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十万天平相关标准参考信息

GB/T 7966-2022 声学 超声功率测量 辐射力天平法及其要求
简介:
信息:ICS:17.140 CCS:A59 发布:2022-03-09 实施:2022-10-01 00:00:00.0

JJG 156-2016 架盘天平
简介:本规程适用于双盘、单杠杆、等臂式架盘天平(以下简称“天平”)的首次检定、后续检定及使用中检查。
信息:ICSCCS:A53 发布:2016-11-25 实施:2017-05-25

DIN 8119-4-2007 台秤.第4部分:落地天平和自重天平的设计荷载
简介:
信息:ICS:17.100 CCS:N13 发布:2007-07 实施

GB/T 26645.4-2018 粒度分析 液体重力沉降法 第4部分:天平法
简介:GB/T 26645的本部分规定了采用称量液体重力沉降颗粒的质量来分析粒度分布的方法。本方法通过直接测量颗粒的质量并给出等效球径的粒径分布。采用液体重力沉降法测量的典型样品粒径范围为1 μm~100 μm,同时应满足雷诺系数不大于0.25的沉降条件。
信息:ICS:19.120 CCS:A28 发布:2018-07-13 实施:2019-02-01

ASTM D7739-11(2016) 通过石英晶体微量天平测定热氧化稳定性的标准实践
简介:
信息:ICS:75.160.20 CCS发布:2016-04-01 实施

ASTM D4753-2007 评定、选择和规范土壤、岩石和结构材料测试用天平和标准砝码的标准指南
简介:This guide provides those using standards related to soil, rock, and related construction materials, with a means for selecting the balance required for a particular standard. This guide provides those writing standards pertaining to soil, rock, and related construction materials with a means for specifying the balance capabilities required for a particular standard and for describing the balance selected in a uniform fashion. This guide provides agencies conducting soil, rock, and related construction materials, testing with guidance for selecting and evaluating general purpose balances and standard masses. This guide provides inspection organizations with criteria for evaluating general purpose balances and standard masses. 1.1 This guide provides minimum requirements for general-purpose scales, balances, and standard masses used in testing soil, rock, and related construction materials.1.2 This guide provides guidance for evaluating, selecting, and specifying general purpose scales, balances, and standard masses used in testing soil, rock, and related construction materials.1.3 The accuracy requirements for balances and scales are specified in terms of the combined effect of all sources of error contributing to overall balance performance. The measurement of specific sources of error and consideration of details pertaining to balance construction have been intentionally avoided.1.4 This guide does not include requirements for balances and scales having accuracies greater than those generally required in testing soil, rock, and related construction materials or for research programs or specialized testing requirements.1.5 This guide does not apply to nongraduated balances.1.6 This guide does not address the methods used to verify or quantify specific parameters dealing with balances and scales. For a description of tests used in evaluating balance performance, see NIST Handbook 44.1.7 This guide is not intended to be used as a specification for the purchase of balances and scales. Note 1The National Institute of Standards and Technology (NIST), formerly the National Bureau of Standards (NBS), and the International Organization of Legal Metrology (OIML) publish standards or practices that specify construction requirements as well as performance guides for balances. ASTM, OIML, and NIST publish construction standards and tolerances for standard masses. Note 2The terms "mass" and "determine the mass of" are used in this standard instead of the more commonly used terms "weight" and "weigh" to comply with standard metric practice. In addition, the term "standard mass(es)" is used instead of standard "standard weight(s)" when referring to a piece of material of known specified mass used to compare or measure the mass of other masses.1.8 This guide offers an organized collection of information or a series of options and does not recommend a specific course of action. This document cannot replace education or experience and should be used in conjunction with professional judgement. Not all aspects of this guide may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged nor should this document be applied without consideration of a project''s many unique aspects. The word "Standard" in the title of this document means only that the document has been approved through the ASTM consensus process.
信息:ICS:17.060 (Measurement of volume, mass, density, visc CCS:N13 发布:2007 实施

