Abstract: The present invention regards a refiner plate segment (1) for a disc-type refiner apparatus (30), adapted to grind a saturated cellulosic material (M) in a refining gap (17) defined by opposed discs (20) during use of the apparatus (30), the material being moved from a refiner inlet opening (21) towards an outer edge (7) of the segment (1). The outer edge (7) of the segment (1) comprises a barrier arrangement (15) to increase the pressure in the refining gap (17) for retaining the liquid phase out to said outer edge (7). The present invention also regards a method of refining a saturated cellulosic material (M) in a refining gap (17) defined by two opposed discs (20) of a disc arrangement.

Abstract: The invention regards a measuring device, comprising a conductor body (7), for detecting the degree of fiber concentration and/or steam point (SP) of a fiber pad (33) being pulped, during use of the device (3), in a grinding gap (15) between refiner discs (11, 13) of a refiner (1). The conductor body (7) exhibits a first electric contact surface (17) adapted to provide electrical contact with a second electric contact surface (19) for transferring an electric current via the fiber pad (33) material. The invention also regards a method for detecting the degree of fiber concentration and/or steam point (SP) of a fiber pad (33). The method comprises the steps of mounting of the conductor body (7) to one of the refiner discs (13), grinding the fiber pad (33) material between the refiner discs (11, 13), detecting alteration of the conductivity and/or electrical resistivity of the fiber pad (33) material, and adjusting inflow of water and/or fiber material from said detected alteration.

Abstract: The invention shows s system (1) and a method for registering a collection of refuses from a refuse bin (19) to a refuse collection lorry (3). The refuse bin is provided with an information carrier (21) which is adapted to send information upon reception of an electromagnetic signal. An interrogator (9) and a registering unit (4) are provided on a holder (15), which is attachable to a person (23) who collects the refuse. The interrogator (9) is adapted to send an electromagnetic signal and to receive information from the information carrier (21). The registering unit (4) is connected to the interrogator (9) and is able to register information received from the interrogator (9).

Abstract: The invention relates to a sensor (6) for measuring the distance between a stator and a rotor, which sensor is of the magnetic type and has a sensor body (8) to which is attached a sensor tip (10), The tip of the sensor (10) is connected to the sensor body (8) by a fixing arrangement (14) that has a locking device (16) that interacts with engaging devices (24) and a spring arrangement (34). The locking device (16) is pressed towards an attaching position (A) by the action of a spring force F1 exerted by means of the spring arrangement (34) against the engaging device (24), fixing the sensor body (8) and the tip of the sensor (10) in relation to each other. By the application of a force F2 on the sensor body (8) that is greater than the spring force F1, it is possible to move the sensor body and the tip of the sensor to a releasing position (D), releasing them in relation to each other.

Abstract: A sensor device for measuring distance between a stator and a rotor in a machine is of the magnetic type and is intended to be mounted in the stator in order to interact with an opposing surface on the rotor. A sensor body (10) can be moved axially in a housing (11) mounted in the stator by means of an operating mechanism (13) and has a stop (16) at a predetermined distance (e) from its end surface designed to interact with a corresponding stop (17) inside the housing. This distance (e) exceeds the distance (d) between the stop (17) in the hosing and the end of the sensor body (10) by a predetermined distance (c) when the sensor body is in its normal measuring position. These stops (16, 17) make possible a particularly accurate calibration of the sensor device.

Abstract: A method for measuring the degree of fiber concentration in a pulp in a machine, in particular a refiner for the manufacture of paper pulp, which machine includes a stator and an opposing rotor, which form a grinding gap for the pulp. The stator is provided with at least one sensor device, designed to interact with a rotor surface and including an impedance meter body with a sensor surface which impedance meter body is mounted in the stator in such a way that it can move axially. Measurements of the impedance between the rotor surface and the sensor surface are carried out during an axial movement of the impedance meter body and the measured impedance differences are utilized together with the size of the movement to determine the dielectric constant of the pulp, from which the degree of fiber concentration in the pulp is dervived.