Abstract: A method and device for determining a piston or wheel position in a pneumatic drive and/or gripper system, comprising a wheel/piston arrangement which has a wheel and a piston coupled to the wheel. The method for determining a piston or wheel position in a pneumatic drive and/or gripper system may have a plurality of steps. In a first step, a defined system stimulus of the pneumatic drive and/or gripper system is triggered. In a further step, a system response of the pneumatic drive and/or gripper system is detected as a reaction to the defined system stimulus. Furthermore, it is provided that a parameter dataset is received. Furthermore, the piston or wheel position is determining by performing a position calculation prescription, on the basis of the detected system response, using the received parameter dataset and a comparison against the periodic, non-unique angle-of-rotation signal.

Abstract: A device and a method are provided for determining chlorine dioxide, especially in the presence of chlorine as a foreign gas. In the device the gas sample is exposed at first to a reagent for removing chlorine and subsequently to an indicator or to an electrochemical cell for the qualitative and/or quantitative determination of chlorine dioxide. The reagent for removing chlorine is or contains cyclohexylsulfamic acid and/or salts thereof. The device, through which flow can take place may be a test tube.

Abstract: A device and a method are provided for determining chlorine dioxide, especially in the presence of chlorine as a foreign gas. In the device the gas sample is exposed at first to a reagent for removing chlorine and subsequently to an indicator or to an electrochemical cell for the qualitative and/or quantitative determination of chlorine dioxide. The reagent for removing chlorine is or contains cyclohexylsulfamic acid and/or salts thereof. The device, through which flow can take place may be a test tube.

Abstract: A device for detecting sulfuryl fluoride, in which the gas specimen to be examined is subjected to pyrolysis with ensuing detection of a pyrolysis product, is to be improved for the sake of achieving a mobile, economical structure. To attain this object, in a preliminary tube (1) for pyrolysis, there is a chemical layer (5) of pyrophoric iron, and as an indicator system for the pyrolysis product, a test tube (2) for hydrogen fluoride is used.

Abstract: A hand lever fixture has a support body which can be attached to a handlebar, on which support body a hand lever and an over-center spring are pivotably mounted, said hand lever being effectively connected to a master cylinder and said over-center spring being effectively connected to the hand lever, which over-center spring, when the hand lever is in a position between a dead center position and an end position, generates a lever moment on the hand lever, said lever moment acting in the direction of the end position. The hand lever is split into a main lever which can be acted upon manually and an auxiliary lever pivotably mounted on the support body, at the end of which auxiliary lever the over-center spring is articulated while an auxiliary force resulting from the over-center spring lever moment can be transmitted to the master cylinder via its other end.

Abstract: A device for detecting sulfuryl fluoride, in which the gas specimen to be examined is subjected to pyrolysis with ensuing detection of a pyrolysis product, is to be improved for the sake of achieving a mobile, economical structure. To attain this object, in a preliminary tube (1) for pyrolysis, there is a chemical layer (5) of pyrophoric iron, and as an indicator system for the pyrolysis product, a test tube (2) for hydrogen fluoride is used.

Abstract: A method and a device for the hydraulic actuation of a clutch operatively connected to a clutch receiver cylinder (6), especially for automobiles, are disclosed, in which, in a servo circuit (S), a servo pressure is generated, whichserves for the hydraulic governing of a clutch transmitter cylinder (2), in order to generate in a pressure circuit (D) a working pressure, which is applied to the clutch receiver cylinder (6), oris applied directly to the clutch receiver cylinder (6), in order to create there a force required for disengaging the clutch. According to the invention, the servo pressure for disengaging and engaging the clutch is adjusted in defined manner in the servo circuit (S), for which purpose the servo circuit (S) comprises a proportional valve (8, 8'). As a result, with technical equipment at low cost, an automated actuation with improved response and operational behaviour of the clutch is made possible.