written 6.3 years ago by
h.p3576
• 220
|
modified 2.2 years ago
by
pedsangini276
• 4.7k
|
Subject:- Metrology and Quality Engineering
Topic:- Comparators
Difficulty:- Medium
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written 6.2 years ago by
h.p3576
• 220
|
Comparators:- There are certain devices in which the standards are separated from the instrument. It compares the unknown length with the standard. Such measurement is known as comparison measurement and the instrument, which provides such comparison, is called a comparator. Comparators are generally used for linear measurements, and various comparators available differ basically in the methods employed for amplifying and recording the variations measured.
Functional Requirements:- a. High degree of accuracy and precision b. The scale should be linear and have a wide range c. High amplification d. Good resolution e. Comparator should be versatile
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Uses of comparator:- 1. Laboratory Standards: to set the working or inspection gauges 2.Working Gauges To prevent the work spoilage and to maintain required tolerances 3. Final Inspection Gauges 4. Receiving Inspection Gauges 5. For checking newly purchased gauges