Dimensional Measurement using Gauge Blocks and Pneumatic Displacement Gauge I — Lesson 1

This lesson covers the principles and applications of displacement and area measurement in fluid mechanics. It begins with a discussion on impedance matching, explaining its importance in understanding the effect of the measuring system on the physical variable being measured. The lesson then delves into the concept of displacement and area measurement, highlighting the use of pneumatic displacement gauges and gauge blocks. It emphasizes the need for periodic calibration of measuring instruments to avoid errors due to mechanical wear and deformation. The lesson concludes with an explanation of how to measure small distances using a pneumatic displacement gauge, treating air as an incompressible fluid.

Video Highlights

01:19 - Effect of the measuring system on the physical variable
16:33 - Introduction to displacement and area measurement
22:24 - Importance of periodic calibration of measuring instruments
28:27 - How to measure small distances using a pneumatic displacement gauge

Key Takeaways

- Impedance matching is crucial in understanding the effect of the measuring system on the physical variable being measured.
- Displacement and area measurement are important in both industrial and experimental applications.
- Pneumatic displacement gauges and gauge blocks are used for precise distance and area measurements.
- Accurate measuring instruments like micrometers should be calibrated periodically to avoid errors due to mechanical wear and deformation.
- In the pneumatic displacement gauge, air is treated as an incompressible fluid to measure small distances.