ASTM E2623-08
(Practice)Standard Practice for Reporting Temperature Calibrations
Standard Practice for Reporting Temperature Calibrations
SIGNIFICANCE AND USE
This practice is adequate for use with all ASTM Test Methods which require the reporting of temperature measurements.
The Report of Calibration, however named, is the physical output of the calibration laboratory. It shall be prepared so that both the results of the measurement(s) and the non-technical information necessary to support those results are conveyed in a manner that ensures accurate communication and justification of the results to the benefit of all concerned.
This practice is not meant to supersede requirements of other standards practice such as ISO/IEC 17025 or ANSI/NCSL Z540-1.
SCOPE
1.1 This practice contains reporting requirements for temperature calibrations included in ASTM Test Methods.
1.2 This practice includes radiation thermometers, liquid-in-glass thermometers, resistance thermometers, and new thermocouples. The appendices include sample reports compliant with this practice.
Note 1—This practice does not apply to used thermocouples.
1.3 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.
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Designation:E2623–08
Standard Practice for
Reporting Thermometer Calibrations
This standard is issued under the fixed designation E 2623; 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. Scope 3.2.1.1 Discussion—The correction is equal to the negative
of the estimated systematic error. Since the systematic error
1.1 This practice contains reporting requirements for ther-
cannot be known perfectly, the compensation cannot be com-
mometer calibrations included in ASTM Committee E20 Test
plete.
Methods.
3.2.2 error, n—the indication of a thermometer or tempera-
1.2 This practice covers reports of calibration for radiation
ture measuring device minus a true value of the corresponding
thermometers, liquid-in-glass thermometers, resistance ther-
input quantity.
mometers, and new thermocouples.
3.2.2.1 Discussion—Since the true value cannot be deter-
NOTE 1—This practice does not apply to used thermocouples.
mined, in practice a conventional true value is used. This
1.3 This standard does not purport to address all of the concept applies mainly where the instrument is compared to a
safety concerns, if any, associated with its use. It is the reference standard.
responsibility of the user of this standard to establish appro- 3.2.3 gradient zone, n—thesectionofathermocouplethatis
priate safety and health practices and determine the applica- exposed during a measurement to temperatures in the range
bility of regulatory limitations prior to use. from t + 0.1(t – t )to t + 0.9(t – t ), where t is
amb m amb amb m amb amb
ambienttemperatureand t isthetemperatureofthemeasuring
m
2. Referenced Documents
junction.
2.1 ASTM Standards:
3.2.3.1 Discussion—This term is used in thermocouple
E77 Test Method for Inspection and Verification of Ther- calibration reports as part of the description of the thermal
mometers
profile along the length of the thermocouple. Although a
E 344 Terminology Relating to Thermometry and Hydrom- thermocouple emf is a function of the measuring and reference
etry
junction temperatures, the emf is actually generated along the
2.2 Other Standards:
length of the thermocouple, wherever the thermoelements pass
ANSI/NCSL Z540-1-1994 American National Standard for through a temperature gradient. The gradient zone definition is
Calibration—Calibration Laboratories and Measuring and
intended to describe, in an approximate way, the section of
Test Equipment—General Requirements thermocouple that created most of the emf during the calibra-
ISO/IEC 17025:2005 General Requirements for the Com-
tion.
petence of Testing and Calibration Laboratories 3.2.4 half-maximum heated length, n—the distance between
the tip of the temperature sensor and the position along the
3. Terminology
length of the sensor leads or sheath where the temperature
3.1 Definitions—Definitions given in Terminology E 344,
equals the average of the calibration-point and ambient tem-
unless otherwise defined herein, apply to terms as used in this
peratures.
practice.
3.2.4.1 Discussion—This term is used in thermocouple
3.2 Definitions of Terms Specific to This Standard:
calibration reports as part of the description of the thermal
3.2.1 correction, n—numerical value added to the uncor-
profile along the length of the thermocouple.
rected result of a measurement to compensate for errors.
4. Summary of Practice
4.1 This practice describes the required information neces-
ThispracticeisunderthejurisdictionofASTMCommitteeE20onTemperature
Measurement and is the direct responsibility of Subcommittee E20.07 on Funda- sary for reporting results of temperature calibrations included
mentals in Thermometry.
in ASTM Test Methods.