GB/T 26645.4-2018 粒度分析 液体重力沉降法 第4部分:天平法
简介:
信息:ICS:19.120 CCS:A28 发布:2018-07-13 实施:2019-02-01 00:00:00.0

QB/T 2087-2016 架盘天平
简介:本标准规定了架盘天平(以下简称为“天平”)的定义、产品分类、计量要求和技术要求、试验方法、检验规则和标志、包装、运输、贮存。本标准适用于由罗伯威尔机构和杠杆原理构成的天平。
信息:ICS:17.060 CCS:N61 发布:2016-01-15 实施:2016-07-01

JJG 98-2006 机械天平检定规程
简介:本规程适用于机械杠杆式天平(以下简称天平)的首次检定、后续检定和使用中检验。
信息:ICSCCS:N13 发布:2006-09-06 实施:2007-03-06

GB/T 32704-2016 实验室仪器及设备安全规范 天平仪器
简介:
信息:ICSCCS发布:2016-06-14 实施:2017-01-01

QX/T 307-2015 大气气溶胶质量浓度观测.锥管振荡微天平法
简介:本标准规定了锥管振荡微天平法连续测量大气气溶胶质量浓度的技术指标、安装要求、检查、维护与标校、数据记录和处理等内容。本标准适用于锥管振荡微天平法对大气气溶胶质量浓度的观测、资料分析和应用。
信息:ICS:07.060 CCS:A47 发布:2015-12-11 实施:2016-04-01

ASTM D6831-05a 使用堆叠式 惯性微量天平采样和确定堆积气体中的颗粒物的标准测试方法
简介:
信息:ICS:07.100.01 CCS发布:2005-10-01 实施

GB/T 30436-2013 静水力学天平
简介:本标准规定了静水力学天平的分类和基本参数、要求、试验方法、检验规则、标志及包装、运输、贮存。本标准适用于根据阿基米德定律原理,测出被测物在空气中的质量与浸在水中的质量之差,得出被测物的体积从而计算出被测物的密度(密度>1 g/cm)的静水力学天平(以下简称天平)。
信息:ICS:17.060 CCS:N61 发布:2013-12-31 实施:2014-08-01

ASTM D4753-15 评估 选择和指定用于土壤 岩石和建筑材料测试的天平和标准质量标准指南
简介:
信息:ICS:17.060 CCS发布:2015-05-01 实施

ASTM E898-88(2005) 测试顶部载荷 直接读取实验室秤和天平的标准测试方法
简介:
信息:ICS:17.100 CCS发布:2005-10-01 实施

GB/T 25107-2010 机械天平
简介:本标准规定了机械天平的分类及基本参数、要求、试验方法、检验规则、标志和包装、运输、贮存。本标准适用于利用杠杆原理测定物质质量的机械天平(以下简称天平)。本标准不适用于真空天平、热天平、遥控天平、自动记录天平与上皿式天平和按协议制造的天平。
信息:ICS:17.060 CCS:N61 发布:2010-09-02 实施:2010-12-01

DB34/T 2267-2014 粒度分析 液体重力沉降天平法
简介:本标准规定了采用沉降天平法分析颗粒在液体重力场下的粒度方法。 本标准适用于粒径范围为 0.5 μm~100 μm 的固体颗粒,同时满足雷诺系数小于 0.25 的沉降条件。
信息:ICS:19.120 CCS:A 28 发布:2014-12-29 实施:2015-01-29

ASTM D6831-05 使用堆叠式 惯性微量天平采样和确定堆积气体中的颗粒物的标准测试方法
简介:
信息:ICS:07.100.01 CCS发布:2005-06-01 实施

