Glass Feed-Through Vibronic Sensor Mounting
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Solution Overview
Problem
Existing mounting arrangements for vibronic sensors used in aggressive process media, such as corrosive media, are prone to partial dissolving of sensor elements and intrusion of the process medium into the sensor tubular shaft and tube volume, leading to potential leakage and safety issues.
Innovation Solution
A mounting arrangement that incorporates a vibronic sensor with a glass feed-through for signal lines, which is arranged within the flange opening and acts as a solid barrier to prevent corrosive media from escaping, even if the sensor or tubular shaft is damaged.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vibronic sensor is used in corrosive process media, then the sensor can perform limit level measurement, but the sensor elements may partially dissolve and process medium may intrude into the tubular shaft
Solution Approach 1:
A glass feed-through is introduced as an intermediary barrier between the corrosive process medium and the sensor elements. The glass feed-through is arranged in the flange opening to close off the path for corrosive media, preventing direct contact with the tubular shaft and sensor elements while still allowing signal transmission through the glass material.
2Reliability
If the flange opening is left open for signal line guidance, then signal transmission is enabled, but corrosive media can bypass the container wall through the opening
Solution Approach 1:
The glass feed-through serves multiple functions simultaneously: it acts as a barrier to prevent corrosive media intrusion, provides a pathway for signal lines to pass through, and maintains the structural integrity of the flange opening. This multi-functional component eliminates the need for separate sealing and signal transmission elements.
3Reliability
If the glass feed-through is arranged in the flange opening, then corrosive media intrusion is prevented, but the mounting arrangement requires additional components
Solution Approach 1:
The glass feed-through combines the sealing function and signal transmission function into a single integrated component. By merging these functions, the patent reduces the need for multiple separate components (such as separate seals, covers, and signal conduits) while achieving the same or better protective effect.
Data Source
AI summary
A mounting arrangement comprises a vibronic sensor and a flange having an opening for transmitting signals through the flange, wherein the vibronic sensor has a vibronic measuring sensor, especially an oscillatable unit, and a measuring transducer, which are arranged on different sides of the flange. The vibronic sensor has a glass feed-through for the signal line between the measuring sensor and the measuring transducer, and the glass feed-through is arranged at least in regions in the opening of the flange.