ASTM E2309/E2309M-16

Standard Practices for Verification of Displacement Measuring Systems and Devices Used in Material Testing Machines

SIGNIFICANCE AND USE
4.1 Testing machines that apply and measure displacement are used in many industries. They may be used in research laboratories to determine material properties, and in production lines to qualify products for shipment. The displacement measuring devices integral to the testing machines may be used for measurement of crosshead or actuator displacement over a defined range of operation. The accuracy of the displacement value shall be traceable to the National Institute of Standards and Technology (NIST) or another recognized National Laboratory. Practices E2309 provides a procedure to verify these machines and systems, in order that the measured displacement values may be traceable. A key element to having traceability is that the devices used in the verification produce known displacement characteristics, and have been calibrated in accordance with adequate calibration standards.
SCOPE
1.1 These practices cover procedures and requirements for the calibration and verification of displacement measuring systems by means of standard calibration devices for static and quasi-static testing machines. This practice is not intended to be complete purchase specifications for testing machines or displacement measuring systems. Displacement measuring systems are not intended to be used for the determination of strain. See Practice E83.  
1.2 These procedures apply to the verification of the displacement measuring systems associated with the testing machine, such as a scale, dial, marked or unmarked recorder chart, digital display, etc. In all cases the buyer/owner/user must designate the displacement-measuring system(s) to be verified.  
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.4 Displacement values indicated on displays/printouts of testing machine data systems—be they instantaneous, delayed, stored, or retransmitted—which are within the Classification criteria listed in Table 1, comply with Practices E2309/E2309M.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-Dec-2015
• ICS: 13.220.01 - Protection against fire in general
• Technical Committee: E28 - Mechanical Testing
• Drafting Committee: E28.01 - Calibration of Mechanical Testing Machines and Apparatus

Relations

• Replaced By: ASTM E2309/E2309M-20 - Standard Practices for Verification of Displacement Measuring Systems and Devices Used in Material Testing Machines
• Effective Date: 01-Feb-2020

