ASME B89.1.14-2018 Calipers Overview
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Questions and Answers

What is the appropriate way to phrase a question for interpretation of a standard?

  • As a detailed technical analysis of engineering problems.
  • As a request for approval of a proprietary design.
  • As an informal query without background information.
  • As a request for general understanding and use. (correct)

Which of the following is NOT a requirement for submitting an inquiry?

  • Compose a condensed and precise question.
  • Include background information to assist the Committee.
  • Provide proprietary names and information. (correct)
  • Present proposed replies in 'Yes' or 'No' format.

What should the proposed replies in an interpretation request consist of?

  • A summary of the committee's thoughts.
  • Detailed explanations only.
  • A list of previously answered inquiries.
  • Short 'Yes' or 'No' responses along with explanations. (correct)

What happens if an inquiry is not formatted correctly?

<p>The original intent may be changed by the Committee. (B)</p> Signup and view all the answers

How can individuals attend Committee meetings or telephone conferences?

<p>By contacting the Secretary of the B89 Standards Committee. (B)</p> Signup and view all the answers

Which response indicates how ASME treats specific engineering problems?

<p>It does not provide consultancy for engineering issues. (A)</p> Signup and view all the answers

What can individuals do if they disagree with an interpretation provided by ASME?

<p>Submit an appeal to the cognizant ASME Committee or Subcommittee. (A)</p> Signup and view all the answers

What must be included in the background information for an inquiry?

<p>Plans or drawings applicable to the inquiry. (C)</p> Signup and view all the answers

What types of calipers does the Standard cover?

<p>Vernier, dial, electronic digital, and specialty calipers (C)</p> Signup and view all the answers

ISO 13385-1 provides which of the following?

<p>Metrological characteristics and design definitions (A)</p> Signup and view all the answers

What is the purpose of this Standard concerning ISO 13385-1?

<p>It provides supplementary information for users (D)</p> Signup and view all the answers

Which document outlines the evaluation of measurement data?

<p>JCGM 100:2008 (D)</p> Signup and view all the answers

What does this Standard ensure regarding the calibration of calipers?

<p>Enough detail for users to operate without ISO 13385-1 (A)</p> Signup and view all the answers

Which of the following is NOT included in the definitions applicable to this Standard?

<p>ISO 9001:2015 (A)</p> Signup and view all the answers

What is a key characteristic discussed in relation to calipers within this Standard?

<p>Design and metrological characteristics (A)</p> Signup and view all the answers

Which organization publishes the International vocabulary of metrology?

<p>Joint Committee for Guides in Metrology (JCGM) (C)</p> Signup and view all the answers

What is the nominal coefficient of thermal expansion (CTE) specified for calipers within the temperature range of 10°C to 30°C?

<p>(11.5 ± 1.0) × 10 − 6 /°C (B)</p> Signup and view all the answers

Which of the following errors is NOT listed as a metrological characteristic for calipers according to ISO 13385-1?

<p>Mechanical wear error (B)</p> Signup and view all the answers

What must be performed to obtain the error of indication for a caliper if testing is conducted at a temperature other than the rated operating condition?

<p>Temperature correction to 20°C (68°F) (C)</p> Signup and view all the answers

What is the default decision rule for determining the conformance of a caliper to specifications?

<p>4:1 acceptance in accordance with ASME B89.7.3.1 (D)</p> Signup and view all the answers

Which document provides guidance on evaluating measurement uncertainty for calipers?

<p>JCGM 100 (GUM) (B)</p> Signup and view all the answers

What consequence may occur if temperature corrections to 20°C (68°F) are not performed during calibration?

<p>Measurement uncertainties may be evaluated (A)</p> Signup and view all the answers

What do manufacturers need to state regarding metrological characteristics as per the specifications?

<p>Maximum permissible error (MPE) values (A)</p> Signup and view all the answers

Which of the following errors is specific to the distance between crossed knife edges?