Current edition approved Nov. 1, 2008. Published January 2009.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5. Significance and Use
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on 5.1 This practice is adequate for use with all ASTM Test
the ASTM website.
Methods which require the reporting of temperature measure-
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
ments.
4th Floor, New York, NY 10036, http://www.ansi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
E2623–08
5.2 The Report of Calibration, however named, is the 6.1.11 Traceability statement to NIST or other National
physical output of the calibration laboratory. It shall be Metrological Institute (NMI) of test equipment used in the test
prepared so that both the results of the measurement(s) and the or calibration.
non-technical information necessary to support those results
6.1.12 Signature or equivalent identification of responsible
areconveyedinamannerthatensuresaccuratecommunication
party.
and justification of the results to the benefit of all concerned.
6.1.12.1 Other signatures may be required, at the discretion
5.3 This practice is not meant to supersede requirements of
of the laboratory manager. Each signatory or named person
other standards practice such as ISO/IEC 17025 or ANSI/
accepts responsibility for the contents of the report.
NCSL Z540-1.
6.1.13 Astatementspecifyingthatthecalibrationcertificate,
however named, shall not be reproduced except in full, without
6. Procedure
written approval of the laboratory.
6.1 Requirements for Written Report—The requirements in
6.1.14 Statement of Temperature Scale (e.g. International
6.1.1 through 6.1.14 are mandatory for all written reports
Temperature Scale of 1990 (ITS-90)).
issued in compliance with this practice. Sections 6.1.15
6.1.15 Where appropriate and needed, opinions and inter-
through 6.1.19 include general provisions for information that
pretations, including additional information which may be
may be omitted if not required by a calibration procedure or
required by specific methods, clients or groups of clients.
client/user.
6.1.16 Where relevant, a sampling plan and procedure and a
6.1.1 Title Examples—Report of Calibration, Calibration
statement to the effect that the results relate only to the items
Certificate, Test Report or Test Certificate.
calibrated.
6.1.2 Name and address of the laboratory and location
6.1.17 Where relevant, a statement of compliance/non-
where calibration was performed, if different from the labora-
compliance with requirements and/or specification.
tory address.
6.1.3 Unique identification of the report or certificate, and 6.1.17.1 Compliance refers to all criteria, both specifica-
tions and maximum permissible error, of a referenced standard
on each page an identification in order to ensure that the page
is recognized as part of the report or certificate, a clear and not just portions, such as, compliance with maximum
permissible error only.
identification of the end of the report or certificate, and the
page number and total number of pages.
6.1.18 Date of receipt of calibration item where this is
6.1.4 Name and address of the client.
critical to the validity and application of the results.
6.1.5 Statement and concise description of the test method
6.1.19 When applicable, customer purchase order or refer-
or calibration procedure used. This statement shall include
ence number and date.
revisions and the date of the test method or calibration
6.2 Additional Requirements for All Reported Calibrations
procedure. Test methods can consist of published standards
for Radiation Thermometers only:
(such as ASTM Test Methods), internally developed methods,
6.2.1 Statement of source type (black body, filament lamp,
or a combination of both.
etc.).
6.1.5.1 Information describing deviations from previously
6.2.2 Statement of source aperture or diameter of flat type
agreed upon procedures.
sources.
6.1.6 Description of thermometer or thermocouple, includ-
6.2.3 Statement of calibration distance.
ing overall range, and if different, range calibrated. This shall
6.2.4 Statementoftargetsize(asreferencedtothethermom-
also include manufacturer, model number (as applicable),
eter under test).
identification or unique serial number, and the condition of the
6.2.5 Statement of emissivity (emissivity setting of the
thermometer or thermocouple upon receipt.
thermometer under test.
6.1.7 Date of Calibration:
6.2.6 Statement of source emissivity.
6.1.7.1 Where applicable, additional dates, including date
received, date of report preparation and next due date may be 6.2.7 Statement of the spectral response of the thermometer
included. under test.
6.1.8 Calibration Results—This can take the form of a table
6.2.8 Statement of optical resolution.
with reading of standard temperature, reading of test instru-
6.3 Additional Requirements for All Reported Calibrations
ment, corrections to be applied and consistent units of measure
of Liquid-in-Glass Thermometers:
or any form of reporting as requested by the customer.
