Abstract: An electrical connector is to be connected to a mating connector. The electrical connector includes a plurality of terminals; a housing for holing the terminals in a terminal arrangement direction; and a guide member for guiding the mating connector. The housing includes a sidewall portion and an edge wall portion connected to the sidewall portion. The guide member includes a first attaching portion, a second attaching portion, and a connecting portion connecting the first attaching portion and the second attaching portion. The first attaching portion is attached to the sidewall portion. The second attaching portion is attached to the edge wall portion.

Abstract: An electrical connector is to be connected to a mating connector. The electrical connector includes a plurality of terminals; a housing for holing the terminals in a terminal arrangement direction; and a guide member for guiding the mating connector. The housing includes a sidewall portion and an edge wall portion connected to the sidewall portion. The guide member includes a first attaching portion, a second attaching portion, and a connecting portion connecting the first attaching portion and the second attaching portion. The first attaching portion is attached to the sidewall portion. The second attaching portion is attached to the edge wall portion.

Abstract: A filtration system is disclosed which operates with a single supply pump to achieve backwashing in an expeditious manner. The system includes a fluid supply source for a feed fluid to be filtered, a feed pump in fluid communication with the source and a membrane filter module for separating the fluid into filtrate and retentate streams. A collection reservoir is also provided which has at least two isolated fluid compartments movably separated from one another, one compartment for accumulating filtrate, the other being in fluid communication with the supply pump. In a preferred embodiment the collection reservoir is in the form of a diaphragm unit. At appropriate times, valves are activated to divert the flow of feed material from the supply source to the other chamber of the diaphragm unit.

Abstract: A measuring apparatus for measuring the number and size of impurities such as dust and bacteria in super-pure water includes a sealed container; a sample supply line which sealingly interconnects a source of super-pure water with the sealed container and supplies a sample mixture of super-pure water and electrolyte to the sealed container; an overflow pipe which sealingly connects with the side of the sealed container; a negative electrode which extends into the sample mixture in the sealed container; a hollow sensor which extends into the sample mixture in the sealed container, the hollow sensor containing a positive electrode surrounded by electrolyte and having a small hole at its lower end; and a detecting circuit connected to said negative and positive electrodes for supplying a certain DC current therebetween and detecting voltage pulses caused by impurities passing through the small hole into the hollow sensor.

Abstract: Apparatus for controlling an infinitesimal flow rate of fluid comprises at least one filter means (3, 3A, 3B, 3C, 3D, . . . ) provided in a fluid passage and capable of setting to a predetermined filtration amount, thereby regulating the flow rate of the fluid by controlling fluid supply to said filter means. The present apparatus may be used in a vacuum processing system.