DIN Temperature Transmitter Vibration and Surge Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
DIN-type temperature transmitters in industrial processes face challenges due to transient power surges and vibrations caused by vortex shedding in process fluids, which can damage sensitive electronics and disrupt signal communication.
Innovation Solution
A transient protector is integrated with the DIN-type temperature transmitter and sensor assembly, anchored to move with the transmitter, providing power conditioning and surge protection, while flexible fasteners and springs secure the sensor and transmitter to absorb vibrations, ensuring continuous operation and signal integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the temperature transmitter is rigidly mounted to the thermowell, then structural stability is improved, but vibration damage to electronics increases
Solution Approach 1:
The patent applies the dynamics principle by making the mounting system movable rather than rigid. The temperature transmitter is mounted on a movable plate that can move relative to the thermowell, allowing the assembly to dynamically respond to vibrations. This dynamic mounting approach enables the transmitter to move with the thermowell during vortex shedding events, preventing vibration-induced damage to electronic components while maintaining structural integrity.
2Object-affected harmful factors
If the transmitter is flexibly mounted to absorb vibrations, then vibration resistance is improved, but structural stability deteriorates
Solution Approach 1:
The movable plate creates a dynamic mounting system that allows controlled movement to absorb vibrations while maintaining structural stability. The plate can move relative to the thermowell to accommodate vortex shedding vibrations, yet maintains sufficient structural integrity to hold the transmitter securely in position during normal operation.
3Reliability
If transient power surge protection is added, then reliability against power surges is improved, but device complexity increases
Solution Approach 1:
The patent introduces a transient protector as an intermediary component between the power source and the temperature transmitter. This dedicated protection device intercepts and dissipates transient power surges before they reach the sensitive electronics of the transmitter, providing reliable surge protection while maintaining relatively simple system architecture through functional specialization.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively shields the transmitter electronics from power surges and maintains signal stability by allowing the assembly to move with the thermowell, preventing damage from vibrations and ensuring reliable temperature monitoring and communication.
Implementation Method 1
The transient protector is configured to condition power to the process transmitter
Implementation Method 2
flexible fasteners and springs secure the sensor and transmitter to absorb vibrations
Implementation Method 3
springs secure the sensor and transmitter to absorb vibrations
Implementation Method 4
The thermowell protects the temperature sensor from physical damage caused by direct contact with the process fluid, while efficiently conducting heat between the fluid and the temperature sensor
Implementation Method 5
Impingement of the thermowell on process flow creates turbulence in the process fluid via vortex shedding. This turbulence, in turn, contributes to vibration of both the thermowell and the sensor probe inside it
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
A process sensor assembly comprises a hollow protective housing, a temperature sensor, a process transmitter, and a transient protector. The temperature sensor includes a probe extending out of the hollow protective housing to a sensing location, and a top plate movably secured to the hollow protective housing so as to allow travel within the hollow protective housing with vibrations of the probe. The process transmitter is configured to process and transmit sensor signals from the temperature sensor, and is retained on the top plate to move with the temperature sensor within the hollow protective housing. The transient protector is configured to condition power for to the process transmitter, and is anchored to the process transmitter so as to move with the process transmitter within the hollow protective housing.