Terminology Relating to Thermometry and Hydrometry

SCOPE
1.1 This terminology is a compilation of definitions of terms used by ASTM Committee E20 on Temperature Measurement.
1.2 Terms with definitions generally applicable to the fields of thermometry and hydrometry are listed in 3.1.
1.3 Terms with definitions applicable only to the indicated standards in which they appear are listed in 3.2.
1.4 Information about the International Temperature Scale of 1990 is given in Appendix X1 .

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Publication Date
09-Oct-2001
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ASTM E344-01a - Terminology Relating to Thermometry and Hydrometry
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: E 344 – 01a
Terminology Relating to
1
Thermometry and Hydrometry
This standard is issued under the fixed designation E344; the number immediately following the designation indicates the year 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 (ε) indicates an editorial change since the last revision or reapproval.
1. Scope E 667 Specification for Maximum Self-Registering
2
Mercury-in-Glass Clinical Thermometers
1.1 Thisterminologyisacompilationofdefinitionsofterms
E696 Specification for Tungsten-Rhenium Alloy Thermo-
used byASTM Committee E20 onTemperature Measurement.
2
couple Wire
1.2 Terms with definitions generally applicable to the fields
E710 TestMethodforComparingEMFStabilitiesofBase-
of thermometry and hydrometry are listed in 3.1.
Metal Thermoelements in Air Using Dual, Simultaneous,
1.3 Terms with definitions applicable only to the indicated
2
Thermal-EMF Indicators
standards in which they appear are listed in 3.2.
E825 Specification for Phase Change-Type Disposable Fe-
1.4 Information about the International Temperature Scale
verThermometerforIntermittentDeterminationofHuman
of 1990 is given in Appendix X1.
2
Temperature
2. Referenced Documents
E 839 Test Methods for Sheathed Thermocouples and
2
Sheathed Thermocouple Material
2.1 ASTM Standards:
2
E1 Specification for ASTM Thermometers E879 Specification for Thermistor Sensors for Clinical
2
Laboratory Temperature Measurements
E77 Test Method for Inspection and Verification of Ther-
2
mometers E1061 Specification for Direct-Reading Liquid Crystal
2
2
Forehead Thermometers
E100 Specification for ASTM Hydrometers
E126 Test Method for Inspection and Verification of Hy- E1104 Specification for Clinical Thermometer Probe Cov-
2
2
ers and Sheaths
drometers
E207 Test Method for Thermal EMF Test of Single Ther- E1112 Specification for Electronic Thermometer for Inter-
2
mittent Determination of Patient Temperature
moelement Materials by Comparison with a Reference
3
Thermoelement of Similar EMF-Temperature Properties E1129/E1129M Specification for Thermocouple Connec-
2
E220 Test Method for Calibration of Thermocouples by tors
2
E1137 Specification for Industrial Platinum Resistance
Comparison Techniques
2
E230 Specification and Temperature-Electromotive Force Thermometers
2
E 1159 Specification for Thermocouple Materials,
(EMF) Tables for Standardized Thermocouples
2
E452 Test Method for Calibration of Refractory Metal Platinum-Rhodium Alloys, and Platinum
2
E1256 Test Methods for Radiation Thermometers (Single
Thermocouples Using a Radiation Thermometer
2
E574 Specification for Duplex, Base Metal Thermocouple Waveband Type)
2
E1299 Specification for Reusable Phase-Change-Type Fe-
Wire with Glass Fiber or Silica Fiber Insulation
2
E585/E585M Specification for a RadiationThermometer verThermometerforIntermittentDeterminationofHuman
2
Temperature
E601 TestMethodforComparingEMFStabilityofSingle-
2
Element Base-Metal Thermocouple Materials in Air E1350 GuideforTestingSheathedThermocouplesPriorto,
2
During, and After Installation
E608 Specification for Metal-Sheathed Base-Metal Ther-
2
mocouples E1502 GuideforUseofFreezing-PointCellsforReference
2
Temperatures
E644 Test Methods for Testing Industrial Resistance Ther-
2 2
mometers E1594 Guide for Expression of Temperature
2
E1750 Guide for Use of Water Triple Point Cells
E 1965 Specification for Infrared Thermometers for Inter-
1
This terminology is under the jurisdiction of ASTM Committee E20 on
2
mittent Determination of Patient Temperature
Temperature Measurement and is the direct responsibility of Subcommittee E20.91
on Editorial and Terminology.
3. Terminology
Current edition approved Oct. 10, 2001. Published November 2001. Originally
published as E344–68. Last previous edition E344–01.
3.1 Definitions:
2
Annual Book of ASTM Standards, Vol 14.03.
3
Annual Book of ASTM Standards, Vol 06.03.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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E 344
accuracy, n—of a temperature measurement, closeness of coaxial thermocouple—a thermocouple consisting of a ther-
agreement between the result of a temperature measurement moelement in wire form within a thermoelement in tube
and a true value of the temperature. form with the wire being electrically insulated from the tube
except at the measuring junction.
DISCUSSION—Accuracy is a qualitative concept.
compensating extension wires, n—those extension wires
base metal thermocouple, n—thermocouple whose thermo-
fabricated from materials basically different in composition
elements are composed primarily of base metals and their
from the thermocouple.
alloys. (See also noble metal thermocouple;
...

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