iTeh StandardsiTeh Standards
EURUSD
Your shopping cart is empty.
ASTM

ASTM E2744-10

(Test Method)

Standard Test Method for Pressure Calibration of Thermal Analyzers

Standard Test Method for Pressure Calibration of Thermal Analyzers

SIGNIFICANCE AND USE
Most thermal analysis experiments are conducted under ambient pressure conditions using isothermal or temperature time rate of change conditions where time or temperature is the independent parameter. Some experiments, however, are conducted under reduced or elevated pressure conditions where pressure is an independent experimental parameter (Test Method E537). Oxidation Induction Times (Test Methods D5483, D5885, D6186, and E1858), Oxidation Onset Temperature (Test Method E2009), and the Vapor Pressure (Test Method E1782) are other examples of experiments conducted under elevated or reduced pressure (vacuum) conditions. Since in these cases pressure is an independent variable, the measurement system for this parameter shall be calibrated to ensure interlaboratory reproducibility.
The dependence of experimental results on pressure is usually logarithmic rather than linear.
SCOPE
1.1 This test method describes the calibration or performance confirmation of the electronic pressure signals from thermal analysis apparatus.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 There is no ISO standard equivalent to this test method.
1.4 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
14-Mar-2010
ICS
17.200.20 - Temperature-measuring instruments
Technical Committee
E37 - Thermal Measurements
Drafting Committee
E37.10 - Fundamental, Statistical and Mechanical Properties
Current Stage
Ref Project

Relations

Replaced By
ASTM E2744-10(2015) - Standard Test Method for Pressure Calibration of Thermal Analyzers
Effective Date
01-Mar-2015
Referred By
ASTM E1142-23a - Standard Terminology Relating to Thermophysical Properties
Effective Date
15-Mar-2010

Buy Standard

ASTM E2744-10 - Standard Test Method for Pressure Calibration of Thermal AnalyzersASTM E2744-10 - Standard Test Method for Pressure Calibration of Thermal Analyzers
PreviousNext
Standard
ASTM E2744-10 - Standard Test Method for Pressure Calibration of Thermal Analyzers
English language
4 pages
sale 15% off
Preview
sale 15% off
Preview

