Abstract: The present invention provides for an electronic isolator device for application in intrinsically safe environments having isolation and safety functionality and comprising: an isolator module (101), a safety module (100), and wherein the isolator module is arranged for removable physical/electrical connection to the safety module in at least two orientations/configurations (DO, Dl, Al, AO) relative to the safety module, wherein the electrical connection to the safety module in each of the at least two orientations/configurations serves to configure the electrical functionality of the safety module (100).

Abstract: An electronic isolator device arranged for receiving field wiring from a field element includes a connector configured to receive a surge element for providing surge functionality to the electronic isolator device, and to provide surge protection to the connectivity by way of the field wiring. The connector is configured to connect the surge element to the electronic isolator device and to the field wiring. The connector is arranged for parallel connection of the surge element with respect to the field wiring such that the surge element can be connected and disconnected with the isolator device without disrupting the connection of the isolator device with the field elements.

Abstract: An electronic barrier device, includes an Isolating Barrier or a Zener Barrier, with a voltage limiter or voltage shunt such as at least one zener device for voltage limitation in a circuit during a fault condition. The barrier device includes a crowbar device arranged to latch across the at least one voltage shunt device to reduce power dissipation in the at least one voltage shunt device in the circuit fault condition. The crowbar device is arranged to latch responsive to a change in a current flowing in the barrier device.

Abstract: An electronic isolator device arranged for receiving field wiring from a field element includes a connector configured to receive a surge element for providing surge functionality to the electronic isolator device, and to provide surge protection to the connectivity by way of the field wiring. The connector is configured to connect the surge element to the electronic isolator device and to the field wiring. The connector is arranged for parallel connection of the surge element with respect to the field wiring such that the surge element can be connected and disconnected with the isolator device without disrupting the connection of the isolator device with the field elements.

Abstract: The present invention provides for an electronic isolator, or barrier, device arranged for receiving field wiring from a field element and further including connection means arranged to receive a surge element for providing surge functionality to the device, and to provide surge protection to the connectivity by way of the field wiring, the device arranged such that the surge element connects to the device and to the said field wiring by way of the said connection means so that operational connection/disconnection of the surge element to the device does not require disconnection of the field wiring from the device.

Abstract: The present invention provides for an electronic barrier device, which can form part of a further device such as an isolating barrier or a zener barrier, and comprising a voltage limiter such as at least one zener device for voltage limitation in a circuit during a fault condition, the barrier device including a crowbar device arranged to latch across the at least one zener device to reduce power dissipation in the at least one zener device in the circuit fault condition, wherein the crowbar device is arranged to latch responsive to a change in a current sensed in the barrier device.

Abstract: The present invention provides for a PCB transformer comprising a core and planar PCB winding, wherein the core has two legs extending from a table portion, and wherein a planar PCB winding extends around each of the said legs, and wherein the outer dimensions of the table portion in regions overlying the planar PCB windings match substantially the outer dimension of the planar PCB winding so as to achieve particularly efficient coupling between the winding and the core.

Abstract: An electronic barrier device includes an Isolating Barrier or a Zener Barrier with a voltage limiter or voltage shunt such as at least one zener device for voltage limitation in a circuit during a fault condition. The barrier device includes a crowbar device arranged to latch across the at least one voltage shunt device to reduce power dissipation in the at least one voltage shunt device in the circuit fault condition. The crowbar device is arranged to latch responsive to a change in a current flowing in the barrier device.

Abstract: The present invention provides for an electronic isolator device such as a universal isolator and having isolation and possible safety functionality and comprising an isolator module (550), and a base module (500), and wherein the isolator module is arranged for removable physical/electrical connection to the base module and in at least two orientations/positions relative to the base module, wherein electrical connection to the base module in each of the at least two orientations/positions serves to configure the type/functionality of the isolator device.

Abstract: The present invention provides for an improved network bus terminator (4), and related bus networks and bus network segments/trunks (1), and comprising a bus network terminator (4) including bus network termination functionality and a diagnostic analyzer (20) and wherein the degree of diagnostic functionality provided within the terminator (4) can then, as with the terminator itself, be provided as an inherent feature of the segment/trunk (1), and thus also the bus network, and can comprise limited, simple but suitably effective diagnostic functionality, and which can be inherently suited to bus analysis during a commissioning, and/or initial deployment, phase and be provided in a cost-effective manner.

Abstract: The invention provides for an electronic functional device such as an isolator/barrier for input/output process connection to a plurality of field devices possibly operating in a hazardous environment, the functional device having mounted there-to a disconnect element, such as a knife disconnect element, so as to be associated therewith and to provide disconnect functionality between the field devices and the isolator/barrier device, the mounting of the disconnect element at the isolator/barrier device also serving to provide further indication of the field device associated with the disconnect element.

Abstract: The present invention provides for an electronic isolator, or barrier, device arranged for receiving field wiring from a field element and further including connection means arranged to receive a surge element for providing surge functionality to the device, and to provide surge protection to the connectivity by way of the field wiring, the device arranged such that the surge element connects to the device and to the said field wiring by way of the said connection means so that operational connection/disconnection of the surge element to the device does not require disconnection of the field wiring from the device.

Abstract: The present invention provides for a PCB transformer comprising a core and planar PCB winding, wherein the core has two legs extending from a table portion, and wherein a planar PCB winding extends around each of the said legs, and wherein the outer dimensions of the table portion in regions overlying the planar PCB windings match substantially the outer dimension of the planar PCB winding so as to achieve particularly efficient coupling between the winding and the core.

Abstract: The present invention provides for an electronic isolator device for application in intrinsically safe environments having isolation and safety functionality and comprising: an isolator module (101), a safety module (100), and wherein the isolator module is arranged for removable physical/electrical connection to the safety module in at least two orientations/configurations (DO, Dl, Al, AO) relative to the safety module, wherein the electrical connection to the safety module in each of the at least two orientations/configurations serves to configure the electrical functionality of the safety module (100).

Abstract: The present invention provides for an electronic barrier device, which can form part of a further device such as an isolating barrier or a zener barrier, and comprising a voltage limiter such as at least one zener device for voltage limitation in a circuit during a fault condition, the barrier device including a crowbar device arranged to latch across the at least one zener device to reduce power dissipation in the at least one zener device in the circuit fault condition, wherein the crowbar device is arranged to latch responsive to a change in a current sensed in the barrier device.

Abstract: The present invention provides for an electronic isolator device such as a universal isolator and having isolation and possible safety functionality and comprising an isolator module (550), and a base module (500), and wherein the isolator module is arranged for removable physical/electrical connection to the base module and in at least two orientations/positions relative to the base module, wherein electrical connection to the base module in each of the at least two orientations/positions serves to configure the type/functionality of the isolator device.

Abstract: The present invention provides for an improved network bus terminator (4), and related bus networks and bus network segments/trunks (1), and comprising a bus network terminator (4) including bus network termination functionality and a diagnostic analyser (2) and wherein the degree of diagnostic functionality provided within the terminator (4) can then, as with the terminator itself, be provided as an inherent feature of the segment/trunk (1), and thus also the bus network, and can comprise limited, simple but suitably effective diagnostic functionality, and which can be inherently suited to bus analysis during a commissioning, and/or initial deployment, phase and be provided in a cost-effective manner.