Patent ID: 6650119
Filing Date: 2003-11-18
Classification: C23G,G05D

Abstract:
An acid concentration measuring apparatus comprising:a body which is installed on a portion of a flow path of a pickling solution which is taken from a pickling tank, the flow path being connected to the pickling tank, wherein the body is cylindrical in shape and the inside of which comprises a portion of the flow path through which the pickling solution passes, and wherein an inner diameter of the cylindrical body is larger than an inner diameter of the other portion of the flow path, a density sensor which is installed in the body and, which measures the density of the pickling solution flowing within the body, a temperature sensor which is installed in the body and, which measures the temperature of the pickling solution flowing within the body, a conductivity sensor which is installed in the body, and which measures the conductivity of the pickling solution flowing within the body, and a calculating apparatus which calculates the acid concentration of the pickling solution flowing through the body based on the measurements by the density sensor, the temperature sensor, and the conductivity sensor.