<p>Error due to crossed knife-edge distance, K (C)</p> Signup and view all the answers

What action may ASME take regarding inquiries about interpretations of technical aspects of the Standard?

<p>They provide written replies to inquiries. (B)</p> Signup and view all the answers

Where can interpretations of the technical aspects of the Standard be published?

<p>On the Committee web page. (C)</p> Signup and view all the answers

What is the purpose of errata posted on the ASME website?

<p>To correct typographical or grammatical errors. (B)</p> Signup and view all the answers

What does ASME not do regarding patents associated with items in the Standard?

<p>They guarantee non-liability for infringement. (A)</p> Signup and view all the answers

How does ASME ensure diverse input for the proposed code or standard?

<p>Through public review and comment opportunities. (A)</p> Signup and view all the answers

What type of organization is ASME registered as?

<p>A professional engineering society (B)</p> Signup and view all the answers

What can individuals do to receive notifications about new errata postings?

<p>Automatically receive emails on specific Committee Pages. (B)</p> Signup and view all the answers

What kind of balance is ensured in the Standards Committee that approves codes or standards?

<p>Balance from competent and concerned interests. (D)</p> Signup and view all the answers

What must be included in a proposal for revisions to the Standard?

<p>Citing the paragraph number(s) (A)</p> Signup and view all the answers

What is required in a request for a Case?

<p>An identified Standard and paragraph number (A)</p> Signup and view all the answers

How can an Inquirer submit a request for an interpretation?

<p>Utilizing the online Interpretation Submittal Form (C)</p> Signup and view all the answers

What information should be included in the subject line of an interpretation request?

<p>The topic of inquiry and applicable paragraph number(s) (C)</p> Signup and view all the answers

What happens to approved revisions of the Standard?

<p>They are published periodically (B)</p> Signup and view all the answers

What must a request for interpretation be in order to be effective?

<p>Clear and unambiguous (D)</p> Signup and view all the answers

What does the term 'Cases' refer to in this context?

<p>Alternative rules provided when justified (B)</p> Signup and view all the answers

Who can render interpretations of any requirement of the Standard?

<p>The Secretary of the B89 Standards Committee (A)</p> Signup and view all the answers

What does MPE stand for in the context of calipers?

<p>Maximum Permissible Error (D)</p> Signup and view all the answers

For calipers without an adjustable zero, what type of error may occur when measuring?

<p>Nonzero error (A)</p> Signup and view all the answers

At what temperature are the specifications for calipers generally applied?

<p>20°C (68°F) (C)</p> Signup and view all the answers

Which type of calipers might include unique measurement indications?

<p>Specialty calipers also (D)</p> Signup and view all the answers

What must be considered when evaluating metrological characteristics of a caliper?

<p>Nonzero errors (D)</p> Signup and view all the answers

Which standard must specifications for specialty calipers conform to?

<p>ISO 13385-1 (B)</p> Signup and view all the answers

What is not permitted when determining conformance to specifications?

<p>Averaging of test values (A)</p> Signup and view all the answers

What type of measuring faces can be found on specialty calipers?

<p>Spherical and conical measuring faces (D)</p> Signup and view all the answers

Flashcards

ASME B89.1.14-2018

A document outlining technical specifications for calipers, a measuring tool.

Calipers

A measuring tool used for accurate measurement of distances, lengths, and diameters.

American National Standard

A document that sets standards and guidelines for a technical field.

Date of Issuance

The date when a document was officially released and became effective.

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Interpretation

A written response to inquiries about the interpretation of technical aspects of a standard.

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Errata

Updates to the document that may address errors, clarifications, or changes in technology.

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Cases

Specific guidelines or instructions that supplement the standard.

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ASME

The organization responsible for developing and publishing the standard.

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Revision Proposals

Formal requests to change the content of a standard, typically involving specific paragraph numbers, proposed wording, and reasons for the change.

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How are Standards Updated?

