Abstract: The disclosure relates to a method for operating a field device of automation technology, comprising: establishing a wireless and/or wired communications link between the field device and an operating unit; establishing a communications link between an authentication card and the field device, using the operating unit, wherein at least the field device and the authentication card contain symmetric or asymmetric key information; and carrying out an at least unilateral authentication of the authentication card on the field device, as well as an operating unit for carrying out the method according to the invention.

Abstract: The application discloses a method for calibrating a temperature sensor located in a process of automation technology, wherein the calibration method comprises method steps as follows: specifying or ascertaining a temperature measuring range, which is passed through in the process of automation technology; specifying or ascertaining a reference temperature arising in the temperature measuring range; determining temperature measured values by means of the temperature sensor; detecting whether temperature measured values are at least approximately constant in the temperature measuring range during a specified time span; correcting the at least approximately constant, measured value of temperature in the temperature measuring range to the reference temperature.

Abstract: The present disclosure includes a method for authenticating a field device of automation technology with respect to a destination device. A telegram is created by the field device, which telegram includes a first data field and at least a second data field. The first data field includes information on the status of the field device and/or of the device components of the field device and/or information on the device parameterization/configuration, and a sequence counter or a time stamp. Security data are generated from the first data field via a cryptographic method, which security data are stored in the second data field. The telegram is transmitted from the field device to the destination device, wherein the destination device verifies the second data field as to authenticity or integrity upon receipt of the telegram, and wherein a first alarm is generated if the authenticity or the integrity of the second data field is not successfully verified.

Abstract: The invention relates to a method for authorized updating of first operating software of a field device which is used in an automation technology installation, wherein an authentication test of second operating software for the field device is performed, which second operating software is signed by means of a first private key associated with the installation, wherein, within the scope of the authentication test, the signature, generated by the first private key, of the second operating software is authenticated by means of a first public key associated with the installation, and wherein, in the event that the authentication test has been performed successfully, the first operating software located on the field device is at least partially replaced by the second operating software.

Abstract: The invention relates to a method for authorized updating of first operating software of a field device which is used in an automation technology installation, wherein an authentication test of second operating software for the field device is performed, which second operating software is signed by means of a first private key associated with the installation, wherein, within the scope of the authentication test, the signature, generated by the first private key, of the second operating software is authenticated by means of a first public key associated with the installation, and wherein, in the event that the authentication test has been performed successfully, the first operating software located on the field device is at least partially replaced by the second operating software.

Abstract: The disclosure relates to a method for operating a field device of automation technology, comprising: establishing a wireless and/or wired communications link between the field device and an operating unit; establishing a communications link between an authentication card and the field device, using the operating unit, wherein at least the field device and the authentication card contain symmetric or asymmetric key information; and carrying out an at least unilateral authentication of the authentication card on the field device, as well as an operating unit for carrying out the method according to the invention.

Abstract: The application discloses a method for calibrating a temperature sensor located in a process of automation technology, wherein the calibration method comprises method steps as follows: specifying or ascertaining a temperature measuring range, which is passed through in the process of automation technology; specifying or ascertaining a reference temperature arising in the temperature measuring range; determining temperature measured values by means of the temperature sensor; detecting whether temperature measured values are at least approximately constant in the temperature measuring range during a specified time span; correcting the at least approximately constant, measured value of temperature in the temperature measuring range to the reference temperature.

Abstract: The present disclosure includes a method for authenticating a field device of automation technology with respect to a destination device. A telegram is created by the field device, which telegram includes a first data field and at least a second data field. The first data field includes information on the status of the field device and/or of the device components of the field device and/or information on the device parameterization/configuration, and a sequence counter or a time stamp. Security data are generated from the first data field via a cryptographic method, which security data are stored in the second data field. The telegram is transmitted from the field device to the destination device, wherein the destination device verifies the second data field as to authenticity or integrity upon receipt of the telegram, and wherein a first alarm is generated if the authenticity or the integrity of the second data field is not successfully verified.