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: E2744 − 10
StandardTest Method for
1
Pressure Calibration of Thermal Analyzers
This standard is issued under the fixed designation E2744; 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 E1782 Test Method for Determining Vapor Pressure by
Thermal Analysis
1.1 This test method describes the calibration or perfor-
E1858 Test Method for Determining Oxidation Induction
mance confirmation of the electronic pressure signals from
Time of Hydrocarbons by Differential Scanning Calorim-
thermal analysis apparatus.
etry
1.2 The values stated in SI units are to be regarded as
E2009 Test Methods for Oxidation Onset Temperature of
standard. No other units of measurement are included in this
Hydrocarbons by Differential Scanning Calorimetry
standard.
E2161 Terminology Relating to Performance Validation in
1.3 There is no ISO standard equivalent to this test method. Thermal Analysis
1.4 This standard does not purport to address all of the
3. Terminology
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 3.1 Definitions:
priate safety and health practices and determine the applica-
3.1.1 The technical terms used in this test method are
bility of regulatory limitations prior to use. defined in Terminologies E473, E1142, and E2161, including
calibration, Celsius, differential scanning calorimetry, high
2. Referenced Documents pressure, linearity, oxidative induction time, thermal analysis,
2 and vapor pressure.
2.1 ASTM Standards:
D5483 Test Method for Oxidation Induction Time of Lubri- 3.2 Definitions of Terms Specific to This Standard:
catingGreasesbyPressureDifferentialScanningCalorim- 3.2.1 absolute pressure, n—pressure measured relative to
etry zero pressure corresponding to empty space.
D6186 Test Method for Oxidation Induction Time of Lubri- 3.2.1.1 Discussion—Absolute pressure is atmospheric pres-
cating Oils by Pressure Differential Scanning Calorimetry sure plus gage pressure.
(PDSC)
3.2.2 atmospheric pressure, n—the pressure due to the
D5720 Practice for Static Calibration of Electronic
weight of the atmosphere.
Transducer-Based Pressure Measurement Systems for
3.2.2.1 Discussion—Atmospheric pressure varies with el-
Geotechnical Purposes
evation above sea level, acceleration due to gravity and
D5885 Test Method for Oxidative Induction Time of Poly-
weather conditions. Standard atmospheric pressure is
olefin Geosynthetics by High-Pressure Differential Scan-
101.325 kPa.
ning Calorimetry
3.2.3 barometer, n—an instrument for measuring atmo-
E473 Terminology Relating to Thermal Analysis and Rhe-
spheric pressure.
ology
3.2.4 gage pressure, n—pressure measured relative to atmo-
E537 Test Method for The Thermal Stability of Chemicals
spheric pressure.
by Differential Scanning Calorimetry
3.2.4.1 Discussion—Zero gage pressure is equal to atmo-
E1142 Terminology Relating to Thermophysical Properties
spheric pressure. Gage pressure is the difference between
absolute pressure and atmospheric pressure.
3.2.5 pressure, n—the force exerted to a surface per unit
1
ThistestmethodisunderthejurisdictionofASTMCommitteeE37onThermal
area.
Measurements and is the direct responsibility of Subcommittee E37.10 on
Fundamental, Statistical and Mechanical Properties.
3.2.6 vacuum, n—pressure less than atmospheric pressure.
Current edition approved March 15, 2010. Published August 2010. DOI:101520/
E2744-10.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 4. Summary of Test Method
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
4.1 The pressure (vacuum) signal generated by a thermal
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. analyzer is compared to a gage whose performance is known
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E2744 − 10
and traceable to a national metrology institute. The thermal pressure. Pressure relief shall be provided at pressures no
analyzer may be said to be in conformance if the performance greater than 1.2 times the maximum allowable working pres-
is within established limits. Alternately, the pressure signal sure.
may be calibrated using a two-point calibration method.
8. Preparation of Apparatus
5. Significance and Use 8.1 Assemble the apparatus so that the calibration pressure
gageisconnectedinparallelwiththepressuretransducerofthe
5.1 Most thermal analysis experiments are conducted und
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

This May Also Interest You

ASTM
ASTM E1363-23(Test Method)
Standard Test Method for Temperature Calibration of Thermomechanical Analyzers

SIGNIFICANCE AND USE
5.1 Thermomechanical analyzers are employed in their various modes of operation (penetration, expansion, flexure, etc.) to characterize a wide range of materials. In most cases, the value to be assigned in thermomechanical measurements is the temperature of the transition (or event) under study. Therefore, the temperature axis (abscissa) of all TMA thermal curves must be accurately calibrated either by direct reading of a temperature sensor or by adjusting the programmer temperature to match the actual temperature over the temperature range of interest.
SCOPE
1.1 This test method describes the temperature calibration of thermomechanical analyzers from −50 °C to 1500 °C. (See Note 1.)  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 Warning—Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Use caution when handling mercury and mercury-containing products. See the applicable product Safety Data Sheet (SDS) for additional information. The potential exists that selling mercury or mercury-containing products, or both, is prohibited by local or national law. Users must determine legality of sales in their location.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Section 7 and Note 12.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    5 pages
    English language
    sale 15% off
  • Standard
    5 pages
    English language
    sale 15% off
ASTM
ASTM E2918-23(Test Method)
Standard Test Method for Performance Validation of Thermomechanical Analyzers

