摘要:
A cleaning method for a filter testing device (10) including switching devices (V1–V6), external connections (12, 14, 16, 18, 20) and internal volumes (24, 26, 28, 30, VV1–VV5) that can come into contact with a fluid from a filter device that is to be tested. The cleaning method involves the steps of: selecting one or more internal volumes (24, 26, 28, 30, VV1–VV5) to be cleaned, cleaning the selected internal volumes (24, 26, 28, 30, VV1–VV5) with a cleaning fluid by correspondingly switching the switching devices (V1–V6), and removing the cleaning fluid contained in the internal volumes (24, 26, 28, 30, VV1–VV5) from the internal volumes. Also a computer program product with program parts for implementing the method of the invention or a preferred embodiment thereof, and a filter testing device adapted to be cleaned by the method of the invention.
摘要:
A connector system (10) for producing a sterile connection includes a fluid conduit (32), an engagement device (14, 22) designed to engage with a complementary engagement device (16, 24) of a complementary connector (12), a displacement device (26) with a substantially plane displacement surface (30) and a fluid conduit aperture (60) which extends through the displacement surface (30) and is connected to the fluid conduit (32), with the displacement device (26) being designed to displace the connector (12) and the complementary connector (12) relative to one another in a displacement direction (40) after the engagement device (14, 22) has engaged with the complementary engagement device (16, 24), and with the displacement direction (40) being substantially parallel to the displacement surface (30), and a sterile cover device (20, 74) designed to cover at least the fluid conduit aperture (60) in a sterile manner. The invention also relates to a method of use of the connector system (10) and of the complementary connector (12) for sterile connection of a fluid inlet of the connector (10) to a fluid outlet of the complementary connector.
摘要:
Open-celled membranes from thermoplastic polymers are prepared from foamed polymer melts by extrusion through a die and particulary suitable for filtration.
摘要:
A force sensor with two force input elements to which a force to be measured and a support force are applied. The two force input elements are substantially rotationally symmetrical and are axially spaced apart, and the force to be measured and the support force are applied in radial directions. A spring element, arranged axially between the two force input elements connects these elements and its load-dependent deformation is converted into an electrical signal. A suppression of transverse forces is achieved in a purely mechanical manner so that the influence of transverse forces on the output signal of the force sensor are negligible. Both force input elements are additionally connected to each other by a guide element which encloses the spring element and which has two parallel guide connectors. The guide element is softer in the direction of the force to be measured than in a direction perpendicular thereto.
摘要:
In an electronic balance for loading having a balance scale (3) weighing system, display (19), control keyboard (21 to 26) and a digital processing electronic circuitry in which circuitry at least one memory is present for the weighed value shown in the display (19). A first additional key (25) is present in the control keyboard (21 to 26) upon the actuation of the key the weighed value shown in the display (19) and stored in the digital signal processing electronics is decreased and upon the first actuation of the key the weighed value displayed immediately previously is taken in addition into a first additional memory. Furthermore, a second additional key (24) is present in the control keyboard (21 to 26) upon whose actuation the weighed value displayed in the display (19) is taken into a second additional memory. By means of the decreasing key the balance operator can decreased the display from the too large actual value step-by-step to the correct theoretical value. Since the overload is generally only a few numerical steps of the balance display, this is achieved with a few steps. The balance can calculate the percentage overload by storing the balance display prior to the decreasing and during the conclusion of the decreasing and subsequently bring about the same overloading in the known manner for each of the remaining components. This creates the possibility even for simple loading balances without an electronic recipe memory of compensating an inadvertent overloading of a component by means of a overloading of the other components in equal percentage.
摘要:
A cleaning method for a filter testing device (10) including switching devices (V1-V6), external connections (12, 14, 16, 18, 20) and internal volumes (24, 26, 28, 30, VV1-VV5) that can come into contact with a fluid from a filter device that is to be tested. The cleaning method involves the steps of: selecting one or more internal volumes (24, 26, 28, 30, VV1-VV5) to be cleaned, cleaning the selected internal volumes (24, 26, 28, 30, VV1-VV5) with a cleaning fluid by correspondingly switching the switching devices (V1-V6), and removing the cleaning fluid contained in the internal volumes (24, 26, 28, 30, VV1-VV5) from the internal volumes. Also a computer program product with program parts for implementing the method of the invention or a preferred embodiment thereof, and a filter testing device adapted to be cleaned by the method of the invention.
摘要:
The present invention relates to a process which can be carried out continuously for the adsorption separation of substances in liquid media, in which process a flat adsorbent is loaded with an adsorbate by contacting the adsorbate-containing medium with the entire adsorbing outer surface of the adsorbent without forced flow through, and to an apparatus for carrying out the inventive process.
摘要:
A weighing sensor including a base (1) fixed to a housing, a load sensor (2) connected to the base in a displaceable manner via two arms (3, 4), a lever system (8 . . . 11) having at least one lever and transmitting the load acting on the load sensor to a transducer (12, 13), and a built-in calibration weight (40) which may be lowered onto a support region (30/38) for checking and/or calibrating the sensitivity of the weighing sensor. The support region is guided in a parallel manner by two additional arms (21, 22) and is connected to a lever (9/39) of the lever system (8 . . . 11) via a coupling element (26). Relatively large loads on the weighing sensor may be simulated with relatively small calibration weights, without the need for complicated lifting devices. The two additional arms (21, 22) are connected on the one hand to the support region (30/38) and on the other hand to the load sensor (2) and are located on the side of the load sensor (2) opposite from the lever system (8 . . . 11).
摘要:
A test device (10) for filter systems comprising at least two test units (14), a management unit (12) for managing and controlling the at least two test units (14), and signal links via a bi-directional or multi-directional network (16) between the management unit (12) and the at least two test units (14), particularly for transmitting test program instructions and test results. The invention further relates to a method for testing filter systems and a computer readable storage device with a computer program stored therein for testing filter systems.
摘要:
An electronic weighing sensor (10) having a digital signal processing unit (19), which includes at least one filter (12) with low-pass characteristic. By means of the filter (12), the direct-current component (m) is determined from the output signal of the weighing sensor and the weighing result is derived therefrom. A signal, which is dependent on the amplitude of the vibrations, is determined by the digital signal processing unit (19) and electronic components (18) change the direct-current component (m) as a function of the magnitude of the vibration-dependent signal. This significantly improves the performance of the weighing sensor (10) with respect to shocks and vibrations in the installation site of the weighing sensor (10).