Abstract: A duct probe (20) for sampling a fluid from a main fluid flow (Fm) in a duct (10) defines an elongated supply channel (21) n elongated discharge channel (22). The supply channel has at least one inflow opening (23) for diverting a partial flow (Fp) from the main fluid flow into the supply channel, and the discharge channel has at least one outflow opening for returning the partial flow from the discharge channel into the main fluid flow after it has passed an environmental sensor (30). The duct probe further comprises at least one compensation opening (26) that connects the supply channel and the discharge channel in a region that is located between their closed and open ends. By the presence of the compensation opening (26), a jet flow (Fj) is created, which acts to reduce a pressure difference between the supply channel and the discharge channel when the duct probe is exposed to the main fluid flow (Fm).

Abstract: The present invention relates to a sensor (1) for sensing organic carbon in a liquid (L), comprising: a container (2) having an interior space (20) for receiving the liquid (L), a photodetector (3), and a light source (4) configured to emit ultraviolet light (5) so that the ultraviolet light (5) travels along an optical path (P) through liquid (L) residing in the interior space (20) and is absorbable by carbon bonds of organic molecules in the liquid (L).

Abstract: In a method of determining a flow rate of a flow of a fluid of interest in a fluidic system, a raw flow rate signal (Qsensor) is determined using a flow rate sensor. The raw flow rate signal is corrected using a flow rate correction function (?) to obtain a corrected flow rate signal (Qsensor,corr). The flow rate correction compensates for a flow rate signal error that is caused by integration of the flow rate sensor into the fluidic system. It is based on a reference correction function (?) that is indicative of a flow rate signal error for a flow of a reference fluid due to the integration of the flow rate sensor into the fluidic system.

Abstract: A thermal sensor device serves for determining a concentration of a target gas in a gas sample that further comprises a disturbance gas. The thermal sensor device comprises first and second measurement structures (1, 2) comprising first and second temperature sensors (TS1, TS2) and a heater element (31) operable to cause heat transfer to the measurement structures through the gas sample. Processing circuitry provides heating power (P3) to the heater element and derives an output signal (S) based on a response of the temperature sensors to the heating power, the output signal being indicative of a concentration of the target gas in the gas sample. The first and second measurement structures have different heat dissipation capabilities, and the processing circuitry derives the output signal from a weighted difference of temperature signals from the first and second temperature sensors.

Abstract: The disclosure concerns a sensor device for determining the thermal capacity of a natural gas. The sensor device comprises a substrate, a recess or opening arranged in the substrate, a first heating component and a first sensing component. The first heating component comprises a first heating structure and a temperature sensor and the first sensing component comprises a temperature sensor. The sensor device is configured to measure the thermal conductivity of the natural gas at a first measuring temperature and at a second measuring temperature. The sensor device is configured to determine a first, in particular a constant, and a second, in particular a linear temperature coefficient of a temperature dependency function of the thermal conductivity and to determine the thermal capacity of the natural gas based on a fitting function. The fitting function is dependent on the first and the second temperature coefficient.

Abstract: The present invention relates to a sensor (1) for sensing organic carbon in a liquid (L), comprising: a container (2) having an interior space (20) for receiving the liquid (L), a photodetector (3), and a light source (4) configured to emit ultraviolet light (5) so that the ultraviolet light (5) travels along an optical path (P) through liquid (L) residing in the interior space (20) and is absorbable by carbon bonds of organic molecules in the liquid (L).

Abstract: A duct probe (20) for sampling a fluid from a main fluid flow (Fm) in a duct (10) defines an elongated supply channel (21) n elongated discharge channel (22). The supply channel has at least one inflow opening (23) for diverting a partial flow (Fp) from the main fluid flow into the supply channel, and the discharge channel has at least one outflow opening for returning the partial flow from the discharge channel into the main fluid flow after it has passed an environmental sensor (30). The duct probe further comprises at least one compensation opening (26) that connects the supply channel and the discharge channel in a region that is located between their closed and open ends. By the presence of the compensation opening (26), a jet flow (Fj) is created, which acts to reduce a pressure difference between the supply channel and the discharge channel when the duct probe is exposed to the main fluid flow (Fm).

Abstract: The disclosure concerns a sensor device for determining the thermal capacity of a natural gas. The sensor device comprises a substrate, a recess or opening arranged in the substrate, a first heating component and a first sensing component. The first heating component comprises a first heating structure and a temperature sensor and the first sensing component comprises a temperature sensor. The sensor device is configured to measure the thermal conductivity of the natural gas at a first measuring temperature and at a second measuring temperature. The sensor device is configured to determine a first, in particular a constant, and a second, in particular a linear temperature coefficient of a temperature dependency function of the thermal conductivity and to determine the thermal capacity of the natural gas based on a fitting function. The fitting function is dependent on the first and the second temperature coefficient.

Abstract: The sensor device comprises a hotplate on a membrane. The hotplate is heated by a N-fold rotationally symmetric heater structure having N>1 heater elements of identical design. Each heater element comprises an inner section, an intermediate section and an outer section arranged in series, with the inner section having a larger electrical cross section than the outer section. This design allows to heat the hotplate to a homogeneous temperature at moderate supply voltages.

Abstract: The sensor device comprises a hotplate on a membrane. The hotplate is heated by a N-fold rotationally symmetric heater structure having N>1 heater elements of identical design. Each heater element comprises an inner section, an intermediate section and an outer section arranged in series, with the inner section having a larger electrical cross section than the outer section. This design allows to heat the hotplate to a homogeneous temperature at moderate supply voltages.