An adaptive control was proposed early by Na and No (1990) for the con
trol of the water level of steam generators. In this work the algorith
m of the controller is changed a little. In order to know if this cont
roller is robust in modeling errors and in high frequency measurement
noises in controlling the water level of steam generators, a scaled-do
wn steam generator is made which has the dimension of nearly one-tenth
of the reference height and pressure, and 1/10,000 of its power. The
controller is studied experimentally by implementing it to the mock-up
of a nuclear steam generator. It is known that the controller is robu
st in unmodelled dynamics.