Abstract: The invention relates to a reactive single-component adhesive composition which is liquid at room temperature and which has 3 wt. % to 90 wt. % of at least one alpha-silane-terminated organic polymer, 0 wt. % to 80 wt. % of at least one silicone resin, 0.1 wt. % to 5 wt. % of at least one thermal accelerator, 0.001 wt. % to 5 wt. % of at least one low-molecular silane which has a primary or secondary amino group or a blocked amino group that is hydrogenated in order to form the primary or secondary amino group, and 0 wt. % to 85 wt. % of at least one filler. The invention additionally relates to a method for adhering two substrates using the aforementioned adhesive composition and to a system adhered in such a manner.

Abstract: A field device for process automation, including a current interface with which the field device can be connected onto a function unit in order to receive an interface current, further including a load circuit which is designed to provide a load circuit voltage on the basis of at least a part of the interface current. The load circuit includes a voltage limiter, the voltage limiter including a load which is designed as a controllable load or as a Z-diode and being designed to limit the load circuit voltage by way of a first electronic control element which is controlled by the load, and the load circuit further includes a longitudinal voltage stabiliser which is formed by way of the load and which is designed to provide a supply voltage on the basis of the load circuit voltage amid the use of the load.

Abstract: The present invention relates to reactive hotmelt adhesive compositions comprising, based on the total weight of the composition, a) 3 wt % to 49 wt % of at least one alpha-silane-terminated organic polymer; b) 1 wt % to less than 20 wt %, preferably 1 wt % to 10 wt %, of at least one acrylate resin-based polymer; c) 1 wt % to 20 wt %, preferably 1 wt % to 10 wt %, of at least one chemical compound which is liquid at least at 100° C. and in which at least at 150° C. the at least one acrylate resin-based polymer dissolves; d) 0.001 wt % to 5 wt %, preferably 0.001 wt % to 2 wt %, of at least one oligomeric silane comprising one or more amino groups. The invention additionally relates to processes for producing them and to a process for surface lamination using the composition.

Abstract: An apparatus for process automation for use in an area where there is a risk of explosion and in which dusts may occur, including a wall structure serving as a housing of the apparatus and having a first wall structure section defining a first housing inner area and a second wall structure section defining a second housing inner area separated from the first housing inner area, wherein a first circuit arrangement is arranged in the first housing inner area and the first housing inner area is dust-tightly enclosed by the first wall structure section so that the dusts cannot penetrate into the first housing inner area and the explosion safety of the first housing inner area is ensured by the dust-tight enclosure, one or more electrical circuits being arranged in the second housing inner area and all the electrical circuits arranged in the second inner area forming an altogether intrinsically safe second circuit arrangement.

Abstract: The invention relates to a reactive single-component adhesive composition which is liquid at room temperature and which has 3 wt. % to 90 wt. % of at least one alpha-silane-terminated organic polymer, 0 wt. % to 80 wt. % of at least one silicone resin, 0.1 wt. % to 5 wt. % of at least one thermal accelerator, 0.001 wt. % to 5 wt. % of at least one low-molecular silane which has a primary or secondary amino group or a blocked amino group that is hydrogenated in order to form the primary or secondary amino group, and 0 wt. % to 85 wt. % of at least one filler. The invention additionally relates to a method for adhering two substrates using the aforementioned adhesive composition and to a system adhered in such a manner.

Abstract: The present invention relates to reactive hotmelt adhesive compositions comprising, based on the total weight of the composition, a) 3 wt % to 49 wt % of at least one alpha-silane-terminated organic polymer; b) 1 wt % to less than 20 wt %, preferably 1 wt % to 10 wt %, of at least one acrylate resin-based polymer; c) 1 wt % to 20 wt %, preferably 1 wt % to 10 wt %, of at least one chemical compound which is liquid at least at 100° C. and in which at least at 150° C. the at least one acrylate resin-based polymer dissolves; d) 0.001 wt % to 5 wt %, preferably 0.001 wt % to 1 wt %, of at least one low molecular mass silane which comprises a primary or secondary amino group or a blocked amino group which hydrolyses to the primary or secondary amino group. The invention additionally relates to processes for producing them and to a process for surface lamination using the composition.

