Abstract: An operating arrangement operates a sensor arrangement that includes at least one sensor (1.2). An installation phase is carried out for each sensor. An installation device generates at least one reference image of an installation location (Io.2) where the sensor is installed. A data set for the sensor is created in a central database, which includes each reference image. A subsequent search phase is carried out for at least one sensor. A search device (4) generates at least one search image (31.1, . . . , 31.4) of the surroundings of the search device. Each search image is compared with each stored reference image. The result of the image comparison is transmitted to the search device and is used by the search device to determine information (41.2) about the installation location of the sensor. The search device outputs the installation location information in a form that can be perceived by a human.

Abstract: An arrangement includes a gas measuring device (100) and an expansion module (20, 21). A process configures the gas measuring device. The gas measuring device includes a base part (1), a gas sensor, an evaluation unit and a reader (17). The gas sensor measures a detection variable that correlates with the concentration of a target gas. The evaluation unit determines the target gas concentration based on a detection variable measured value. The expansion module is detachably connectable to the base part and has an identifier stored in a data memory (19, 24) of the expansion module. With the expansion module connected to the base part, the reader reads the data memory without contacting the expansion module. Depending on a signal from the reader, the gas measuring device determines whether the expansion module is connected to the base part or not and if connected triggers a procedure.

Abstract: A process for operating a gas sensor (10), which process includes a calibration of the gas sensor (10). A test gas (16) is drawn in via a pump (12) coupled with the gas sensor (10), whereby the test gas (16) is supplied to the gas sensor (10). Different volume flows are generated by the pump (12) and respective volume flow-dependent measured values (26) are detected by the pump (12). The volume flow-dependent measured values (26) are recorded together with the respective volume flow. A sensor control unit and a computer program functioning as a control program (48) are provided to implement the process.

Abstract: A method and system for testing a pumping device (9) with a control unit (91) in a gas-measuring system (1). The pumping device (9) is tested with the control unit (91), which is configured to test readiness of the pumping device (9) to operate. An initialization data set and an operating data set are used for the testing. An indicator of readiness of the pumping device (9) to operate is determined based on this.

Abstract: A process for operating a gas sensor (10), which process includes a calibration of the gas sensor (10). A test gas (16) is drawn in via a pump (12) coupled with the gas sensor (10), whereby the test gas (16) is supplied to the gas sensor (10). Different volume flows are generated by the pump (12) and respective volume flow-dependent measured values (26) are detected by the pump (12). The volume flow-dependent measured values (26) are recorded together with the respective volume flow. A sensor control unit and a computer program functioning as a control program (48) are provided to implement the process.

Abstract: A method for testing a gas sensor is based on a gas-measuring system with a test gas source and with a pumping device. A predefined quantity of a gas or of a gas mixture is fed in, from the test gas source, to the gas sensor over a predefined time and metered. The response of a measured signal of the gas sensor is determined as a sensor response. Characteristic variables, from which an indicator of the ability of the gas sensor to operate is determined, are determined from the sensor response.

Abstract: A method and system for testing a pumping device (9) with a control unit (91) in a gas-measuring system (1). The pumping device (9) is tested with the control unit (91), which is configured to test readiness of the pumping device (9) to operate. An initialization data set and an operating data set are used for the testing. An indicator of readiness of the pumping device (9) to operate is determined based on this.

Abstract: A method for testing a gas sensor (5) is based on a gas-measuring system (1) with a test gas source (8) and with a pumping device (9). A predefined quantity of a gas or of a gas mixture is fed in, from the test gas source (8), to the gas sensor (5) over a predefined time and metered. The response of a measured signal (51) of the gas sensor is determined as a sensor response. Characteristic variables, from which an indicator of the ability of the gas sensor (5) to operate is determined, are determined from the sensor response.