Patent ID: 7060946
Filing Date: 2006-06-13
Classification: G05D

Abstract:
1. An analytical device comprising: a housing, an analyzing portion disposed in the housing for performing an analysis, a heat portion situated inside the housing for heating an interior of the housing, a first temperature sensor attached to the analyzing portion for measuring a first temperature of the analyzing portion, a second temperature sensor disposed in the housing for measuring a second temperature of the interior of the housing, and a control portion connected to the heat portion, the first temperature sensor, and the second temperature sensor for obtaining a second setting temperature through a first PID control based on a difference between the first measured temperature and a first setting temperature in the analyzing portion, said control portion controlling an output of the heat portion through a second PID control based on a difference between the second measured temperature and the second setting temperature, wherein said first PID control and second PID control are performed according to a first transfer function and a second transfer function, respectively.