A standard is updated regularly with changes based on real-world experience and feedback.

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What are the requirements for Cases?

Requests for Cases should be clearly written and include a Statement of Need, Background Information, and the applicable standard edition(s).

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How do you get a standard Interpretation?

Interpretations are only provided in response to written requests, preferably submitted through the online form.

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What should be included in Revision Proposals?

Proposals for revisions should be detailed, citing paragraph numbers, proposed wording, and reasons for the change.

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Who approves Cases?

The B89 Standards Committee determines if a Case is justified and approves its implementation.

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What's the primary purpose of ASME B89.1.14-2018?

This standard outlines the essential requirements for the specification, verification, and calibration of various caliper types, including vernier, dial, electronic digital, and specialty calipers. It aims to complement and provide additional detail beyond ISO 13385-1.

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How does ASME B89.1.14-2018 contribute to the industry?

The standard establishes a robust framework for the design, verification, and calibration of calipers, ensuring consistent practices across the industry.

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Why is this standard considered user-friendly for calibration?

This Standard provides enough detail to ensure that the user doesn't need access to ISO 13385-1 for the verification or calibration of calipers.

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What is the foundation for terminology used in this standard?

The standard draws upon the definitions found in ASME B89.7.1, ISO 13385-1:2011, and JCGM 200, providing a unified understanding of key terms.

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What does 'Caliper Design' refer to in the context of this standard?

It refers to the overall structure and features of calipers, encompassing aspects like their mechanical design and materials.

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Explain the significance of 'General' within Caliper Design.

This encompasses the general principles of caliper design, focusing on creating calipers that are both accurate and reliable.

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What is a proper question format for an interpretation request?

A concise question that can be answered with a simple "Yes" or "No" regarding a specific requirement in the Standard.

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What is the 'Edition' field used for?

The specific edition of the ASME B89 Standard that the interpretation request pertains to.

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What is the purpose of "Background Information"?

Information provided by the inquirer to help the committee understand the context of the interpretation request.

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What type of assistance does ASME NOT provide?

ASME will not offer individual consultations for specific engineering problems or general application of their standards, focusing on interpretation requests instead.

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What happens to requests not in the proper format?

The committee may revise a poorly formatted request before providing an answer, which could inadvertently change the intended meaning.

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What are ASME's limitations in terms of approvals?

ASME will not endorse, certify, or approve any specific product, construction, or activity. Their role is to provide interpretations of their standards.

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What happens when new information relevant to an interpretation is found?

ASME will consider revising an interpretation if new information that might affect the original response becomes available.

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How can disagreements with an interpretation be addressed?

Individuals who disagree with an interpretation can appeal to the relevant ASME Committee or Subcommittee.

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MPE for All Measurements

The maximum permissible error (MPE) applies to all individual measurements taken while using a caliper. Averaging multiple measurements is not allowed.

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MPE for Adjustable Zero

For adjustable zero calipers, MPE values stated in the metrological characteristics apply when the measuring faces are properly in contact for zero setting.

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Nonzero Error for Fixed Zero Calipers

Calipers without an adjustable zero point, like some vernier calipers, may have a nonzero error when measuring faces touch. This error is included in the MPE evaluation without correction.

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MPE for Reasonable Use

The MPE values apply to all measurement indications made under normal use of the caliper.

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MPE and Measurement Indications

The specified MPE values apply to any and all unique measurement indications made under reasonable use of the caliper.

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Specialty Caliper Specifications

All specifications for specialty calipers, such as calipers for tubing, threads, or specialized measuring faces, are defined by the manufacturer and should comply with the standards in ISO 13385-1.

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Temperature and CTE for MPE

The CTE (coefficient of thermal expansion) is taken into account when determining the MPE, especially for calipers used in varying temperature environments.

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Standard Operating Temperature for Calipers

Calipers are typically tested and specified at a standard operating temperature of 20°C (68°F) unless otherwise stated by the manufacturer.

