Modular Dual-Compartment Temperature Transmitter EMI Isolation
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Solution Overview
Problem
Consumers face challenges in selecting temperature transmitters that balance cost, robustness, and susceptibility to electromagnetic interference, as existing options are either costly and robust or less expensive but more susceptible to interference.
Innovation Solution
A modular dual-compartment temperature transmitter design that combines a dual-compartment housing with a head-mount electronics module, allowing for reduced cost while maintaining robustness and minimizing electromagnetic interference, using an adapter module to facilitate electrical connections and cold junction compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dual-compartment housing is used to isolate field wiring from measurement electronics, then robustness and immunity to electromagnetic interference are improved, but device complexity and cost increase
Solution Approach 1:
The housing is divided into two separate compartments: a first compartment for field wiring and a second compartment for measurement electronics. This segmentation physically isolates the two systems, providing robustness and electromagnetic interference immunity while maintaining a manageable device structure through clear functional separation.
2Object-affected harmful factors
If a dual-compartment housing with EMI filter is used, then immunity to electromagnetic interference is improved, but device complexity and cost increase
Solution Approach 1:
An electromagnetic interference filter is positioned between the first compartment (field wiring) and the second compartment (measurement electronics). This intermediary component blocks electromagnetic interference from reaching the sensitive measurement electronics while allowing necessary signal and power transmission, thus protecting against harmful factors without requiring complete isolation.
3Device complexity
If a head-mount electronics module is used, then device complexity and cost are reduced, but robustness and immunity to electromagnetic interference deteriorate
Solution Approach 1:
The housing is divided into two separate compartments: a first compartment for field wiring and a second compartment for measurement electronics. This segmentation physically isolates the two systems, providing robustness and electromagnetic interference immunity while maintaining a manageable device structure through clear functional separation.
4Device complexity
If a head-mount electronics module is used, then device complexity and cost are reduced, but immunity to electromagnetic interference worsens
Solution Approach 1:
An electromagnetic interference filter is positioned between the first compartment (field wiring) and the second compartment (measurement electronics). This intermediary component blocks electromagnetic interference from reaching the sensitive measurement electronics while allowing necessary signal and power transmission, thus protecting against harmful factors without requiring complete isolation.
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 provides a more robust and cost-effective temperature measurement solution that is less susceptible to electromagnetic interference, offering a compromise between traditional dual-compartment and head-mount transmitters.
Implementation Method 1
isolate the field wiring from the measurement electronics via an EMI (electromagnetic interference) filter positioned between the first and second compartments
Data Source
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AI summary
A temperature transmitter (100) includes a dual-compartment housing (112) and a head-mount temperature transmitter electronics module (120). The dual-compartment housing (112) has a first compartment (114) and a second compartment (110). The first compartment (114) is configured to receive field wiring at a terminal block through at least one conduit. The first (114) and second compartments (116) are separated except for an electrical feedthrough therebetween. A head-mount temperature transmitter electronics module (120) is disposed in the second compartment (116) and is operably coupled to the terminal block in the first compartment (114).