AUTOMATIC MEASURING INSTRUMENT FOR ACID VALUE OF FLUX

摘要

PURPOSE:To provide a means for controlling concns. including a low concn. with high accuracy by setting a new device which makes measurement by using a chemical means adjusted to meet the properties of a flux. CONSTITUTION:The flux 20 to be measured is put into a container 11 for measurement. The device 1 is turned on and solenoid valves 14, 24, 28 are opened to supply a standard soln. 16 for titration, an alcohol solvent 23, and an indicator 32 into respective containers. A titration pump 26 is operated, the 21, 30 are operated by the signals via a CPU 41 and an I/O circuit 9, by which the liquid is titrated and supplied into a reaction chamber 2. This inspecting liquid 4 is thus stirred. The signal controlled by the CPU 41 lights 1 light source 36 by a light source lighting control circuit 44 to spectrally split this light; thereafter, the light is passed through a transparent widnow 3a, the inspecting liquid 4, etc., and is detected in a photoelectric converting element 33. The soln. 16 in the standard liquid container 20 for titration is supplied into the reaction chamber 2 in this stage. The absorbance is measured via a sensor amplifier 39, etc., and the change in this value is arithmetically processed by the CPU 41. The acid value of the flux is displayed on a display part 42.