6.3.1 Statement of minimum length of time at test tempera-
6.1.8.1 When an instrument has been repaired or adjusted,
ture before reading.
the calibration results before and after repair or adjustment
NOTE 2—The time allowed for equilibrium of a liquid-in-glass ther-
shall be reported, if available.
mometer is dependent on the type of thermometric liquid used. For the
6.1.9 Conditions (for example, environmental conditions)
purposes of this practice, the timing device for this measurement does not
under which the calibrations were made that have an influence
need to be traceable to an NMI.
on the measurement results.
6.1.10 A statement of calculated measurement uncertainty 6.3.2 Statement of emergent stem temperature either in
and corresponding level of confidence. chart form or text form (for partial immersion thermometers or
6.1.10.1 Method for calculating uncertainties. total immersion thermometers calibrated with partial immer-
6.1.10.2 Coverage factor and estimated confidence interval. sion only).
E2623–08
6.4 Additional Requirements for Reported Calibrations of compliance with this practice. Sections 6.5.5 and 6.5.6 include
Resistance Thermometers—The requirements in 6.4.1 through general provisions for information that may be omitted if not
6.4.4 are mandatory for all written reports for resistance required by a calibration procedure or client/user.
thermometers issued in compliance with this practice. Sections 6.5.1 Mathematical description of any fitting equation used
6.4.5 through 6.4.8 include general provisions for information in reporting the results of the calibration. The equation may
that may be omitted if not required by a calibration procedure consist of a deviation function modeling the difference in emf
or client/user. from a reference function of a stated thermocouple type, or the
6.4.1 As found values R(0.01 °C), R(0 °C) or other agreed equation may consist of a function giving emf versus measur-
upon value. ing junction temperature.
6.4.2 Change in R(0.01 °C) or R(0 °C) observed during 6.5.2 Immersion depth used during the test.
calibration. 6.5.3 Gradient zone of the thermocouple during the test.
6.4.3 Nominal excitation current. 6.5.4 Statement whether any allowance is included in the
6.4.4 Uncertainty of fitted results, if different from uncer- uncertainty for thermocouple drift and inhomogeneity.
tainty of measurement data. 6.5.5 Statement of calibration set up, if applicable.
6.4.5 Tabulated R(t) when specified by the client/user. 6.5.6 Reference junction temperature.
6.4.6 Hysteresis results, if applicable.
7. Recordkeeping Requirements
6.4.7 Fitting equation or reference to fitting equation, if
applicable. 7.1 A record system of all calibrations shall be kept. This
6.4.8 Fitting residuals, if applicable. system shall contain sufficient information to permit regenera-
6.4.9 Repeatability results, if applicable. tion of the Certificate, however named, and shall include the
6.5 Additional Requirements for Reported Calibrations of identity of personnel involved in preparation and calibration.
Thermocouples—The requirements in 6.5.1 through 6.5.4 are 7.2 Calibration records shall be retained for the period of
mandatory for all written reports for thermocouples issued in time defined by the laboratory’s quality system.
E2623–08
APPENDIXES
(Nonmandatory Information)
X1. SAMPLE REPORT FOR LIQUID-IN-GLASS THERMOMETERS
ABS Calibration Laboratory
1234 Main Street
City, State 12345-6789
Telephone: (555) 555-5555 Fax: (555) 555-5556
REPORT OF CALIBRATION
FOR
Thermometer
Test Number: S-01-098
Type: Range: Serial #: 12345
Maker: Lab Test #: Calibration Date:
Submitted by:
CUSTOMER NAME
Customer Address
City, State 23456-7890
Calibration Reading of Test Emergent Stem Expanded
Temperature Thermometer Correction Temperature Uncertainty
(°C) (°C) (°C) (°C) (°C)
0.00 0.00 0.00 19°C 0.04
50.00 49.99 +0.01 20°C 0.04
100.00 100.02 –0.02 21°C 0.04
200.00 200.00 0.00 28°C 0.04
The data in the above table of this report applies only to the item specifically listed on this report.
The temperatures written in this Report are those defined by the International Temperature Scale of 1990 (ITS- 90).
Minimum amount of time at test temperature before reading is three minutes.