SIGNIFICANCE AND USE
5.1 This test method may be used to determine and validate the performance of a particular thermomechanical analyzer apparatus.  
5.2 This test method may be used to determine and validate the performance of a particular method based upon thermomechanical analyzer temperature or length change measurements.  
5.3 This test method may be used to determine the repeatability of a particular apparatus, operator, or laboratory.  
5.4 This test method may be used for specification and regulatory compliance purposes.
SCOPE
1.1 This test method provides procedures for validating temperature and length change measurements of thermomechanical analyzers (TMA) and analytical methods based upon the measurement of temperature and length change. Performance parameters include temperature repeatability, linearity, and bias; and dimension change repeatability, detection limit, quantitation limit, linearity, and bias.  
1.2 Validation of apparatus performance and analytical methods is a necessary requirement for quality initiatives. Results may also be used for legal purposes.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    8 pages
    English language
    sale 15% off
  • Standard
    8 pages
    English language
    sale 15% off
ASTM
ASTM E1860-23(Test Method)
Standard Test Method for Elapsed Time Calibration of Thermal Analyzers

SIGNIFICANCE AND USE
5.1 Most thermal analysis experiments are carried out under increasing temperature conditions where temperature is the independent parameter. Some experiments, however, are carried out under isothermal temperature conditions where the elapsed time to an event is measured as the independent parameter. Isothermal Kinetics (Test Methods E2070), Thermal Stability (Test Method E487), Oxidative Induction Time (OIT) (Test Methods D3895, D4565, D5483, E1858, and Specification D3350) and Loss-on-Drying (Test Methods E1868) are common examples of these kinds of experiments.  
5.2 Modern scientific instruments, including thermal analyzers, usually measure elapsed time with excellent precision and accuracy. In such cases, it may only be necessary to confirm the performance of the instrument by comparison to a suitable reference. Only rarely will it may be required to correct the calibration of an instrument's elapsed time signal through the use of a calibration factor.  
5.3 It is necessary to obtain elapsed time signal conformity only to 0.1 times the repeatability relative standard deviation (standard deviation divided by the mean value) expressed as a percent for the test method in which the thermal analyzer is to be used. For those test methods listed in Section 2 this conformity is 0.1 %.
SCOPE
1.1 This test method describes the calibration or performance confirmation of the elapsed-time signal from thermal analyzers.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    3 pages
    English language
    sale 15% off
  • Standard
    3 pages
    English language
    sale 15% off
ASTM
ASTM E3142-18a(2023)(Test Method)
Standard Test Method for Thermal Lag of Thermal Analysis Apparatus

SIGNIFICANCE AND USE
5.1 Differing temperature rates-of-change may be required for different measurements (for example, Test Method E698). Temperature calibration changes as a function of temperature rate-of-change. The use of the known thermal lag of an apparatus may be used to adjust the temperature calibration of the apparatus obtained at one temperature rate-of-change with that at another required for a given applications. This adjustment procedure for temperature calibration is described in 8.1.  
5.2 This test method may be used in research, quality assurance, and specification acceptance.
SCOPE
1.1 This test method addresses the dependence of temperature calibration on the temperature rate-of-change. This test method describes the determination of the thermal lag of thermal analysis apparatus and its application to the modification of the temperature calibration for that apparatus obtained at alternative linear temperature rates-of-change.  
1.2 This test method is applicable, but not limited to, the temperature calibration of differential thermal analyzers (DTAs), differential scanning calorimeters (DSCs), thermogravimetric analyzers (TGAs), thermomechanical analyzers (TMAs), and dynamic mechanical analyzers (DMAs).  
1.3 This test method is applicable only to apparatus demonstrating a linear relationship between indicated temperature and temperature rate-of-change.  
1.4 The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    4 pages
    English language
    sale 15% off
ASTM
ASTM E1867-22(Test Method)
Standard Test Methods for Temperature Calibration of Dynamic Mechanical Analyzers

SIGNIFICANCE AND USE
5.1 Dynamic mechanical analyzers monitor changes in the viscoelastic properties of a material as a function of temperature and frequency, providing a means to quantify these changes. In most cases, the value to be assigned is the temperature of the transition (or event) under study. Therefore, the temperature axis (abscissa) of dynamic mechanical analysis thermal curves must be accurately calibrated by adjusting the apparent temperature scale to match the actual specimen temperature over the temperature range of interest.  
5.2 This test method is useful for research, quality assurance, and specification acceptance.
SCOPE
1.1 These test methods describe the temperature calibration of dynamic mechanical analyzers (DMA) from –100 °C to 300 °C.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    7 pages
    English language
    sale 15% off
  • Standard
    7 pages
    English language
    sale 15% off
ASTM
ASTM E2744-21(Test Method)
Standard Test Method for Pressure Calibration of Thermal Analyzers