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Coefficient of Thermal Expansion (CTE)

The change in length of a material per unit change in temperature.

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Rated Operating Condition

The temperature at which a caliper is designed to operate optimally and provide its most accurate measurements.

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Maximum Permissible Error (MPE)

The maximum permissible error in a caliper's measurement. It's a specification that defines the tolerance allowed in the device's readings.

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Repeatability Test

A test that evaluates how consistent a caliper's measurements are when taken multiple times at the same point.

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Line Contact Error

A measure of how much a caliper's reading changes when the measuring surfaces are moved along a line, like measuring a ruler.

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Error Due to Crossed Knife-Edge Distance

An error in a caliper's reading caused by the distance between the knife edges, which are the points where the measurement takes place.

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Measurement Uncertainty

A method for assessing the degree of uncertainty in a measurement, considering factors like environmental conditions and instrument calibration.

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Decision Rule

A rule used to determine if a caliper meets the required specifications by comparing its errors to a set tolerance.

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Study Notes

ASME B89.1.14-2018 Calipers

  • This standard details the specifications, verification, and calibration of various caliper types (vernier, dial, digital, specialty)
  • ISO 13385-1 defines the international design and metrological characteristics of calipers
  • This standard complements but doesn't contradict ISO 13385-1. It includes detailed test methods, traceability, and uncertainty analyses.

Scope

  • The standard covers the specification, verification, and calibration of calipers, including vernier, dial, electronic digital, and specialty types.

Definitions

  • Definitions used align with ASME B89.7.1, ISO 13385-1:2011, and JCGM 200.

References

  • Documents referenced include ASME standards and ISO standards, focusing on temperature, humidity, and measurement uncertainty.

Caliper Design

  • Calipers feature a movable slider with measuring jaws against a stationary jaw for outside, inside, and depth measurements.
  • Design ensures compliance with standard requirements and ISO 13385-1.

Least Count

  • Vernier calipers with SI units read to 0.05 mm or 0.02 mm.
  • Dial calipers using SI units read to 0.05 mm, 0.02 mm, or 0.01 mm.
  • Electronic digital calipers using SI units read to 0.01 mm.
  • US customary unit calipers have similar specifications.

Maximum Permissible Errors (MPEs)

  • Table 5.8-1 provides default MPE values based on measured length up to 1000 mm (40 in) and are a function of the length.
  • Manufacturers may specify different MPE values for different caliper types.
  • MPE values given are both in SI units (mm) and US customary units (in).

Operator

  • Operator proficiency impacts measurement accuracy.
  • The skill of the operator is a contributing factor in the measurement process.

Zero Setting

  • Adjustable zero points allow for calibration adjustments.
  • Verification procedures must be adjusted for non-adjustable types.

Traceability

  • Using calibrated devices (e.g., gage blocks) in tests is essential to demonstrate conformance to specifications.

Temperature

  • Calibration and testing are performed at 20°C (68°F), or as specified.
  • Temperature corrections are needed if operating conditions are not at 20°C.

Measurement Uncertainty

  • Uncertainty in the values of the tests is considered.
  • Factors like temperature variations, differences in material properties, and operator skill are documented.

Metrological Characteristics

  • Key factors like partial surface contact error, repeatability, line contact error, scale shift error, are addressed.
  • Specialty calipers require manufacturer-specific specifications.

Test Points

  • Sufficient test points are necessary to confirm the quality of the results.
  • Points should be evenly distributed within the measuring range.

Good Operating Procedures

  • Maintenance and cleaning are essential for accurate measurements.
  • Storage conditions to prevent damage are necessary.

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ASME B89.1.14-2018 Calipers PDF

Description

This quiz explores the specifications, verification, and calibration of various types of calipers as outlined in the ASME B89.1.14-2018 standard. It also includes comparisons with ISO 13385-1 and provides insights into design and measurement techniques. Test your knowledge on these essential metrology tools!

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