Uncertainty statement: The combined standard uncertainty includes the standard uncertainty reported for the standard, the standard uncertainty for the measure-
ment process, and the standard uncertainty for any uncorrected bath gradients. The combined standard uncertainty is multiplied by a coverage factor of 2togivean
expanded uncertainty, which defines and interval having a level of confidence of approximately 95 percent. The expanded uncertainty presented in this report is con-
sistent with the 1993 ISO Guide to the Expression of Uncertainty in Measurement. The expanded uncertainty is not to be confused with a tolerance limit for the user
during application.
Traceability statement: The standards of ABS Calibration Laboratory are traceable to the National Metrology Institute, and are part of a comprehensive measure-
ment assurance program for ensuring continued accuracy and measurement traceability within the level of uncertainty reported by this laboratory. The laboratory test
number identified above is the unique report number to be used in referencing measurement traceability for the thermometer identified in this report only.
E2623–08
Supplemental Information:
Description of thermomete
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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.
Designation:E2623–08
Standard Practice for
Reporting Temperature Calibrations
This standard is issued under the fixed designation E 2623; 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. Scope
1.1 This practice contains reporting requirements for temperature calibrations included in ASTM Test Methods.
1.2 This practice includes radiation thermometers, liquid-in-glass thermometers, resistance thermometers, and new thermo-
couples. The appendices include sample reports compliant with this practice.
NOTE 1—This practice does not apply to used thermocouples.
1.3 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
2.1 ASTM Standards:
E77 Test Method for Inspection and Verification of Thermometers
E 344 Terminology Relating to Thermometry and Hydrometry
2.2 Other Standards:
ANSI/NCSL Z540-1-1994 American National Standard for Calibration—Calibration Laboratories and Measuring and Test
Equipment—General Requirements
ISO/IEC 17025:2005 General Requirements for the Competence of Testing and Calibration Laboratories
3. Terminology
3.1 Definitions—Definitions given in Terminology E 344, unless otherwise defined herein, apply to terms as used in this
practice.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 correction, n—numerical value added to the uncorrected result of a measurement to compensate for errors.
3.2.1.1 Discussion—The correction is equal to the negative of the estimated systematic error. Since the systematic error cannot
be known perfectly, the compensation cannot be complete.
3.2.2 error, n—the indication of a thermometer or temperature measuring device minus a true value of the corresponding input
quantity.
3.2.2.1 Discussion—Since the true value cannot be determined, in practice a conventional true value is used. This concept
applies mainly where the instrument is compared to a reference standard.
3.2.3 gradient zone, n—the section of a thermocouple that is exposed during a measurement to temperatures in the range from
t + 0.1(t – t )to t + 0.9(t – t ), where t is ambient temperature and t is the temperature of the measuring junction.
amb m amb amb m amb amb m
3.2.3.1 Discussion—This term is used in thermocouple calibration reports as part of the description of the thermal profile along
the length of the thermocouple.Although a thermocouple emf is a function of the measuring and reference junction temperatures,
the emf is actually generated along the length of the thermocouple, wherever the thermoelements pass through a temperature
gradient.Thegradientzonedefinitionisintendedtodescribe,inanapproximateway,thesectionofthermocouplethatcreatedmost
of the emf during the calibration.
3.2.4 half-maximum heated length, n—the distance between the tip of the temperature sensor and the position along the length
of the sensor leads or sheath where the temperature equals the average of the calibration-point and ambient temperatures.
This practice is under the jurisdiction ofASTM Committee E20 on Temperature Measurement and is the direct responsibility of Subcommittee E20.07 on Fundamentals
in Thermometry.
Current edition approved Nov. 1, 2008. Published January 2009.
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
E2623–08
3.2.4.1 Discussion—This term is used in thermocouple calibration reports as part of the description of the thermal profile along
the length of the thermocouple.
4. Summary of Practice
4.1 This practice describes the required information necessary for reporting results of temperature calibrations included in
ASTM Test Methods.
5. Significance and Use
5.1 This practice is adequate for use with all ASTM Test Methods which require the reporting of temperature measurements.
5.2 The Report of Calibration, however named, is the physical output of the calibration laboratory. It shall be prepared so that
both the results of the measurement(s) and the non-technical information necessary to support those results are conveyed in a
manner that ensures accurate communication and justification of the results to the benefit of all concerned.