SIGNIFICANCE AND USE
5.1 Most thermal analysis experiments are conducted under ambient pressure conditions using isothermal or temperature time rate of change conditions where time or temperature is the independent parameter. Some experiments, however, are conducted under reduced or elevated pressure conditions where pressure is an independent experimental parameter (Test Method E537). Oxidation Induction Times (Test Methods D5483, D5885, D6186, and E1858), Oxidation Onset Temperature (Test Method E2009), and the Vapor Pressure (Test Method E1782) are other examples of experiments conducted under elevated or reduced pressure (vacuum) conditions. Since in these cases pressure is an independent variable, the measurement system for this parameter shall be calibrated to ensure interlaboratory reproducibility.  
5.2 The dependence of experimental results on pressure is usually logarithmic rather than linear.
SCOPE
1.1 This test method describes the calibration or performance confirmation of the electronic pressure signals from thermal analysis apparatus.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    4 pages
    English language
    sale 15% off
  • Standard
    4 pages
    English language
    sale 15% off
ASTM
ASTM E1582-21(Test Method)
Standard Test Method for Temperature Calibration of Thermogravimetric Analyzers

SIGNIFICANCE AND USE
5.1 Thermogravimetric analyzers are used to characterize a broad range of materials. In most cases, one of the desired values to be assigned in thermogravimetric measurements is the temperature at which significant changes in specimen mass occur. Therefore, the temperature axis (abscissa) of all apparent-mass-change curves must be calibrated accurately, either by direct reading of a temperature sensor, or by adjusting the programmer temperature to match the actual temperature over the temperature range of interest. In the latter case, this is accomplished by the use of either melting point or magnetic transition standards.  
5.2 This test method permits interlaboratory comparison and intralaboratory correlation of instrumental temperature scale data.
SCOPE
1.1 This test method describe the temperature calibration of thermogravimetric analyzers over the temperature range from 25 °C to 1500 °C and is applicable to commercial and custom-built apparatus. This calibration may be accomplished by the use of either melting point standards or magnetic transition standards.  
1.2 The weight change curve in thermogravimetry results from a number of influences, some of which are characteristic of the specimen holder assembly and atmosphere rather than the specimen. The variations from instrument to instrument occur in the point of measurement of the temperature, the nature of the material, its size and packing, the geometry and composition of the specimen container, the geometry and design of the furnace, and the accuracy and sensitivity of the temperature sensor and displaying scales. These all contribute to differences in measured temperatures, which may exceed 20 °C. In addition, some sample holder assemblies will show variations of measured temperature with sample size or heating/cooling rate, or both. Since it is neither practical nor advisable to standardize sample holders or thermobalance geometries, instruments may be calibrated by measurement of the deviation of a melting or magnetic (Curie point) transition temperature from the standard reference temperature. This deviation can be applied as a correction term to subsequent measurements.  
1.3 This test method assumes that the indicated temperature of the instrument is linear over the range defined by a two-point calibration and that this linearity has been verified. These two calibration temperatures should be as close to the experimental measurements to be made as possible.  
1.4 This test method describes two procedures for temperature calibration of thermogravimetric analyzers using any type balance. Procedure A uses melting point standards for calibration. Procedure B uses magnetic transition standards for calibration.  
1.5 The data generated by these procedures can be used to correct the temperature scale of the instrument by either a positive or negative amount using either a one- or two-point temperature calibration procedure.  
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.7 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    6 pages
    English language
    sale 15% off
  • Standard
    6 pages
    English language
    sale 15% off
ASTM
ASTM E1953-20(Practice)
Standard Practice for Description of Thermal Analysis and Rheology Apparatus

