Abstract: A method for testing a measuring device is used to determine a permittivity of a frying fat which permittivity is inter alia dependent on the temperature, while taking into consideration the temperature. The method is characterized in that the permittivity is measured at least two different temperatures and the temperature dependence is determined and is used to make a statement on the ability to function of the measuring device.

Abstract: In a gas sensor with at least two electrodes and with a sensor body which is connected thereto and is composed of a gas-sensitive material, in addition to pores which may already be present, second cavities are provided in the sensor body. The second cavities may be suitable on account of their size to facilitate and accelerate the distribution of gas molecules in the sensor body and to thus improve the time response of the gas sensor.

Abstract: A method for testing a measuring device is used to determine a permittivity of a frying fat which permittivity is inter alia dependent on the temperature, while taking into consideration the temperature. The method is characterized in that the permittivity is measured at least two different temperatures and the temperature dependence is determined and is used to make a statement on the ability to function of the measuring device.

Abstract: For calibrating a humidity sensor, the latter is used to measure the relative humidity (U1, U2) at each of two known gas pressure values (P1, P2), likewise to be measured if necessary. At the same time, other ambient conditions are kept constant. A correction value for correction of the measured values of the humidity sensor to be subtracted from the latter is then obtained from the formula: k=((P1/P2)*U2?U1)/(P1/P2?1). The humidity sensor is thus capable of calibration without measurement of the actual humidity value.

Abstract: A system for the early detection of damage to and/or soiling of a capacitive sensor includes determining a degree by which the sensor is damaged and/or soiled by measuring a physical property of an electrode, e.g. the resistance of the electrode, or optically by means of the coefficient of reflection of the electrode surface of at least one electrode of the capacitive sensor. A capacitive sensor, according to the system described herein, may include components for provide the diagnostic function.

Abstract: A device for calibration of a humidity sensor with a measuring chamber includes a first gas connector for connection to a pressurizing unit and a second gas connection for connection to a further gas chamber. The first and/or the second gas connector may have a flow resistance which may be adjusted to two different fixed values.

Abstract: In a gas sensor with at least two electrodes and with a sensor body which is connected thereto and is composed of a gas-sensitive material, in addition to pores which may already be present, second cavities are provided in the sensor body The second cavities may be suitable on account of their size to facilitate and accelerate the distribution of gas molecules in the sensor body and to thus improve the time response of the gas sensor.

Abstract: A gas sensor has a condenser with a layered structure, including at least two electroconductive layers forming electrodes, at least one of the layers being at least partially permeable to the gas to be detected. A gas-sensitive layer produced by means of a sol-gel technique is arranged between the electrodes, the composition and structure of the layer being adapted to the gas to be detected and the desired measuring region. Further, a method is disclosed for producing such a gas sensor.

Abstract: A process module for a processing station (18) for performing a predetermined function. The module comprises a controller (60) associated with a program control unit (76; 76?) to which a program for controlling the process module is supplied. The controller (60) comprises a program data administrator unit (74) which co-ordinates the transfer of the program associated with the process module (30) out of a program data memory (72, 72?, 72?) into the program control unit (76, 76?). The invention also relates to a processing station with at least one such process module (30) for performing a predetermined function, as well as a method for starting up such a processing station.

Abstract: The invention relates to a portable refractometer comprising a depression (7) for samples, located on an insertion tip (11) in such a way that once the insertion tip (11) has penetrated a liquid or a fruit, a sufficient quantity of the sample liquid remains in the depression (7) for samples, thus wetting a measuring surface (4) that is delimited in said depression by a transparent body. The refractive index of the wetting liquid can be determined by measuring the intensity of an optical beam that is reflected by the measuring surface (4).

Abstract: For calibrating a moisture sensor (1), the latter is used to measure the relative moisture (U1, U2) at each of two known gas pressure values (P1, P2), likewise to be measured if necessary. At the same time, other ambient conditions are kept constant. A correction value for correction of the measured values of the moisture sensor to be subtracted from the latter is then obtained from the formula: k=((P1/P2)*U2−U1)/(P1/P2−1). The moisture sensor (1) is thus capable of calibration without measurement of the actual moisture value.

Abstract: The invention relates to a portable refractometer comprising a depression (7) for samples, located on an insertion tip (11) in such a way that once the insertion tip (11) has penetrated a liquid or a fruit, a sufficient quantity of the sample liquid remains in the depression (7) for samples, thus wetting a measuring surface (4) that is delimited in said depression by a transparent body. The refractive index of the wetting liquid can be determined by measuring the intensity of an optical beam that is reflected by the measuring surface (4).

Abstract: The invention relates to a process module for a processing station (18) for performing a predetermined function. The module comprises a controller (60) associated with a program control unit (76; 76′) to which a program for controlling the process module is supplied. The process module is characterised in that the controller (60) comprises a program data administrator unit (74) which co-ordinates the transfer of the program associated with the process module (30) out of a program data memory (72, 72′, 72″) into the program control unit (76, 76′). The invention also relates to a processing station with at least one such process module (30) for performing a predetermined function, as well as a method for starting up such a processing station.

Abstract: A conveyor comprises an endless, flexible conveying element, a drive unit for driving the conveying element, a deflecting unit for reversing direction of movement of the conveying element, and at least one tensioning device. The tensioning device includes a displaceable tensioning element engaging the conveying element, a tensioning spring biasing the tensioning element toward the conveying element, and a unidirectional blocking mechanism which blocks a displacing movement of the tensioning element in a direction opposite the effective direction of the tensioning spring for automatic readjustment of the conveying element while maintaining the possibility of the reversing operation. The blocking action of the blocking mechanism can be cancelled by an unlocking key, and the tensioning device can be slid back into a locking position to allow the disassembly of the conveying element.

Abstract: A linear unit for transferring objects, particularly for removing workpieces from a linear conveying track, comprising vertically and horizontally movable grippers for grasping the objects and comprising a gripper carriage which is movable between a pick-up position and delivery position and having first and second carriage parts, wherein the movement sequence of the grippers for receiving the objects in the pick-up position and for depositing the objects in the delivery position is effected due to relative movement of the second carriage part with respect to the first carriage part.