
water is measured by the two thermometers.
This apparatus, including the wet
test meter (made by the Sargent Steam Manufacturing Company),
is at Kenyon College.