Abstract: The invention relates to a diffuser, comprising a substantially cylindrical, vertical container, through which cellulose pulp is arranged to be transported, nozzle arms, for delivering a fluid, such as washing liquid, to the pulp, concentrically disposed screen surfaces and screen arms disposed on and connected to said screen surfaces for withdrawal of said fluid. The screen arms are provided, at their outer ends, with withdrawal pipes, directed substantially vertically downwards, which are slidably controlled and are connected in sealing arrangement to outlets for said fluid. The invention relates also to a stuffing box designed to receive a rod, preferably a pull rod for raising and lowering a screen pack having screen surfaces in a diffuser, said rod being guided in sealing arrangement and slidably through a fixture which is mounted in a bearing for free movement in a plane substantially perpendicular to said rod.

Abstract: This invention relates to an electricity meter mainly intended for measuring, registration and reading of one or more consumers' electricity power consumption and/or energy consumption. To the electricity meter a display (12) is connected which is adapted to indicate momentary power consumption, present electricity tariff and accumulated energy consumption expressed in monentary units. The electricity meter is an electronic construction and includes a central processing unit (1) with a microprocessor, one sensor(2) intended for detecting of a consumer's power consumption and a number of memory cells (1a-52d) adapted in a predetermined manner to consecutively receive and store information, calculated and transferred by the central processing unit (1). The electricity meter is also adapted to be connected to a read unit (5) by which stored information and electricity tariffs can be transferred to a central computer, located at, for example, an electrical power producer.

Abstract: A method for use in surface treatment systems for maintaining a desired fluid level in the process and rinse tanks. The invention uses a dryrunning-safe pump, inserted in the tank. An overflow for the tank serves as an intake leading to the suction side of this pump. The pressure side of the pump is connected to an outlet outside the tank.