Abstract: A signal transmission system with at least one signal encoder, a line, and a control and evaluation unit, wherein the signal encoder has an electronic unit and a power source, wherein the signal encoder feeds an imprinted current in the range between a preset first value and a preset second value into the line, in particular between 4 and 20 mA. The control and evaluation unit has a load and a microprocessor, and captures and evaluates a voltage that decreases via the load or a current that flows through the load. Additional information regarding the status of the components, can thus be captured and forwarded in a simple way, in that the load in the control and evaluation unit is connected in series to at least one electrical component at which a direct current appears when a current flows through the electrical component.

Abstract: A signal transmission system with at least one signal encoder, a line, and a control and evaluation unit, wherein the signal encoder has an electronic unit and a power source, wherein the signal encoder feeds an imprinted current in the range between a preset first value and a preset second value into the line, in particular between 4 and 20 mA. The control and evaluation unit has a load and a microprocessor, and captures and evaluates a voltage that decreases via the load or a current that flows through the load. Additional information regarding the status of the components, can thus be captured and forwarded in a simple way, in that the load in the control and evaluation unit is connected in series to at least one electrical component at which a direct current appears when a current flows through the electrical component.

Abstract: An optical analysis device that operates according to the principle of radiation absorption, has a housing (2) with at least one radiation-permeable housing element (3), at least one radiation source (4) having a reflector (5) associated with it, at least a first detector (6) and a second detector (7) as well as an external reflector (8) located outside the housing (2), wherein an absorption space is formed by the external reflector (8) and the radiation-permeable housing element (3), and a measuring beam (10) emitted by the radiation source (4) and the reflector (5) returns to the housing (2) again after being reflected by the external reflector (8), and wherein the external reflector (8) has at least one recess (12) that does not reflect the measuring beam and behind which a third detector is arranged for receiving the measuring beam.

Abstract: An optical analysis device that operates according to the principle of radiation absorption, has a housing (2) with at least one radiation-permeable housing element (3), at least one radiation source (4) having a reflector (5) associated with it, at least a first detector (6) and a second detector (7) as well as an external reflector (8) located outside the housing (2), wherein an absorption space is formed by the external reflector (8) and the radiation-permeable housing element (3), and a measuring beam (10) emitted by the radiation source (4) and the reflector (5) returns to the housing (2) again after being reflected by the external reflector (8), and wherein the external reflector (8) has at least one recess (12) that does not reflect the measuring beam and behind which a third detector is arranged for receiving the measuring beam.

Abstract: An optical analysis device having a gastight housing, a radiation-permeable housing element, at least a first radiation source and associated first reflector and a second radiation source and associated second reflector, at least first and second detectors, and an external reflector. The radiation sources and the detectors are located within the housing, an absorption space being formed between the external reflector and the radiation-permeable housing element. A measurement beam emitted by the first radiation source and the first reflector, after reflection on the external reflector, re-enters the housing. A reference beam is emitted by the second radiation source and the second reflector. The measurement beam, after crossing the absorption space, is guided from the measurement beam reflector directly onto the first detector and the second detector and the reference beam from the second radiation source is directly incident on the first detector and the second detector.

Abstract: An optical analysis device having a gastight housing, a radiation-permeable housing element, at least a first radiation source and associated first reflector and a second radiation source and associated second reflector, at least first and second detectors, and an external reflector. The radiation sources and the detectors are located within the housing, an absorption space being formed between the external reflector and the radiation-permeable housing element. A measurement beam emitted by the first radiation source and the first reflector, after reflection on the external reflector, re-enters the housing. A reference beam is emitted by the second radiation source and the second reflector. The measurement beam, after crossing the absorption space, is guided from the measurement beam reflector directly onto the first detector and the second detector and the reference beam from the second radiation source is directly incident on the first detector and the second detector.