ASME B89.3.7-2013 PDF

Full title and description

ASME B89.3.7-2013 — Test methods for performance of electronic digital indicators and single-function digital readouts used with dimensional measuring instruments. This standard specifies procedures, test conditions, and performance criteria for evaluating the accuracy, resolution, repeatability, and other performance characteristics of electronic digital indicators and single-function digital readouts that display linear measurements from dimensional measuring instruments.

Abstract

This standard provides standardized test methods to assess the performance of electronic digital indicators and single-function digital readouts used in dimensional measurement. It defines tests for accuracy, resolution, repeatability, stability, linearity, damping, and effects of environmental conditions and power interruption. The aim is to ensure consistent and reliable display performance for devices used with comparators, micrometers, dial indicators, and other dimensional measurement probes.

General information

• Status: Published standard
• Publication date: 2013
• Publisher: ASME (The American Society of Mechanical Engineers)
• ICS / categories: Measurement and testing; Metrology; Industrial instrumentation
• Edition / version: 2013 (B89.3.7-2013)
• Number of pages: Approximately 20–40 pages (typical for ASME test-method standards)

Scope

The scope covers test methods for evaluating the performance of electronic digital indicators and single-function digital readouts that are used to display linear dimensional measurements. It applies to instruments intended to be used with mechanical probes or transducers and addresses lab and shop-floor testing conditions, electrical power considerations, environmental influences, and instrument settings affecting performance. The standard does not cover multifunction readouts, complex data-logging systems, or complete coordinate measuring machines.

Key topics and requirements

• Definition of test equipment, references, and required environmental conditions for testing.
• Procedures for determining resolution and displayed resolution behavior under varying input.
• Accuracy and linearity tests across the measurement range, including specified tolerances.
• Repeatability and short-term stability tests under constant conditions.
• Power interruption and recovery tests to evaluate memory and data retention behavior.
• Damping and response-time tests to characterize filter/averaging functions.
• Tests for zero-setting, tare functions, and operator-adjustable parameters that affect displayed results.
• Reporting and documentation requirements for test results and instrument identification.

Typical use and users

Used by metrology labs, quality engineers, calibration technicians, manufacturers of gauges and digital indicators, and procurement specialists who need to verify performance claims. The standard assists calibration laboratories and test houses in developing test procedures, and helps instrument manufacturers demonstrate compliance with standardized performance tests.

Related standards

Related ASME B89 series standards on dimensional metrology and test methods (covering comparators, micrometers, and other gauges), ISO and IEC standards on digital measuring instruments and indicators, and national calibration and performance standards used by calibration laboratories.

Keywords

ASME B89.3.7-2013, electronic digital indicator, digital readout, test methods, metrology, calibration, accuracy, resolution, repeatability, linearity, performance tests

FAQ

Q: What is this standard?

A: ASME B89.3.7-2013 is a test-method standard that specifies procedures for evaluating the performance of electronic digital indicators and single-function digital readouts used with dimensional measuring instruments.

Q: What does it cover?

A: It covers test procedures for accuracy, resolution, repeatability, stability, linearity, damping/response, power interruption, and related functions affecting the displayed measurement from such devices.

Q: Who typically uses it?

A: Calibration laboratories, quality and metrology engineers, instrument manufacturers, and technical procurement or inspection personnel who need to assess or specify digital indicator performance.

Q: Is it current or superseded?

A: The standard was published in 2013. Users should verify with ASME for any amendments or later superseding editions to confirm current status.

Q: Is it part of a series?

A: Yes. It is part of the ASME B89 series related to dimensional metrology, which includes other test methods and specifications for measurement instruments and systems.

Q: What are the key keywords?

A: Electronic digital indicator, digital readout, test methods, metrology, calibration, ASME B89.3.7-2013, accuracy, resolution, repeatability.