SIGNIFICANCE AND USE
4.1 Section 5 identifies essential instrumentation and accessories required to perform thermal analysis, rheometry, or viscometry for a variety of different instruments. The appropriate generic instrument description should be included in any test method describing use or application of the thermal analysis, rheometry, or viscometry instrumentation described herein.  
4.2 Units included in these descriptions are used to identify needed performance criteria and are considered typical. Other units may be used when including these descriptions in a specific test method. Items underlined constitute required inputs specifically established for each test method (for example, sensitivity of temperature sensor).  
4.3 Additional components and accessories may be added as needed, with the appropriate performance requirements specified. Items listed in these descriptions but not used in a test method (for example, vacuum system) may be deleted.
SCOPE
1.1 This practice describes generic descriptions of apparatus used for thermal analysis or rheometry measurements and its purpose is to achieve uniformity in description of thermal analysis, rheometry, and viscometer instrumentation throughout standard test methods. These descriptions are intended to be used as templates for inclusion in any test method where the thermal analysis instrumentation described herein is cited.  
1.2 Each description contains quantifiable instrument performance requirements to be specified for each test method.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    4 pages
    English language
    sale 15% off
  • Standard
    4 pages
    English language
    sale 15% off
ASTM
ASTM E2067-23(Practice)
Standard Practice for Full-Scale Oxygen Consumption Calorimetry Fire Tests

SIGNIFICANCE AND USE
4.1 The oxygen consumption principle, used for the measurements described here, is based on the observation that, generally, the net heat of combustion is directly related to the amount of oxygen required for combustion (1).7 Approximately 13.1 MJ of heat are released per 1 kg of oxygen consumed. Test specimens in the test are burned in ambient air conditions, while being subjected to a prescribed external heating source.  
4.1.1 This technique is not appropriate for use on its own when the combustible fuel is an oxidizer or an explosive agent, which release oxygen. Further analysis is required in such cases (see Appendix X2).  
4.2 The heat release is determined by the measurement of the oxygen consumption, as determined by the oxygen concentration and the flow rate in the combustion product stream, in a full scale environment.  
4.3 The primary measurements are oxygen concentration and exhaust gas flow rate. Additional measurements include the specimen ignitability, the smoke obscuration generated, the specimen mass loss rate, the effective heat of combustion and the yields of combustion products from the test specimen.  
4.4 The oxygen consumption technique is used in different types of test methods. Intermediate scale (Test Method E1623, UL 1975) and full scale (Test Method D5424, Test Method D5537, Test Method E1537, Test Method E1590, Test Method E1822, ISO 9705, NFPA 265, NFPA 266, NFPA 267, NFPA 286, UL 1685) test methods, as well as unstandardized room scale experiments following Guide E603, using this technique involve a large instrumented exhaust hood, where oxygen concentration is measured, either standing alone or positioned outside a doorway. A large test specimen is placed either under the hood or inside the room. This practice is intended to address issues associated with equipment requiring a large instrumented hood and not stand-alone test apparatuses with small test specimens.  
4.4.1 Small scale test methods using this technique, such as Tes...
SCOPE
1.1 This practice deals with methods to construct, calibrate, and use full scale oxygen consumption calorimeters to help minimize testing result discrepancies between laboratories.  
1.2 The methodology described herein is used in a number of ASTM test methods, in a variety of unstandardized test methods, and for research purposes. This practice will facilitate coordination of generic requirements, which are not specific to the item under test.  
1.3 The principal fire-test-response characteristics obtained from the test methods using this technique are those associated with heat release from the specimens tested, as a function of time. Other fire-test-response characteristics also are determined.  
1.4 This practice is intended to apply to the conduction of different types of tests, including both some in which the objective is to assess the comparative fire performance of products releasing low amounts of heat or smoke and some in which the objective is to assess whether flashover will occur.  
1.5 This practice does not provide pass/fail criteria that can be used as a regulatory tool, nor does it describe a test method for any material or product.  
1.6 For use of the SI system of units in referee decisions, see IEEE/ASTM SI-10. The units given in parentheses are provided for information only.  
1.7 This standard is used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions.
Note 1: This is the standard caveat described in section F2.2.2.1 of the Form and Style for ASTM Standards manual for fire-test-response standards. In actual fact, this practice does not provide quantitative measures.  
1.8 Fire testing of products and materials is inherently hazardous, and adequate safeguar...

