1、Designation:E299515aStandard Specification forASTM Thermohydrometers with Integral Low-HazardThermometers1This standard is issued under the fixed designation E2995;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revi
2、sion.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers glass thermohydrometers ofvarious scale graduation systems,intended for use in a varietyof ASTM Test Metho
3、ds.1.2 The thermohydrometers presented in this standard arenot exact replacements for the thermohydrometers in Specifi-cation E100;the thermometers have larger maximum permis-sible scale errors than do their Hg-filled counterparts.The usershould decide if these thermohydrometers are appropriate foru
4、se in his or her application.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations pr
5、ior to use.2.Referenced Documents2.1 ASTM Standards:2D287 Test Method for API Gravity of Crude Petroleum andPetroleum Products(Hydrometer Method)D1250 Guide for Use of the Petroleum Measurement TablesD3290 Specification for Bond and Ledger Papers for Perma-nent Records(Withdrawn 2010)3E77 Test Metho
6、d for Inspection and Verification of Ther-mometersE100 Specification for ASTM HydrometersE126 Test Method for Inspection,Calibration,and Verifica-tion of ASTM HydrometersE344 Terminology Relating to Thermometry and Hydrom-etry2.2 ISO StandardsISO 1768:1975 Glass HydrometersConventional Valuefor the
7、Thermal Cubic Expansion Coefficient(for Use inthe Preparation of Measurement Tables for Liquids)3.Terminology3.1 DefinitionsThe definitions given in Terminology E344apply.3.2 Definitions of Terms Specific to This Standard:3.2.1 ledger paper,na paper characterized by strength,high tearing resistance,
8、eraseability,water resistance,inkreceptivity,uniformity of surface,and smoothness.3.2.1.1 DiscussionOriginally,ledger paper was used espe-cially for pen and ink records.Most ledger papers are surfacesized,frequently subjected to appreciable wear,and must havea high degree of permanence and durabilit
9、y.3.2.2 length of the scale,nlength of the nominal range inthe stem,not including graduations extending above and belowthe nominal limits.3.2.3 thermohydrometer,nglass hydrometer having anintegral thermometer.3.2.4 top of the thermohydrometer,ntop of the finishedinstrument.3.2.5 total length,noveral
10、l length of the finished instru-ment.4.Specifications4.1 Thermohydrometers shall conform to the detailed speci-fications in Table 1 and to the general requirements specified inSections 5 15.4.2 Thermohydrometers shall conform to the inspectioncriteria found in Section 16 and the calibration and veri
11、ficationcriteria found in Section 14.4.3 Thermohydrometers manufactured to previous revisionsof this specification shall retain the sameASTM status as thosemeeting current specifications.4.4 At time of purchase,scale errors shall not exceed themaximum permissible scale error found in Table 1.NOTE1Ca
12、utionUsers should be aware that both temperature anddensity indications of thermohydrometers may change with rough1This specification is under the jurisdiction of ASTM Committee E20 onTemperature Measurement and is the direct responsibility of Subcommittee E20.05on Liquid-in-Glass Thermometers and H
13、ydrometers.Current edition approved Nov.1,2015.Published November 2015.Originallyapproved in 1910.Last previous edition approved in 2015 as E2995 15.DOI:10.1520/E2995-15A2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual B
14、ook of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 TA
15、BLE 1 Specifications for ASTM ThermohydrometersAPI Gravity Thermohydrometersfor Petroleum Products and Other Liquids of Similar Surface Tensions(33 dynes/cm or less)Thermometer Scale in BodyASTM Thermohydrometer No.Nominal API Gravity Range,degS550HL-14-6 to+6S551HL-14-1 to 11S552HL-149 to 21S553HL-
16、1419 to 31S554HL-1429 to 41S555HL-1439 to 51S556HL-1449 to 61S557HL-1459 to 71S558HL-1469 to 81S559HL-1479 to 91S560HL-1489 to 101S561HL-1437 to 49S562HL-1464 to 76Thermohydrometer DimensionsTotal length,mm374 to 387Body diameter,mm18 to 25Stem diameter,min,mm4.0Hydrometer ScaleStandard temperature,F60Subdivisions,API0.1Intermediate lines at,API0.5Main(numbered)lines at,API1.0Scale error at any point not to exceed,API0.1Length of nominal scale,mm125 to 145Thermometer ScaleRange,F0 to 150Immersio