GB/T 7966-2009 声学.超声功率测量.辐射力天平法及性能要求
简介:本标准规定了基于使用辐射力天平测定超声换能器总的辐射声功率的方法;建立了由靶获取待测声场并使用辐射力天平进行测量的原理;明确了辐射力方法在发生空化和温升情况下的使用限制;确定了辐射力方法在存在发散和聚集波束情况下的定量使用限制;提供了评估所有测量不确定度的信息。本标准适用于:使用辐射力天平,频率范围从0.5MHz-25MHz,超声功率不超过1W的测量;使用辐射力天平,频率范围从0.75MHz-5MHz,超声功率不超过20W的测量;超声换能器总的声功率的测量,更适用于准直良好的波束;使用重力型或力反馈型的辐射力天平。
信息:ICS:17.140 CCS:A59 发布:2009-09-30 实施:2009-12-01

ASTM E898-88(2013) 测试顶部载荷 直接读取实验室秤和天平的标准测试方法
简介:
信息:ICS:17.100 CCS发布:2013-12-01 实施

SANS 302-2005 需遵守法定计量管制的非自动式、未命名杆秤和天平
简介:Specifies the metrological and technical requirements for non-automatic, undenominated beam scales and balances that are subject to metrological control in terms of legal metrology legislation.
信息:ICS:17.060 CCS发布:2005-04-01 实施:2005-04-01

GB/T 4168-1992 非自动天平 杠杆式天平
简介:
信息:ICS:/ CCS:/ 发布:1992-11-04 实施:0000-00-00

ASTM D6831-11 使用堆叠式 惯性微量天平采样和确定堆积气体中的颗粒物的标准测试方法
简介:
信息:ICS:07.100.01 CCS发布:2011-11-15 实施

ASTM D6831-2005a 利用惯性微量天平在烟囱内取样并测定烟气中颗粒物质的标准试验方法
简介:The measurement of particulate matter is widely performed to characterize emissions from stationary sources in terms of total emission rates to the atmosphere for regulatory purposes. This test method is particularly well suited for use in performance assessment and optimization of particulate matter control systems, continuous particulate matter emissions monitoring systems and the measurement of low concentration particulate matter laden gas streams in the range of 0.2 mg/m3 to 50 mg/m3.1.1 This test method describes the procedures for determining the mass concentration of particulate matter in gaseous streams using an automated, in-stack test method. This method, an in-situ, inertial microbalance, is based on inertial mass measurement using a hollow tube oscillator. This method is describes the design of the apparatus, operating procedure, and the quality control procedures required to obtain the levels of precision and accuracy stated.1.2 This method is suitable for collecting and measuring filterable particulate matter concentrations in the ranges 0.2 mg/m3 and above taken in effluent ducts and stacks.1.3 This test method may be used for calibration of automated monitoring systems (AMS). If the emission gas contains unstable, reactive, or semi-volatile substances, the measurement will depend on the filtration temperature, and this method (and other in-stack methods) may be more applicable than out-stack methods for the calibration of automated monitoring systems.1.4 This test method can be employed in sources having gas temperature up to 200C and having gas velocities from 3 to 27 m/s.1.5 This test method includes a description of equipment and methods to be used for obtaining and analyzing samples and a description of the procedure used for calculating the results.1.6 Stack temperatures limitation for this test method is approximately 200C (392F).1.7 This test method may be also be limited from use in sampling gas streams that contain fluoride, or other reactive species having the potential to react with or within the sample train.1.8 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.
信息:ICS:07.100.01 (Microbiology in general) CCS:Z15 发布:2005 实施

GB/T 4168-1992 非自动天平 杠杆式天平
简介:本标准规定了非自动天平中杠杆式天平(以下简称天平)的基本参数、技术要求、试验方法、检验规则与标志、包装、运输、储存。 本标准适用准确度级别为1×10~1×10,最大称量范围为1g~500kg刀刃支承式的单杠杆式天平。 本标准不适用于真空天平、热天平、遥控天平、自动记录天平与上皿式天平和按协议制造的出口天平。
信息:ICS:17.060 CCS:N61 发布:1992-11-04 实施:1993-08-01

