A moveable pressure tapping and separate thermocouple allow the pressure and temperature within the bed at any depth to be measured. An adjustable cylindrical heater with surface thermo couple and power meter can be immersed at any level in, or out of the bed to allow measurement of the local heat transfer coefficient.
A glass cylindrical chamber with an air distribution plate at the bottom end allows the granular material supplied to be fluidized by a controlled and measured air flow.