5.3 This practice is not meant to supersede requirements of other standards practice such as ISO/IEC 17025 or ANSI/NCSL
Z540-1.
6. Procedure
6.1 Requirements for Written Report—The requirements in 6.1.1 through 6.1.14 are mandatory for all written reports issued in
compliance with this practice. Sections 6.1.15 through 6.1.19 include general provisions for information that may be omitted if not
required by a calibration procedure or client/user.
6.1.1 Title Examples—Report of Calibration, Calibration Certificate, Test Report or Test Certificate.
6.1.2 Nameandaddressofthelaboratoryandlocationwherecalibrationwasperformed,ifdifferentfromthelaboratoryaddress.
6.1.3 Unique identification of the report or certificate, and on each page an identification in order to ensure that the page is
recognized as part of the report or certificate, a clear identification of the end of the report or certificate, and the page number and
total number of pages.
6.1.4 Name and address of the client.
6.1.5 Statement and concise description of the test method or calibration procedure used. This statement shall include revisions
and the date of the test method or calibration procedure. Test methods can consist of published standards (such as ASTM Test
Methods), internally developed methods, or a combination of both.
6.1.5.1 Information describing deviations from previously agreed upon procedures.
6.1.6 Description of thermometer or thermocouple, including overall range, and if different, range calibrated. This shall also
include manufacturer, model number (as applicable), identification or unique serial number, and the condition of the thermometer
or thermocouple upon receipt.
6.1.7 Date of Calibration:
6.1.7.1 Where applicable, additional dates, including date received, date of report preparation and next due date may be
included.
6.1.8 Calibration Results—This can take the form of a table with reading of standard temperature, reading of test instrument,
corrections to be applied and consistent units of measure or any form of reporting as requested by the customer.
6.1.8.1 When an instrument has been repaired or adjusted, the calibration results before and after repair or adjustment shall be
reported, if available.
6.1.9 Conditions (for example, environmental conditions) under which the calibrations were made that have an influence on the
measurement results.
6.1.10 A statement of calculated measurement uncertainty and corresponding level of confidence.
6.1.10.1 Method for calculating uncertainties.
6.1.10.2 Coverage factor and estimated confidence interval.
6.1.11 Traceability statement to NIST or other National Metrological Institute (NMI) of test equipment used in the test or
calibration.
6.1.12 Signature or equivalent identification of responsible party.
6.1.12.1 Other signatures may be required, at the discretion of the laboratory manager. Each signatory or named person accepts
responsibility for the contents of the report.
6.1.13 A statement specifying that the calibration certificate, however named, shall not be reproduced except in full, without
written approval of the laboratory.
6.1.14 Statement of Temperature Scale (e.g. International Temperature Scale of 1990 (ITS-90)).
6.1.15 Where appropriate and needed, opinions and interpretations, including additional information which may be required by
specific methods, clients or groups of clients.
6.1.16 Where relevant, a sampling plan and procedure and a statement to the effect that the results relate only to the items
calibrated.
6.1.17 Where relevant, a statement of compliance/non-compliance with requirements and/or specification.
6.1.17.1 Compliance refers to all criteria, both specifications and maximum permissible error, of a referenced standard and not
just portions, such as, compliance with maximum permissible error only.
E2623–08
6.1.18 Date of receipt of calibration item where this is critical to the validity and application of the results.
6.1.19 When applicable, customer purchase order or reference number and date.
6.2 Additional Requirements for All Reported Calibrations for Radiation Thermometers only:
6.2.1 Statement of source type (black body, filament lamp, etc.).
6.2.2 Statement of source aperture or diameter of flat type sources.
6.2.3 Statement of calibration distance.
6.2.4 Statement of target size (as referenced to the thermometer under test).
6.2.5 Statement of emissivity (emissivity setting of the thermometer under test.
6.2.6 Statement of source emissivity.
6.2.7 Statement of the spectral response of the thermometer under test.
6.2.8 Statement of optical resolution.
6.3 Additional Requirements for All Reported Calibrations of Liquid-in-Glass Thermometers:
6.3.1 Statement of minimum length of time at test temperature before reading.
NOTE 2—The time allowed for equilibrium of a liquid-in-glass thermometer is dependent on the type of thermometric liquid used. For the purposes
of this practice, the timing device for this measurement does not need to be traceable to an NMI.
