ASTM_F_2070_-_00_2011.pdf

Designation:F207000(Reapproved 2011)An American National StandardStandard Specification forTransducers,Pressure and Differential,Pressure,Electricaland Fiber-Optic1This standard is issued under the fixed designation F2070;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.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 the requirements for pressureand differential pressure transducers for general applications.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.Where information is to be specified,it shall be stated inSI units.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 prior to use.1.4 Special requirements for naval shipboard applicationsare included in Supplementary Requirements S1,S2,and S3.2.Referenced Documents2.1 ASTM Standards:2D3951 Practice for Commercial Packaging2.2 ANSI/ISA Standards:ANSI/ISA S37.1 Electrical Transducer Nomenclature andTerminology32.3 ISO Standard:ISO 9001 Quality SystemModel for Quality Assurance inDesign/Development,Production,Installation,and Ser-vicing43.Terminology3.1 Terms marked with(ANSI/ISAS37.1)are taken directlyfrom ANSI/ISA S37.1(R-1982)and are included for theconvenience of the user.3.2 Definitions:3.2.1 Terminology consistent with ANSI/ISA S37.1 shallapply,except as modified by the definitions listed as follows:3.2.2 absolute pressurepressure measured relative to zeropressure(vacuum).(ANSI/ISA S37.1)3.2.3 ambient conditionsconditions such as pressure andtemperature of the medium surrounding the case of thetransducer.(ANSI/ISA S37.1)3.2.4 burst pressurethe maximum pressure applied to thetransducer sensing element without rupture of the sensingelement or transducer case as specified.3.2.5 calibrationthe test during which known values ofmeasurands are applied to the transducer and correspondingoutput readings are recorded under specified conditions.(ANSI/ISA S37.1)3.2.6 common mode pressurethe common mode pressureis static line pressure applied simultaneously to both pressuresides of the transducer for the differential pressure transduceronly.3.2.7 differential pressurethe difference in pressure be-tween two points of measurement.(ANSI/ISA S37.1)3.2.8 environmentalconditionsspecifiedexternalconditions,such as shock,vibration,and temperature,to whicha transducer may be exposed during shipping,storage,handling,and operation.(ANSI/ISA S37.1)3.2.9 errorthe algebraic difference between the indicatedvalue and the true value of the measurand.(ANSI/ISA S37.1)3.2.10 fiber-optic pressure transducera device that con-verts fluid pressure,by means of changes in fiber-opticproperties,to an output that is a function of the appliedmeasurand.The fiber-optic pressure transducer normally con-sists of a sensor head,optoelectronics module,and connector-ized fiber-optic cable.3.2.11 hysteresisthe maximum difference in output,at anymeasurand value within the specified range,when the value isapproached first with increasing and then with decreasingmeasurand.(ANSI/ISA S37.1)3.2.12 insulation resistancethe resistance measured be-tween insulated portions of a transducer and between the1This specification is under the jurisdiction of ASTM Committee F25 on Shipsand Marine Technology and is the direct responsibility of Subcommittee F25.10 onElectrical.Current edition approved April 1,2011.Published April 2011.Originallyapproved in 2000.Last previous edition approved in 2006 as F2070 00(2006).DOI:10.1520/F2070-00R11.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036.4Available from International Organization for Standardization(ISO),1 rue deVaremb,Case postale 56,CH-1211,Geneva 20,Switzerland.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 insulated portions of a transducer and ground when a specifieddc voltage is applied under specified conditions.3.2.13 line pressurethe pressure relative to which a dif-ferential pressure transducer measures pressure.(ANSI/ISA S37.1)3.2.14 operating environmental conditionsenvironmentalconditions during exposure to which a transducer must performin some specified manner.(ANSI/ISA S37.1)3.2.15 opticalinvolving the use of light-sensitive devicesto acquire information.3.2.16 optical fibera very thin filament o