Abstract: A device for pumping a pulp suspension and simultaneous abduction of gas from the suspension. The device comprises at least one pulp pump (1) with a housing (2) with inlet (3) and, respectively. outlet (4) for the suspension and an outlet (5) for gas. The gas outlet (5) is connected via a pipe (7) to at least one external vacuum pump (8). The pipe (7) is formed with a substantially vertical portion, the highest point of which is located on a level above the pulp pump (1). A means (10) for the supply of flushing water to the pipe (7) is connected upwardlly in the vertical portion of the pipe (7).

Abstract: A method and system for monitoring moving parts relies upon a formatted surface of a moving part. The formatted surface includes an address pattern wherein a precise position relative to the address pattern can be determined from a portion of the address pattern. An electronic reading sensor detects a portion of the address pattern, and a processor uses the detected portion of the address pattern to determine a current position of the moving part.

Abstract: Centrifugal pumps are disclosed for pumping a pulp suspension including a housing, a rotary shaft mounted within the housing, an impeller including a hub and blades, a wheel disk mounting the blades and including openings for discharging gas generated in the pump, vacuum blades mounted on the hub behind the wheel disk, a vacuum housing enclosing the vacuum blades, the vacuum housing including an outer cylindrical wall which is radially displaced and eccentrically disposed with respect to the vacuum blades, the vacuum housing including a front wall and a rear wall separated from the vacuum blades by a gap, the rear wall being axially adjustable so that the gap between the vacuum blades and the rear wall can be adjusted to adjust the vacuum generated thereby, and a passageway for communication between the openings in the wheel disk and the suction opening.

Abstract: Apparatus is disclosed for pumping a pulp suspension including a housing and an impeller including a central hub, a wheel disk surrounding the central hub, and pump blades extending radially from the central hub along the wheel disk, which includes at least one opening for discharge of an entrained gas from the pump suspension, a vacuum pump at the rear face of the impeller, and vacuum pump blades mounted for rotation within the vacuum pump housing, which includes an outer wall which is eccentrically disposed with respect to the vacuum pump blade, and a rear wall which includes a suction port for receiving the entrained gas, and with the vacuum pump housing mounted adjacent to the central hub to provide a gap therebetween, so that vacuum pump housing is axially adjustable so that the gap can be altered by axial adjustment of the vacuum pump housing.

Abstract: In a device for monitoring measurement electrodes, attached to a patient in order to pick up physiological measurement signals, and a neutral electrode and associated leads at the same time as physiological measurement signals are picked up, each measurement electrode is connected to an input terminal on its associated measurement amplifier. A test signal generator is arranged to generate a pure AC signal, without any direct current component, across the neutral electrode attached to a patient during the pickup of measurement signals.

Abstract: In a device for monitoring measurement electrodes, attached to a patient in order to pick up physiological measurement signals, and a neutral electrode and associated leads at the same time as physiological measurement signals are picked up, each measurement electrode is connected to an input terminal on its associated measurement amplifier. A test signal generator is arranged to generate a pure AC signal, without any direct current component, across the neutral electrode attached to a patient during the pickup of measurement signals.

Abstract: Circuit arrangement for the processing of physiological measurement signals. In a known circuit arrangement, each one of a plurality of electrodes for picking up physiological measurement signals connects with a first input connection of an input amplifier associated with the pertinent electrodes; the input amplifiers connect, at their respective second input connections, with a common reference potential connection. To check the functional capability of the input amplifiers, a calibration pulse generator connects on the output side with one of the electrodes and the reference potential connection. In addition, to check the electrodes (1, 2, 3) and their supply lines, an additional amplifier (24) connects, by its input, with the reference potential connection (7) and, at its output, with an additional electrode (25) on the patient.