  • Standard
    25 pages
    English language
    sale 15% off
  • Standard
    25 pages
    English language
    sale 15% off
ASTM
ASTM E839-23(Test Method)
Standard Test Methods for Sheathed Thermocouples and Sheathed Thermocouple Cable

SIGNIFICANCE AND USE
5.1 This standard provides a description of test methods used in other ASTM specifications to establish certain acceptable methods for characterizing thermocouple assemblies and thermocouple cable. These test methods define how those characteristics shall be determined.  
5.2 The usefulness and purpose of the included tests are given for the category of tests.  
5.3 Warning—Users should be aware that certain characteristics of thermocouples might change with time and use. If a thermocouple’s designed shipping, storage, installation, or operating temperature has been exceeded, that thermocouple’s moisture seal may have been compromised and may no longer adequately prevent the deleterious intrusion of water vapor. Consequently, the thermocouple’s condition established by test at the time of manufacture may not apply later. In addition, inhomogeneities can develop in thermoelements because of exposure to higher temperatures, even in cases where maximum exposure temperatures have been lower than the suggested upper use temperature limits specified in Table 1 of Specification E608/E608M. For this reason, calibration of thermocouples destined for delivery to a customer is not recommended. Because the emf indication of any thermocouple depends upon the condition of the thermoelements along their entire length, as well as the temperature profile pattern in the region of any inhomogeneity, the emf output of a used thermocouple will be unique to its installation. Because temperature profiles in calibration equipment are unlikely to duplicate those of the installation, removal of a used thermocouple to a separate apparatus for calibration is not recommended. Instead, in situ calibration by comparison to a similar thermocouple known to be good is often recommended.
SCOPE
1.1 This document lists methods for testing Mineral-Insulated, Metal-Sheathed (MIMS) thermocouple assemblies and thermocouple cable, but does not require that any of these tests be performed nor does it state criteria for acceptance. The acceptance criteria are given in other ASTM standard specifications that impose this testing for those thermocouples and cable. Examples from ASTM thermocouple specifications for acceptance criteria are given for many of the tests. These tabulated values are not necessarily those that would be required to meet these tests, but are included as examples only.  
1.2 These tests are intended to support quality control and to evaluate the suitability of sheathed thermocouple cable or assemblies for specific applications. Some alternative test methods to obtain the same information are given, since in a given situation, an alternative test method may be more practical. Service conditions are widely variable, so it is unlikely that all the tests described will be appropriate for a given thermocouple application. A brief statement is made following each test description to indicate when it might be used.  
1.3 The tests described herein include test methods to measure the following properties of sheathed thermocouple material and assemblies.  
1.3.1 Insulation Properties:  
1.3.1.1 Compaction—direct method, absorption method, and tension method.
1.3.1.2 Thickness.
1.3.1.3 Resistance—at room temperature and at elevated temperature.  
1.3.2 Sheath Properties:  
1.3.2.1 Integrity—two water test methods and mass spectrometer.
1.3.2.2 Dimensions—length, diameter, and roundness.
1.3.2.3 Wall thickness.
1.3.2.4 Surface—gross visual, finish, defect detection by dye penetrant, and cold-lap detection by tension test.
1.3.2.5 Metallurgical structure.
1.3.2.6 Ductility—bend test and tension test.  
1.3.3 Thermoelement Properties:  
1.3.3.1 Calibration.
1.3.3.2 Homogeneity.
1.3.3.3 Drift.
1.3.3.4 Thermoelement diameter, roundness, and surface appearance.
1.3.3.5 Thermoelement spacing.
1.3.3.6 Thermoelement ductility.
1.3.3.7 Metallurgical structure.  
1.3.4 Thermocouple Assembly Properti...

  • Standard
    18 pages
    English language
    sale 15% off
  • Standard
    18 pages
    English language
    sale 15% off