Use Of Measuring Instruments And Type Of Instruments Pdf

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One of the tasks at planning of quality inspection is selection of measuring instruments. The measuring instruments are the most important part of the measuring process so their selection have to be done carefully. The selection of measuring instruments is a complex task, which depend on the size, the character and the value of measured magnitude.

Proper Care and Maintenance for a Measuring Tool

To browse Academia. Skip to main content. By using our site, you agree to our collection of information through the use of cookies. To learn more, view our Privacy Policy. Log In Sign Up. Download Free PDF. Measuring Instruments and Their Properties 2.

Basic classification of measuring instruments:. Mechanical instruments:- They are very reliable for static and stable conditions. The disadvantage is they are unable to respond rapidly to measurement of dynamic and transient conditions. Electrical instruments:- Electrical methods of indicating the output of detectors are more rapid than mechanical methods. The electrical system normally depends upon a mechanical meter movement as indicating device. Electronic instruments:- These instruments have very fast response.

Instrumentation

Roughness measurement examples. In contact-type instruments, the stylus top makes direct contact with the surface of a sample. The detector tip is equipped with a stylus, which traces the surface of the sample. The vertical motion of the stylus is electrically detected. The electrical signals go through an amplification and digital conversion process to be recorded. To precisely measure delicate shapes and roughness with a contact-type surface roughness tester, the radius of the stylus tip must be as small as possible with small contact pressure. A conical shape with a ballpoint tip is considered ideal for a stylus.

Roughness measurement examples. With contact-type surface roughness instruments, a stylus tip makes direct contact with the surface of a sample. The detector tip is equipped with a stylus tip, which traces the surface of the sample and electrically detects the vertial motion of the stylus. The electrical signals go through an amplification and digital conversion process to be recorded. To precisely measure delicate shapes and roughness with a contact-type surface roughness tester, the radius of the stylus tip must be as small as possible with low contact pressure. A conical shape with a ballpoint tip is considered ideal for a stylus.


Types of Measuring Instruments and their Uses in Engineering Workshop [PDF] · Length is measured in centimeter (cm) · Mass is measured in grams (gm) · Time is.


Measuring Instruments and Their Properties 2.1 Types of Measuring Instruments

Measurement , the process of associating numbers with physical quantities and phenomena. Measurement is fundamental to the sciences; to engineering , construction, and other technical fields; and to almost all everyday activities. For that reason the elements, conditions, limitations, and theoretical foundations of measurement have been much studied. See also measurement system for a comparison of different systems and the history of their development.

Here are some most commonly used mechanical instruments for measurement in industries. Learn all top instruments in our Mechanical Measuring Instruments online Course.

30+ Measuring Instruments for Mechanical Engineer

Here are 30 Measuring instruments for mechanical engineer. Every Mechanical Engineering student or employee should know about this. Vernier Caliper is a widely used linear measurement instrument with a least count of 0. It is used to measure linear dimensions like length, diameter, depth. The main scale and the Vernier scale that can slide along the main scale. Two types of measurement we can do, the first one is through the external jaw measure external dimensions and another one is internal jaw measure internal dimensions. It is used to check outside diameter of circle by the means of accuracy of 0.

The instrument used for measuring the physical and electrical quantities is known as the measuring instrument. The term measurement means the comparison between the two quantities of the same unit. The magnitude of one of the quantity is unknown, and it is compared with the predefined value. The result of the comparison obtained regarding numerical value. This instrument is suitable for measuring the static and stable condition because the instrument is unable to give the response to the dynamic condition. The electronic instrument has quick response time.

Measuring Instruments plays a vital role in the Engineering Workshop. The Instruments duty is to measure the given specimen according to the given dimensions. In the last class, we had discussed Angular Measurements and Linear Instruments in a detailed way. Before knowing the instruments, you need to know the units of measurement in both C. S and M.


These types of instruments are suitable for laboratory use. Example: Tangent galvanometer. Secondary instrument. This instrument determines the value of the.


01. Vernier Caliper

Some of these kinds of tools can be very sensitive, and slight variations in conditions can cause them to malfunction and deliver inaccurate results. Why is the proper care of measuring tools so important? Some of the benefits include the following. Every measuring tool has different maintenance needs, and you should receive guidelines in the user manual for each device you purchase. Storage is a critical element of measuring tool care, as these devices can spend significant amounts of time in cupboards or cabinets where they may get damaged.

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