Abstract: An instrument holder (1) which provides for the flexible holding of different instruments (3) within a housing (2). The instrument holder includes at least one spring clip (4-12) which contacts and/or acts upon the instrument (3) inserted in each case.

Abstract: A percussion instrument has at least one tone bar, retaining elements for fastening the tone bar, and at least one resonance body with upper and lower sides.

Abstract: The invention relates to a percussion instrument having at least two tone bars, each with an upper and lower side and at least one resonance box with at least one resonance body, wherein the resonance body consists of a neck and a resonance chamber.

Abstract: A tone bar of a percussion instrument and an associated connecting element are presented. A percussion instrument having at least one tone bar and at least one connecting element are also presented.

Abstract: The invention relates to a percussion instrument having at least two tone bars, each with an upper and lower side and at least one resonance box with at least one resonance body, wherein the resonance body consists of a neck and a resonance chamber.

Abstract: A tone bar of a percussion instrument and an associated connecting element are presented. A percussion instrument having at least one tone bar and at least one connecting element are also presented.

Abstract: A percussion instrument has at least one tone bar, retaining elements for fastening the tone bar, and at least one resonance body with upper and lower sides.

Abstract: Handpull musical instrument comprising housing parts for treble and bass connected by a bellows (1), associated sound and/or signal producing equipment and mechanical parts, and comprising a treble keyboard (4) installed in the treble housing (2) and a bass keyboard (5) installed in the bass housing (3), wherein the treble housing (2) is configured as an columnar hollow body (6) in angular design, which is open on the bellows side and opposite thereto comprises an opening (7) for receiving a treble cover (8), wherein the treble cover (8) is arranged so as to be aligned at an acute angle to an instrument central plane (M) between the two housing parts (2, 3), such that the treble housing (2) is tapered towards the instrument front face (V) and, thereby, the treble cover (8) is displaced towards the front and the treble cover (8) forms the treble keyboard (4).

Abstract: Handpull musical instrument comprising housing parts for treble and bass connected by a bellows (1), associated sound and/or signal producing equipment and mechanical parts, and comprising a treble keyboard (4) installed in the treble housing (2) and a bass keyboard (5) installed in the bass housing (3), wherein the treble housing (2) is configured as an columnar hollow body (6) in angular design, which is open on the bellows side and opposite thereto comprises an opening (7) for receiving a treble cover (8), wherein the treble cover (8) is arranged so as to be aligned at an acute angle to an instrument central plane (M) between the two housing parts (2, 3), such that the treble housing (2) is tapered towards the instrument front face (V) and, thereby, the treble cover (8) is displaced towards the front and the treble cover (8) forms the treble keyboard (4).

Abstract: For the automated adjustment of a heating system (2), there is produced between an exhaust-gas measuring device (1) and a control unit (26) a data connection (6) via which data, measurement values or control or setting signals for the adjustment of the heating system (2) are transmitted at least from the exhaust-gas measuring device (1) to the control unit (26). During the adjustment of the heating system (2), at least one exhaust-gas parameter is measured in automated fashion by way of at least one exhaust-gas sensor (4) of the exhaust-gas measuring device (1), and determined measurement values are automatically detected by the exhaust-gas measuring device (1). Then, a deviation of the determined measurement value from an exhaust-gas-parameter-specific and/or installation-specific setpoint value is determined, and in a manner dependent on the determined deviation, an automated adjustment of the heating system (2) is performed, said adjustment being initiated by the control unit (26) (cf. FIG. 1).

Abstract: A method for determining an NOx concentration in a measurement gas is provided, where a measurement value for the NOx concentration is determined from the sensor signal of a gas sensor and a measurement value for the concentration of a second component in the measurement gas is determined. A corrected value for the NOx in the measurement gas is determined from the measurement values, and the measurement value and the corrected measurement value for the NOx concentration are displayed and/or output.

Abstract: The invention relates to a method and a device for determining specific emissions as an exhaust gas characteristic of an internal combustion engine. Said method is characterized in that the exhaust gas mass flow (3) is determined as the first operating parameter and the engine power output (2) as the second operating parameter, the nitrous oxide mass flow (3) and the engine power output (2) are derived from a respective measured value that deviates from the operating parameter and the exhaust gas characteristic is calculated as a quotient from the corrected exhaust gas mass flow (3) and the engine power output (2).

Abstract: A method for determining an NOx concentration in a measurement gas is provided, where a measurement value for the NOx concentration is determined from the sensor signal of a gas sensor and a measurement value for the concentration of a second component in the measurement gas is determined. A corrected value for the NOx in the measurement gas is determined from the measurement values, and the measurement value and the corrected measurement value for the NOx concentration are displayed and/or output.

Abstract: The invention relates to a method and a device for determining specific emissions as an exhaust gas characteristic of an internal combustion engine. Said method is characterised in that the exhaust gas mass flow (3) is determined as the first operating parameter and the engine power output (2) as the second operating parameter, the nitrous oxide mass flow (3) and the engine power output (2) are derived from a respective measured value that deviates from the operating parameter and the exhaust gas characteristic is calculated as a quotient from the corrected exhaust gas mass flow (3) and the engine power output (2).

Abstract: A method and device, wherein the following steps are carried out: measurement or determination of waste gas concentration parameters, waste gas temperature, outside temperature, fuel power during a limited observation period; determination of the efficiency of the heating system in the area of observation over a period of time; determination of the average outside temperature in the area of observation; determination of heating performance produced in accordance with an average outside temperature on the basis of fuel power over a period of time and the efficiency of the heating system over a period of time in the area of observation; determination of maximum heating performance which is to be obtained in accordance with a minimum outside temperature from the average heating performance, minimum outside temperature, average inside temperature and average outside temperature in the area of observation; determination of the heat contact value of the heating system from the maximum heating performance and durati

Abstract: A method and device, wherein the following steps are carried out: measurement or determination of waste gas concentration parameters, waste gas temperature, outside temperature, fuel power during a limited observation period; determination of the efficiency of the heating system in the area of observation over a period of time; determination of the average outside temperature in the area of observation; determination of heating performance produced in accordance with an average outside temperature on the basis of fuel power over a period of time and the efficiency of the heating system over a period of time in the area of observation; determination of maximum heating performance which is to be obtained in accordance with a minimum outside temperature from the average heating performance, minimum outside temperature, average inside temperature and average outside temperature in the area of observation; determination of the heat contact value of the heating system from the maximum heating performance and durati