JB/T 9483-2011 天平非金属支承件
简介:本标准规定了天平用平面支承、槽形支承、锥形支承和支力销等非金属支承件的分类、型号标记、材料和结构、要求、试验方法、检验规则及标志、包装和贮存。本标准适用于天平的非金属支承件(以下简称非金属支承件)。
信息:ICS:19 CCS:N05 发布:2011-08-15 实施:2011-11-01

ASTM B808-2005 用石英晶体微量天平监测大气腐蚀室的标准试验方法
简介:Corrosion film growth with thicknesses varying from a monolayer of atoms up to 1 x03BC;m can readily be measured on a continuous, real-time, in-situ, basis with QCMs. The test results obtained for this test method are influenced by various factors, including geometrical effects, temperature, humidity, film thickness, film materials, electrode conditions, gases in the corrosion chamber, atmospheric pressure, and so forth. Calibration of coated crystals and instrumentation and reproducible crystal operating conditions are necessary for consistent results.1.1 This test method monitors the reactivity of a gaseous test environment in which metal surfaces (for example, electrical contacts, assembled printed wiring boards, and so forth) and other materials subject to pollutant gas attack undergo accelerated atmospheric corrosion testing. This test method is applicable to adherent corrosion films whose total corrosion film thickness ranges from a few atomic monolayers to approximately a micrometre.1.2 The test method provides a dynamic, continuous, in-situ, procedure for monitoring the corrosion rate in corrosion chambers; the uniformity of corrosion chambers; and the corrosion rate on different surfaces. Response time in the order of seconds is possible.1.3 With the proper samples, the quartz crystal microbalance (QCM) test method can also be used to monitor the weight loss from a surface as a result of the desorption of surface species (that is, reduction of an oxide in a reducing atmosphere). (Alternative names for QCM are quartz crystal oscillator, piezoelectric crystal oscillator, or thin-film evaporation monitor.)1.4 This test method is not sufficient to specify the corrosion process that may be occurring in a chamber, since a variety of pollutant gases and environments may cause similar weight gains.1.5 This test method is generally not applicable to test environments in which solid or liquid particles are deposited on the surface of the quartz crystal.1.6 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 become familiar with all hazards including those identified in the appropriate Material Safety Data Sheet for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.1.7 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.
信息:ICS:77.060 (Corrosion of metals) CCS:H25 发布:2005 实施

GB/T 7898-1987 杠杆式吨位天平
简介:本标准适用于刀刃支承的杠杆式吨位天平(简称吨位天平)。 本标准不适用于具有真空、动态称量和其他专用的杠杆式天平。
信息:ICS:17.060 CCS:N61 发布:1987-06-06 实施:1988-01-01

JB/T 9482-2011 天平刀子、刀承
简介:本标准规定了天平刀子、刀承的分类、型号标记、材料和结构、要求、试验方法、检验规则及标志、包装和贮存。本标准适用于最大称量1g~100kg,准确度等级为1×10~1×10等级天平用刀子、刀承(以下简称刀子、刀承)。
信息:ICS:19 CCS:N05 发布:2011-08-15 实施:2011-11-01

