Strain Gauge Based Balances; Electronic Pressure Gauges — Lesson 3

This lesson covers the detailed understanding of strain gauge based balances and electronic pressure sensors. It explains how strain gauges are positioned on balances for accurate measurements and discusses the concept of cross-coupling or interactions between different load components. The lesson also introduces electronic pressure gauges, explaining how they measure a wide range of pressures with good response. It further discusses the concept of a pressure scanner, which interfaces a single pressure transducer with multiple model pressure ports. The lesson concludes with a discussion on modern units with multiple pressure transducers, each connected to a specific model pressure port.

Video Highlights

01:27 - Discussion on the measurement of normal force, axial force, and pitching moment.
09:44 - Explanation of the concept of cross-coupling or interactions between different load components.
13:56 - Introduction to electronic pressure gauges and pressure transducers.
18:16 - Discussion on the use of diaphragms in pressure transducers.
22:33 - Explanation of the concept of a pressure scanner.
29:33 - Explanation of the functioning of a pressure transducer setup.

Key Takeaways

- Strain gauge based balances use summing circuits for moment measurement and differencing circuits for force measurement.
- In multi-component balances, the strain gauges need to be specially positioned for accurate measurement of a particular component.
- Electronic pressure gauges measure a wide range of pressures and have a good response time.
- Pressure scanners interface a single pressure transducer with multiple model pressure ports, allowing for efficient pressure measurement.
- Modern units house multiple pressure transducers, each connected to a specific model pressure port.