Abstract: A compressor is controlled by generating and storing a compressor operation log. In addition, a compressor operation is selected from the compressor operation log in response to a sensor failure. Furthermore, the compressor is modulated according to the selected compressor operation in response to the sensor failure.

Abstract: An attachment and release apparatus for attaching a rotor to a centrifuge drive assembly and for attaching a cover to the rotor. The apparatus includes a knob, a cover wherein the knob has a plunger disposed therein. The apparatus also includes an adapter having detents and a drive spindle having detents. In addition, the apparatus has at least one adapter moveable element retained within a passage located on the knob and least one drive spindle moveable element retained within an additional passage located on the knob. The apparatus also includes a biasing element disposed around one end of the plunger.

Abstract: A method and apparatus for a centrifuge energy management system prevents the energy level of a rotor from exceeding a predetermined containment limit for the centrifuge by monitoring the energy level and either terminating a run operation of the centrifuge if it surpasses the containment limit or reducing the rotational speed of the rotor.

Abstract: An electric motor system includes an electric motor, a temperature sensor mounted therein capable of measuring a local temperature and generating a temperature related signal, and a processor configured to calculate an actual temperature of a rotor magnet from the temperature related signal, and an actual output torque from the actual rotor magnet temperature. A method for determining the actual output torque of a motor includes sensing a temperature within the motor, calculating a rotor magnet temperature from the sensed temperature, and calculating the actual output mechanical torciue from the rotor magnet temperature.

Abstract: An incubation and storage device, in particular for specimens of organic material, is provided. Specifically, boundary surfaces of the inner space of the incubation and storage device are thermally connected to heat transfer elements that are attached on the outside of the device. The heat transfer elements have a liquid heat carrier circulating through them, where the heating and/or cooling of the inner space takes indirectly via the liquid heat carrier. Here a heater for heating and an evaporator for cooling the heat carrier are provided. The heat transfer elements can for example, be box shaped or designed as tubular coils. Through the use of a liquid heat carrier, the necessary temperature constancy inside the device is achieved.

Abstract: A rotor cover attach and release apparatus for a centrifuge includes a knob and a cover and housing affixed to the knob. The apparatus also includes an adapter connected to the housing and a plunger including an annular groove disposed within the knob and housing. The apparatus further includes a moveable element retained within a passage located on the housing and a biasing element located within the housing. The plunger is biased in one direction. By actuating the plunger in the opposite direction, the movable element may enter the annular groove, thereby releasing the cover from the rotor. When the plunger is not actuated, the movable element may contact the plunger and enter the passage, thereby attaching the cover to the rotor.

Abstract: A method and apparatus that provides supplemental heat from a heat source based upon the operating environment of a refrigeration or freezer. The supplemental heat is automatically controlled to provide heating to a sealing area to prevent condensation from forming.

Abstract: The invention concerns a climatic cabinet, in particular, a climatic cooling cabinet, whose interior is loaded or unloaded with specimen slides, with the aid of a transporting device. The loading and unloading take place through a loading opening which can be closed with a door, which opening is adapted, in its size, to the dimensions of the specimen slides and is located in a sidewall of the climatic cabinet. The climatic cabinet also has a gas supply device, whose at least one gas exhaust opening is situated in such a way that the cross-section of the loading opening is covered by a gas curtain, in the area of the gas exhaust openings when gas is supplied.

Abstract: A cooling circuit through which coolant flows, for use with a refrigerated cabinet. The cooling circuit includes a compressor and a condenser with a flow path extending there between. The cooling circuit also includes an evaporator and a second flow path that extends between the evaporator and the condenser. The cooling circuit additionally includes a suction accumulator and a flow path extending between the evaporator and the suction accumulator, while a fourth flow path extends between the suction accumulator and the compressor. The cooling circuit also includes a coolant bypass and a switch that switches the cooling circuit between a cycling mode and a non-cycling mode.

Abstract: A centrifuge having a motor shaft, a rotor that engages the motor shaft and a cover for securing the rotor to the rotor shaft. The cover has a knob with a coupling disposed therein. The coupling functions to simultaneously secure the rotor cover to the rotor body and the rotor body to the motor shaft.

