ALARM DEVICE BY WASHING LIQUOR DENSITY

摘要

PURPOSE: An alarm device by washing liquor density is provided to constantly maintain a washing liquor density and reduce a loss of work time using readjustment of washing liquor density. CONSTITUTION: The alarm device by washing liquor density comprises a density detector, a controller, and an alarm generator. In the alarm device by washing liquor density, the density detector is installed in a circulation line of washing liquor detects a washing liquor density. The controller determines a normal state for washing liquor density by a sensing signal from the density detector, and decides an output of alarm by the result of decision. The alarm generator outputs an alarm signal by the controller. The density detector is placed on circulation line which supplies the washing liquor to a bath. The density detector is placed on a rear part of filter, so the density detector detects a filtered washing liquor.