Sensor Calibration Electronics With Tag Identification
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Solution Overview
Problem
Existing pH sensors require on-site calibration and adjustment, which is labor-intensive and prone to errors due to the need for multiple sensors and potential incorrect replacements, especially in industrial settings like sulfuric acid production.
Innovation Solution
A pH sensor design with evaluation electronics that allows for calibration and adjustment independently of its measurement location, using a TAG number for identification and storage of calibration data, ensuring accurate and efficient sensor deployment and replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors are calibrated and adjusted on-site at the measurement location, then the sensor delivers correct measured values, but the calibration process requires considerable effort and time
Solution Approach 1:
The patent applies preliminary action by performing calibration and adjustment of the sensor outside the measurement location before actual use. The sensor is calibrated in advance in a controlled environment, and all necessary calibration data is stored in the sensor's memory. This eliminates the need for time-consuming on-site calibration while ensuring the sensor is ready for immediate deployment at the measurement location.
2Productivity
If a large number of sensors are stored to ensure quick replacement, then replacement speed is improved, but the risk of installing incorrect sensor types increases
Solution Approach 1:
The patent implements feedback through an identification system that reads sensor type information from memory elements (such as EEPROM or RFID tags) and verifies compatibility between the sensor and the measurement location. The system provides immediate feedback by displaying whether the installed sensor is correct or incorrect, preventing wrong sensors from being used while maintaining a large inventory for quick replacement.
3Ease of manufacture
If sensors are calibrated at the measurement location, then calibration can be performed, but the process is labor-intensive and error-prone
Solution Approach 1:
The patent extracts the calibration process from the measurement location and performs it externally in a controlled environment. All calibration operations, adjustments, and data storage are completed before the sensor is deployed. This separation removes the complexity of on-site calibration equipment and procedures, making the sensor ready for simple installation without requiring skilled operators at the measurement location.
Data Source
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AI summary
The invention relates to a method for calibrating and/or adjusting a sensor (10), especially an electrochemical, electrophysical or optical sensor, the sensor (10) having evaluation electronics (12) that are configured in such a way that the signal generated by the sensor (10) cannot be substantially modified by a subsequent transmission. The sensor (10) is calibrated and/or adjusted at a point different from the later measuring point or the later measuring environment.