Abstract: A thermometer with protective tube inner part for insertion into a protective tube, especially a protective tube of a thermometer, wherein the protective tube inner part serves for arranging conductor elements, and wherein the protective tube inner part is matched to the shape of the inside of the protective tube in the region of a closed, protective tube end, and wherein the protective tube inner part serves to arrange the conductor elements on the side of the protective tube inner part facing the protective tube in the installed state.

Abstract: A temperature measuring insert composed of ceramic or sintered materials of magnesium oxide or aluminum oxide accomodates, on its end facing the measured medium, temperature sensor elements, such as thermocouples and temperature measuring resistors, as a measuring tip, installable singly or with others in metal or ceramic protective tubes. The site of the measuring tip, a water adsorption behavior differing from the remaining measuring insert material is present, in order to protect the temperature sensor elements in the case of rapid process related temperature changes, in order to prevent, in the case of heating, effects due to superheated steam.

Abstract: A temperature measuring apparatus comprising at least one measuring element, a jacket, in which the measuring element is arranged, wherein the measuring element includes a thermocouple, which is composed of at least two thermocouple wires connected with one another at a height of a measuring point along the longitudinal axis of the jacket. The thermocouple wires extend a first distance along the longitudinal axis of the jacket at least up to the measuring point, and wherein the measuring element includes, furthermore, at least two connection wires, which extend a second distance on the side of the measuring point lying opposite the thermocouple wires along the longitudinal axis of the jacket and are connected with the thermocouple wires, wherein the two connection wires are composed of a material, which differs from that of the thermocouple wires.

Abstract: The invention relates to a method for servicing and/or monitoring a field device (1) of process and automation technology. The invention includes that at least one photograph is taken of at least one section (2) of the field device (1), that the photograph is evaluated and/or processed in such a manner, that there results at least one piece of information concerning an access location (11) for field device data related to the field device (1), and/or information for identification of the field device (1), that a request for data is made to the access location (11), and that, in response to the request for data, field device data are supplied. Furthermore, the invention concerns a corresponding field device.

Abstract: A temperature measuring insert composed of ceramic or sintered materials of magnesium oxide or aluminum oxide accommodates, on its end facing the measured medium, temperature sensor elements, such as thermocouples and temperature measuring resistors, as a measuring tip, installable singly or with others in metal or ceramic protective tubes. The site of the measuring tip, a water adsorption behavior differing from the remaining measuring insert material is present, in order to protect the temperature sensor elements in the case of rapid process related temperature changes, in order to prevent, in the case of heating, effects due to superheated steam.

Abstract: A thermometer with protective tube inner part for insertion into a protective tube, especially a protective tube of a thermometer, wherein the protective tube inner part serves for arranging conductor elements, and wherein the protective tube inner part is matched to the shape of the inside of the protective tube in the region of a closed, protective tube end, and wherein the protective tube inner part serves to arrange the conductor elements on the side of the protective tube inner part facing the protective tube in the installed state.

Abstract: The invention relates to a method for servicing and/or monitoring a field device (1) of process and automation technology. The invention includes that at least one photograph is taken of at least one section (2) of the field device (1), that the photograph is evaluated and/or processed in such a manner, that there results at least one piece of information concerning an access location (11) for field device data related to the field device (1), and/or information for identification of the field device (1), that a request for data is made to the access location (11), and that, in response to the request for data, field device data are supplied. Furthermore, the invention concerns a corresponding field device.

Abstract: A chart recorder is disclosed which has n (n=1, 2, 3, . . . ) measuring channels, one for each of n measurement signals to be recorded, a printing device (5) which produces n isochromatic dot sequences (8) as curves each associated with one of the n measurement signals on a recording medium (4) moving past it, and 1 to n writing devices (9) for 1 to n different colors which overwrite or underwrite one or more of the dot sequences (8), at least in sections, with a continuous line (10) of another one of the n colors which follows the measurement signal of the respective channel, or a color-printing device (15) for 1 to n different colors which marks selected dots of each curve with dots (18) of another one of the n colors. Thus, the n dot sequences (8) are clearly distinguishable one from the other, particularly at curve intersections, and additional functions, such as alarm markings, can be realized.