This post covers various aspects of dial indicators, including their types and uses, and also delves into the systems used in constructing comparator clocks.
What are the two types of dial indicators?
There are two primary types of dial indicators:
- Plunger Dial Indicator: This type features a plunger or spindle that moves perpendicularly to the object being measured. It measures linear displacement, typically used for checking variations in height, flatness, or for aligning machine components. The movement of the plunger is translated into the rotation of the dial, giving the user a precise reading.
- Lever Dial Indicator (Test Indicator): Unlike the plunger type, a lever dial indicator has a lever arm that pivots. The lever, attached at an angle, provides a more sensitive reading, making it suitable for measuring small deviations or surface irregularities. This type of indicator is commonly used for precision measurements in confined areas.
What are the types of dial indicators?
Dial indicators can be classified into several types based on their operation and usage:
- Balanced Reading Dial Indicator: Features a dial that is balanced at zero in the middle of the range, allowing measurement deviations in both directions (positive and negative).
- Continuous Dial Indicator: Displays readings that continuously increase from zero, often used for measuring in a specific direction without negative values.
- Revolution Counter Dial Indicator: Equipped with an additional counter or dial to keep track of the number of complete revolutions, enabling measurements over longer ranges.
- Digital Dial Indicator: Instead of an analog dial, it features a digital display that provides easy-to-read measurements, often with higher accuracy and additional functionalities like data storage.
What are the two types of clock?
There are two types of clock in the context of measurement tools:
- Mechanical Comparator Clock: This type relies on mechanical means, such as gears and springs, to magnify the movement and display it on the dial. It is durable, does not require power, and is often used in rough working conditions.
- Electronic Comparator Clock: This type uses electronic sensors to detect movement and then display the reading on a digital screen. It provides higher accuracy, the ability to store data, and features such as zeroing at any point.
What is a dial indicator?
A dial indicator is a precision measuring instrument used to measure small linear distances and deviations. It consists of a dial with a needle that indicates measurement values, often in thousandths of an inch or hundredths of a millimeter. The instrument amplifies small movements of the plunger or lever, providing an easy-to-read measurement. It is frequently used in mechanical engineering for alignment, tolerance checks, and ensuring components are machined within precise limits.
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What are the two systems used in the construction of comparator clocks?
Comparator clocks are constructed based on two different systems:
- Mechanical System: Utilizes gears, levers, and springs to amplify the movement detected by the plunger or lever and translate it into the dial’s reading. Mechanical systems are reliable and do not require electricity, making them ideal for use in a variety of environments.
- Electronic System: Uses electronic sensors and transducers to convert mechanical displacement into an electrical signal, which is then displayed digitally. This system offers higher precision and can incorporate additional functionalities like data logging and remote monitoring.
We hope this article helped you understand the different types of dial indicators, clocks, and the construction systems of comparator clocks. Feel free to refer back whenever you need a refresher on these important measuring tools.