Abstract: A field device coupling apparatus for coupling a field device to a higher-level controller, including a current interface with a first interface connection point and a second interface connection point, with which interface connection points the field device coupling apparatus can be connected to the higher-level controller in order to receive an interface current, further including a load circuit connected between the first interface connection point and the second interface connection point, the load circuit including a controllable load and being adapted to provide a supply voltage for the field device using the controllable load based on the interface current, wherein the load circuit includes an AC negative feedback path, which runs from an output branch of the load circuit to an input terminal of the controllable load and serves to increase the AC impedance between the first interface connection point and the second interface connection point.

Abstract: An apparatus for process automation for use in an area where there is a risk of explosion and in which dusts may occur, including a wall structure serving as a housing of the apparatus and having a first wall structure section defining a first housing inner area and a second wall structure section defining a second housing inner area separated from the first housing inner area, wherein a first circuit arrangement is arranged in the first housing inner area and the first housing inner area is dust-tightly enclosed by the first wall structure section so that the dusts cannot penetrate into the first housing inner area and the explosion safety of the first housing inner area is ensured by the dust-tight enclosure, one or more electrical circuits being arranged in the second housing inner area and all the electrical circuits arranged in the second inner area forming an altogether intrinsically safe second circuit arrangement.

Abstract: A field device coupling apparatus for coupling a field device to a higher-level controller, including a current interface with a first interface connection point and a second interface connection point, with which interface connection points the field device coupling apparatus can be connected to the higher-level controller in order to receive an interface current, further including a load circuit connected between the first interface connection point and the second interface connection point, the load circuit including a controllable load and being adapted to provide a supply voltage for the field device using the controllable load based on the interface current, wherein the load circuit includes an AC negative feedback path, which runs from an output branch of the load circuit to an input terminal of the controllable load and serves to increase the AC impedance between the first interface connection point and the second interface connection point.

Abstract: Field-device coupling unit for providing a supply voltage for a field device and for communication with a superordinate control unit, the field-device coupling unit including a current interface, which is configured for communication with the control unit and has a first controllable input load which is configured to provide, from an interface current of the current interface, a load voltage on which the supply voltage is based, the field-device coupling unit further including a circuit arrangement for providing a communication signal which is to be transmitted to the control unit, wherein the circuit arrangement is configured to control the first controllable input load according to the communication signal in order to superimpose the interface current with a current signal corresponding to the communication signal.

Abstract: A communication device for a field device for transferring output information to a controller, including a passive digital output with a first connection point and a second connection point, a circuit arrangement connected between the first connection point and the second connection point, and a control device configured to selectively put the circuit arrangement into one of a plurality of switching states according to the output information to be transferred. The communication device is configured, in a state in which the passive digital output is connected to the controller, to provide an electric output signal with a first signal value according to a first communication protocol at the connection points in a first switching state of the circuit arrangement and to provide the electric output signal with a second signal value according to the first communication protocol at the connection points in a second switching state of the circuit arrangement.

Abstract: Field-device coupling unit for providing a supply voltage for a field device and for communication with a superordinate control unit, the field-device coupling unit including a current interface, which is configured for communication with the control unit and has a first controllable input load which is configured to provide, from an interface current of the current interface, a load voltage on which the supply voltage is based, the field-device coupling unit further including a circuit arrangement for providing a communication signal which is to be transmitted to the control unit, wherein the circuit arrangement is configured to control the first controllable input load according to the communication signal in order to superimpose the interface current with a current signal corresponding to the communication signal.

Abstract: A communication device for a field device for transferring output information to a controller, including a passive digital output with a first connection point and a second connection point, a circuit arrangement connected between the first connection point and the second connection point, and a control device configured to selectively put the circuit arrangement into one of a plurality of switching states according to the output information to be transferred. The communication device is configured, in a state in which the passive digital output is connected to the controller, to provide an electric output signal with a first signal value according to a first communication protocol at the connection points in a first switching state of the circuit arrangement and to provide the electric output signal with a second signal value according to the first communication protocol at the connection points in a second switching state of the circuit arrangement.