6.3.2 Statement of emergent stem temperature either in chart form or text form (for partial immersion thermometers or total
immersion thermometers calibrated with partial immersion only).
6.4 Additional Requirements for Reported Calibrations of Resistance Thermometers—The requirements in 6.4.1 through 6.4.4
are mandatory for all written reports for resistance thermometers issued in compliance with this practice. Sections 6.4.5 through
6.4.8 include general provisions for information that may be omitted if not required by a calibration procedure or client/user.
6.4.1 As found values R(0.01 °C), R(0 °C) or other agreed upon value.
6.4.2 Change in R(0.01 °C) or R(0 °C) observed during calibration.
6.4.3 Nominal excitation current.
6.4.4 Uncertainty of fitted results, if different from uncertainty of measurement data.
6.4.5 Tabulated R(t) when specified by the client/user.
6.4.6 Hysteresis results, if applicable.
6.4.7 Fitting equation or reference to fitting equation, if applicable.
6.4.8 Fitting residuals, if applicable.
6.4.9 Repeatability results, if applicable.
6.5 Additional Requirements for Reported Calibrations of Thermocouples—The requirements in 6.5.1 through 6.5.4 are
mandatory for all written reports for thermocouples issued in compliance with this practice. Sections 6.5.5 and 6.5.6 include
general provisions for information that may be omitted if not required by a calibration procedure or client/user.
6.5.1 Mathematical description of any fitting equation used in reporting the results of the calibration. The equation may consist
of a deviation function modeling the difference in emf from a reference function of a stated thermocouple type, or the equation
may consist of a function giving emf versus measuring junction temperature.
6.5.2 Immersion depth used during the test.
6.5.3 Gradient zone of the thermocouple during the test.
6.5.4 Statement whether any allowance is included in the uncertainty for thermocouple drift and inhomogeneity.
6.5.5 Statement of calibration set up, if applicable.
6.5.6 Reference junction temperature.
7. Recordkeeping Requirements
7.1 Arecord system of all calibrations shall be kept. This system shall contain sufficient information to permit regeneration of
the Certificate, however named, and shall include the identity of personnel involved in preparation and calibration.
7.2 Calibration records shall be retained for the period of time defined by the laboratory’s quality system.
E2623–08
APPENDIXES
(Nonmandatory Information)
X1. SAMPLE REPORT FOR LIQUID-IN-GLASS THERMOMETERS
ABS Calibration Laboratory
1234 Main Street
City, State 12345-6789
Telephone: (555) 555-5555 Fax: (555) 555-5556
REPORT OF CALIBRATION
FOR
Thermometer
Test Number: S-01-098
Type: Range: Serial #: 12345
Maker: Lab Test #: Calibration Date:
Submitted by:
CUSTOMER NAME
Customer Address
City, State 23456-7890
Calibration Reading of Test Emergent Stem Expanded
Temperature Thermometer Correction Temperature Uncertainty
(°C) (°C) (°C) (°C) (°C)
0.00 0.00 0.00 19°C 0.04
50.00 49.99 +0.01 20°C 0.04
100.00 100.02 –0.02 21°C 0.04
200.00 200.00 0.00 28°C 0.04
The data in the above table of this report applies only to the item specifically listed on this report.
The temperatures written in this Report are those defined by the International Temperature Scale of 1990 (ITS- 90).
Minimum amount of time at test temperature before reading is three minutes.
Uncertainty statement: The combined standard uncertainty includes the standard uncertainty reported for the standard, the standard uncertainty for the measure-
ment process, and the standard uncertainty for any uncorrected bath gradients. The combined standard uncertainty is multiplied by a coverage factor of 2togivean
expanded uncertainty, which defines and interval having a level of confidence of approximately 95 percent. The expanded uncertainty presented in this report is con-
sistent with the 1993 ISO Guide to the Expression of Uncertainty in Measurement. The expanded uncertainty is not to be confused with a tolerance limit for the user
during application.
Traceability statement: The standards of ABS Calibration Laboratory are traceable to the National Metrology Institute, and are part of a comprehensive measure-
ment assurance program for ensuring continued accuracy and measurement traceability within the level of uncertainty reported by this laboratory. The laboratory test
number identified abo
...
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