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:E2309/E2309M −16
Standard Practices for
Verification of Displacement Measuring Systems and
1
Devices Used in Material Testing Machines
ThisstandardisissuedunderthefixeddesignationE2309/E2309M;thenumberimmediatelyfollowingthedesignationindicatestheyear
of original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 2. Referenced Documents
2
1.1 These practices cover procedures and requirements for 2.1 ASTM Standards:
the calibration and verification of displacement measuring E83Practice for Verification and Classification of Exten-
systemsbymeansofstandardcalibrationdevicesforstaticand someter Systems
quasi-static testing machines. This practice is not intended to
3. Terminology
be complete purchase specifications for testing machines or
3.1 Definitions:
displacement measuring systems. Displacement measuring
3.1.1 accuracy, n—degree of conformity of a measure to a
systems are not intended to be used for the determination of
standard.
strain. See Practice E83.
3.1.2 error, n—the amount of deviation from a standard.
1.2 These procedures apply to the verification of the dis-
3.1.2.1 Discussion—The word “error” shall be used with
placement measuring systems associated with the testing
numericalvalues,forexample,“Atadisplacementof+1.00in.,
machine, such as a scale, dial, marked or unmarked recorder
the error of the displacement measuring system was +0.001
chart, digital display, etc. In all cases the buyer/owner/user
in.”
must designate the displacement-measuring system(s) to be
verified. 3.1.3 tolerance, n—theallowabledeviationfromastandard.
1.3 The values stated in either SI units or inch-pound units
3.2 Definitions of Terms Specific to This Standard:
are to be regarded separately as standard. The values stated in 3.2.1 calibration, n—in the case of displacement measuring
each system may not be exact equivalents; therefore, each
systems used with testing machines, the process of comparing
system shall be used independently of the other. Combining
thedisplacementindicationofthemachineorsystemundertest
values from the two systems may result in non-conformance to that of a standard, making adjustments as needed to meet
with the standard.
error requirements.
3.2.2 capacity range, n—inthecaseoftestingmachines,the
1.4 Displacement values indicated on displays/printouts of
testing machine data systems—be they instantaneous, delayed, range of displacement for which it is designed. Some testing
machines have more than one capacity range, that is, multiple
stored, or retransmitted—which are within the Classification
criteria listed in Table 1, comply with Practices E2309/ ranges.
E2309M.
3.2.3 correction, n—in the case of a testing machine, the
1.5 This standard does not purport to address all of the difference obtained by subtracting the measured displacement
from the correct value of the applied displacement.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3.2.4 displacement, n—a movement or measurement of
priate safety and health practices and determine the applica-
length expressed in terms of millimeters, inches, etc.
bility of regulatory limitations prior to use.
3.2.5 displacement measuring system, n—a device or set of
devicescomprisedofadisplacementtransducerandassociated
instrumentation.
1
These practices are under the jurisdiction of ASTM Committee E28 on
Mechanical Testing and is the direct responsibility of Subcommittee E28.01 on
2
Calibration of Mechanical Testing Machines and Apparatus. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Jan. 1, 2016. Published February 2016. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
published in 2005. Last previous edition approved in 2011 as E2309/E2309M- Standards volume information, refer to the standard’s Document Summary page on
ɛ1
05(2011) . DOI: 10.1520/E2309_E2309M-16 the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E2309/E2309M−16
TABLE 1 Classification of Displacement Measuring Systems
Resolution not to Exceed the Greater of: Error not to Exceed the Greater of:
Classification
Relative Error
Fixed Error, mm [in.] % of Reading Fixed Error, mm [in.]
(% of Displacement)
Class A 0.013 [0.0005] ±0.25 ±0.025 [0.001] ±0.5
Class B 0.038 [0.0015] ±0.5 ±0.075 [0.003] ±1.0
Class C 0.064 [0.0025] ±1.0 ±0.125 [0.005] ±2.0
Class D 0.13 [0.005] ±1.5 ±0.25 [0.010] ±3.0
3.2.6 lo
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation: E2309/E2309M − 05 (Reapproved 2011) E2309/E2309M − 16
Standard Practices for
Verification of Displacement Measuring Systems and
1
Devices Used in Material Testing Machines
This standard is issued under the fixed designation E2309/E2309M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1
ε NOTE—The units statement (1.3) and the designation were editorially revised in January 2011.
1. Scope Scope*
1.1 These practices cover procedures and requirements for the calibration and verification of displacement measuring systems
by means of standard calibration devices for static and quasi-static testing machines. This practice is not intended to be complete
purchase specifications for testing machines or displacement measuring systems. Displacement measuring systems are not intended
to be used for the determination of strain. See Practice E83.
1.2 These procedures apply to the verification of the displacement measuring systems associated with the testing machine, such
as a scale, dial, marked or unmarked recorder chart, digital display, etc. In all cases the buyer/owner/user must designate the
displacement-measuring system(s) to be verified.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
1.4 Displacement values indicated on displays/printouts of testing machine data systems—be they instantaneous, delayed,
stored, or retransmitted—which are within the Classification criteria listed in Table 1, comply with Practices E2309/E2309M.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
E83 Practice for Verification and Classification of Extensometer Systems
3. Terminology
3.1 Definitions:
3.1.1 accuracy, n—degree of conformity of a measure to a standard.
3.1.2 error, n—the amount of deviation from a standard.
1
These practices are under the jurisdiction of ASTM Committee E28 on Mechanical Testing and is the direct responsibility of Subcommittee E28.01 on Calibration of
Mechanical Testing Machines and Apparatus.
Current edition approved Jan. 15, 2011Jan. 1, 2016. Published January 2011February 2016. Originally published in 2005. Last previous edition approved in 20052011 as
ɛ1
E2309E2309/E2309M-05(2011) -05. DOI: 10.1520/E2309-05R11E01.10.1520/E2309_E2309M-16
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3.1.2.1 Discussion—
The word “error” shall be used with numerical values, for example, “At a displacement of +1.00 in., the error of the displacement
measuring system was +0.001 in.”
3.1.3 tolerance, n—the allowable deviation from a standard.
3.2 Definitions of Terms Specific to This Standard:
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E2309/E2309M − 16
TABLE 1 Classification of Displacement Measuring Systems
Resolution not to Exceed the Greater of: Error not to Exceed the Greater of:
Classification
Relative Error
Fixed Error, mm [in.] % of Reading Fixed Error, mm [in.]
(% of Displacement)
Class A 0.013 [0.0005] ±0.25 ±0.025 [0.001] ±0.5
Class B 0.038 [0.0015] ±0.5 ±0.075 [0.003] ±1.0
Class C 0.064 [0.0025] ±1.0 ±0.125 [0.005] ±2.0
Class D 0.13 [0.005] ±1.5 ±0.25 [0.010] ±3.0
3.2.1 calibration, n—in the case of displacement measuring systems used with testing machines, the process of comparing the
displacement indication of the machine or system under test to that of a standard, making adjustments as needed to meet error
requirements.
3.2.2 capacity range, n—in the case of testing machines, the range of di
...