摘要:
An apparatus forming a measuring device for ascertaining and monitoring a chemical or physical process variable in a high temperature process in a container, wherein the measuring device is formed from at least a sensor element located in the process and at least a measurement transmitter located outside the process. At least a first sealing element is provided for sealing against penetration of process medium into the sensor element. The sensor element has a boundary location between a first sensor element region, which faces the process and which is embodied with a high thermal resistance, and a second sensor element region, which faces away from the process and which has a low thermal resistance, and that the temperature sensitive element is arranged in the sensor element at the boundary location.
摘要:
A fill-level measuring device for ascertaining and monitoring fill level of a medium located in the process space of a container by means of a microwave travel time measuring method. The device comprises a measurement transmitter and an antenna unit, which is constructed at least of a hollow conductor and a radiating element A microwave transmissive, process isolating element is inserted for process isolation into the hollow conductor between the measurement transmitter and the horn shaped radiating element contacting the process space. The process isolating element is embodied as a hollow body having at least one tubular hollow body region matched to the shape of the hollow conductor, and a pointed hollow body region neighboring the hollow body region in the direction of the radiating element and having a wall thickness selected based on reflection, or lack thereof, of the microwave signals.
摘要:
The invention relates to an apparatus (1) for ascertaining and monitoring fill level (2) of a medium (3) in a container (4) by means of a travel-time measuring method of high-frequency measurement signals (6) with a horn antenna (7) having a waveguide section (8), a flared, horn section (9) and a cavity (11) filled, at least partially, with a dielectric filling body (12). Object of the invention is to provide a simple, temperature-stable, horn antenna filled with a dielectric material.
摘要:
The invention relates to an apparatus (1) for ascertaining and monitoring fill level (2) of a medium (3) in a container (4) by means of a travel-time measuring method of high-frequency measurement signals (6) with a horn antenna (7) having a waveguide section (8), a flared, horn section (9) and a cavity (11) filled, at least partially, with a dielectric filling body (12). Object of the invention is to provide a simple, temperature-stable, horn antenna filled with a dielectric material.
摘要:
In order to provide a microwave-conducting arrangement, which is relatively easy, and thus cost-favorable, to fabricate, and which is suited also for complex structures and geometries, one or more electrically conductive layers are provided which are applied on a non-conductive body having a surface of any shape. A metallizing provided for such purpose on the surface of the body is, for example, produced by a vapor-deposition process, by means of a flame-spraying process, or by means of a chemical metallizing.
摘要:
For optimizing couplings used until now, an arrangement is provided for a coupling of electromagnetic signals from a coaxial cable into a hollow conductor, in which an exciter pin is continued in the hollow conductor from a rear wall of the hollow conductor and is electrically conductively connected with a side wall of the hollow conductor.
摘要:
A fill-level measuring device for ascertaining and monitoring fill level of a medium located in the process space of a container by means of a microwave travel time measuring method. The device comprises a measurement transmitter and an antenna unit, which is constructed at least of a hollow conductor and a radiating element A microwave transmissive, process isolating element is inserted for process isolation into the hollow conductor between the measurement transmitter and the horn shaped radiating element contacting the process space. The process isolating element is embodied as a hollow body having at least one tubular hollow body region matched to the shape of the hollow conductor, and a pointed hollow body region neighboring the hollow body region in the direction of the radiating element and having a wall thickness selected based on reflection, or lack thereof, of the microwave signals,
摘要:
An apparatus forming a measuring device for ascertaining and monitoring a chemical or physical process variable in a high temperature process in a container, wherein the measuring device is formed from at least a sensor element located in the process and at least a measurement transmitter located outside the process. At least a first sealing element is provided for sealing against penetration of process medium into the sensor element. The sensor element has a boundary location between a first sensor element region, which faces the process and which is embodied with a high thermal resistance, and a second sensor element region, which faces away from the process and which has a low thermal resistance, and that the temperature sensitive element is arranged in the sensor element at the boundary location.
摘要:
A fill level measuring device for ascertaining and monitoring fill level of a medium in the process space of a container by means of a microwave travel time measuring method. The device includes: measurement transmitter; and an antenna unit, which is constructed at least of a hollow conductor and a radiating element, wherein a process isolation element is inserted into the hollow conductor for process isolation between measurement transmitter and the process contacting, radiating element. The process isolation element is made of a ceramic material and includes at least one glass layer, via which the process isolation element is directly glass bonded in the hollow conductor in a glass bonding region.
摘要:
A fill level measuring device for ascertaining and monitoring fill level of a medium in the process space of a container by means of a microwave travel time measuring method. The device includes: measurement transmitter; and an antenna unit, which is constructed at least of a hollow conductor and a radiating element, wherein a process isolation element is inserted into the hollow conductor for process isolation between measurement transmitter and the process contacting, radiating element. The process isolation element is made of a ceramic material and includes at least one glass layer, via which the process isolation element is directly glass bonded in the hollow conductor in a glass bonding region.