Abstract: Methods and apparatus for a centrifuge control system, which are particularly suited for automatically calibrating a centrifuge imbalance detector that include an accelerometer and a controller. The controller is configured to automatically calibrate imbalance limits. Upon determining these limits, the controller assigns these limits or values to the accelerometer.

Abstract: The invention pertains to a safety cabinet with an interior enclosed by a housing and with a housing front comprising a working opening that can be closed with a height-adjustable front pane. The safety cabinet exhibits a fixed operating unit for controlling device functions that is integrated into the housing. A remote operating unit for controlling device functions that is spatially separated from the safety cabinet is also present. A receiver for receiving control signals emitted by the remote operating unit is also integrated into the safety cabinet. The remote operating unit not connected to the housing of the safety cabinet can be taken into the interior of the safety cabinet and removed from it by the operator without the necessity for the hands to touch nonsterile areas to operate the safety cabinet. Thereby the danger of contamination by entraining contaminants from the exterior into the interior is markedly reduced.

Abstract: A method and apparatus which provides a pressure sensor and/or temperature sensor connected to the low pressure side of a refrigeration system, or the discharge line of a scroll compressor. When the scroll compressor rotates backward, the change of pressure or temperature immediately sends a signal to work with a time-delay relay and a normally closed relay to immediately cut off the electrical power supply to the compressor. Thus, causing the scroll compressor to stop rotating in the undesirable direction.

Abstract: For humidifying a work space in a gas-fed incubator, water in a heatable pan in the floor area of an inner container surrounding the work space is evaporated with temperature-controlled heating of the interior until a predetermined temperature is reached, whereby a dynamic equilibrium state between condensation and evaporation in the inner container is achieved as long as there are no disturbances. If a door for access to the inner container is opened, the open time until it is closed is detected and a period, during which the pan containing water is heated, is determined depending on the open time of the inner container. Here, the period features only a heating phase with a running time if the open time is within a predetermined time interval. The period further includes a secondary heating phase with a second running time if the open time exceeds the time interval.

Abstract: An apparatus and method for notifying a user of a pending empty gas supply tank. The user can input the initial volume of the gas supply tank, a gas monitor can monitor the amount of gas that was injected into the chamber and an indicator can notify the user when the gas volume of the supply tank is at or below a predetermined level so that the user can take the appropriate action. Additionally, a gas volume converter can be included to convert from one volume unit to another.

Abstract: An attachment and release apparatus for attaching a rotor to a centrifuge drive assembly and for attaching a cover to the rotor. The apparatus includes a knob, a cover wherein the knob has a plunger disposed therein. The apparatus also includes an adapter having detents and a drive spindle having detents. In addition, the apparatus has at least one adapter moveable element retained within a passage located on the knob and least one drive spindle moveable element retained within an additional passage located on the knob. The apparatus also includes a biasing element disposed around one end of the plunger.

Abstract: The invention concerns a climatic cabinet with specimen storage places and a transporting device and a monitoring device for specimen slides. The invention also concerns a device and a method for the monitoring of a climatic cabinet. The monitoring device is designed, with respect to its form and outside dimensions, so that it can be transported by the transporting system and can be laid on one of the specimen storage places and can be removed from a specimen storage place. That has the advantage that the monitoring device can be moved to any place with the already present transporting device, wherein not only individual specimen slides but also specimen slide cassettes can be taken to their storage places and monitored, as well as stationary and movable storage devices in a position at rest and in operation, such as cassette carrier carousels, and parts of the transporting device itself.

Abstract: The invention pertains to a safety cabinet with an interior that is enclosed by a housing and a housing front side with a work opening that can be closed with a height-adjustable window. The safety cabinet contains an operating unit for controlling device functions which is integrated into the housing. The operating unit comprises at least one rocker button, the button assignment of which changes depending on the operating state of the safety cabinet in such a way that a certain device function can be controlled in the respective operating state by actuating a button of the rocker button.

Abstract: A dryer system for frost prevention in an ultra low temperature freezer includes a passive port coupled to an air dryer apparatus.