ASTM D6831-2005 利用惯性微量天平在烟囱内取样并测定烟气中颗粒物质的标准试验方法
简介:1.1 This test method describes the procedures for determining the mass concentration of particulate matter in gaseous streams using an automated, in-stack test method. This method, an in-situ, inertial microbalance, is based on inertial mass measurement using a hollow tube oscillator. This method is describes the design of the apparatus, operating procedure, and the quality control procedures required to obtain the levels of precision and accuracy stated.1.2 This method is suitable for collecting and measuring filterable particulate matter concentrations in the ranges 0.2 mg/m3 and above taken in effluent ducts and stacks.1.3 This test method may be used for calibration of automated monitoring systems (AMS). If the emission gas contains unstable, reactive, or semi-volatile substances, the measurement will depend on the filtration temperature, and this method (and other in-stack methods) may be more applicable than out-stack methods for the calibration of automated monitoring systems.1.4 This test method can be employed in sources having gas temperature up to 200C and having gas velocities from 3 to 27 m/s.1.5 This test method includes a description of equipment and methods to be used for obtaining and analyzing samples and a description of the procedure used for calculating the results.1.6 Stack temperatures limitation for this test method is approximately 200C (392F).1.7 This test method may be also be limited from use in sampling gas streams that contain fluoride, or other reactive species having the potential to react with or within the sample train.1.8 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.
信息:ICS:07.100.01 (Microbiology in general) CCS:Z15 发布:2005 实施

GB/T 5157-1985 金属粉末粒度分布的测定 沉降天平法
简介:本标准规定了金属粉末粒度分布的测定方法-沉降天平法。 本标准适用于在液体介质中,能够分散的金属粉末,包括难熔金属及合金粉末,如钨、铝、铜、铁粉末。 本标准不适于片状、纤维状及其他形状极不规则的粉末;不适于含有润滑剂或粘结剂的粉末。对于结团现象严重或组元的密度不同的混合粉末,也不宜采用本标准。
信息:ICS:77.040.30 CCS:H71 发布:1985-05-08 实施:1986-02-01

ASTM D7739-11 通过石英晶体微量天平测定热氧化稳定性的标准实践
简介:
信息:ICS:75.160.20 CCS发布:2011-06-01 实施

JJG 171-2004 液体相对密度天平
简介:
信息:ICSCCS:A53 发布:2004-06-04 实施:2004-12-01

GB/T 4195-1984 钨、钼粉末粒度分布测试方法(沉降天平法)
简介:本标准适用于钨钼等粉末的平均粒度及粒度分布的测定。本标准方法最适宜的测量范围为1~40Um。
信息:ICS:77.040.30 CCS:H21 发布:1984-03-09 实施:1984-11-01

SN/T 0188.6-2011 进出口商品衡器鉴重规程.第6部分:天平鉴重
简介:本部分规定了进出口商品天平鉴重的基本要求、鉴重方法和一般程序。本部分适用于进出口商品天平鉴重。
信息:ICSCCS:N13 发布:2011-05-31 实施:2011-12-01

AS 60068.2.54-2004 环境试验.试验.Ta试验:湿润天平法焊接试验
简介:Part of a suite of Standards that adopt the IEC 60068 series of Standards as Australian Standards. The series contains fundamental information on environmental testing procedures and severities of tests, including information on atmospheric conditions fo
信息:ICS:19.040;29.020 CCS发布:2004-06-03 实施

GB 7898-1987 杠杆式吨位天平 {新定价}
简介:
信息:ICSCCS发布实施

GJB 2244A-2011 风洞应变天平规范
简介:本规范规定了风洞应变天平(以下简称天平)设计、加工、电阻应变计粘贴、检验与校准、交货、使用与维护等的详细要求。本规范适用于飞行器全模型风洞测力试验杆式应变天平。其他测力试验应变天平亦可参照使用。
信息:ICSCCS发布:2011-05-25 实施:2011-08-01

AS 60068.2.69-2004 环境试验.试验.Te试验:通过润湿天平法对表面安装技术用电子组件进行可焊性试验
简介:Part of a suite of Standards that adopt the IEC 60068 series of Standards as Australian Standards. The series contains fundamental information on environmental testing procedures and severities of tests, including information on atmospheric conditions fo
信息:ICS:19.040;29.020 CCS发布:2004-06-03 实施

DB32/T 4343-2022 固定污染源废气 颗粒物的测定 便携式振荡天平法
简介:
信息:ICS:13.040.40 CCS:Z10 发布:2022-09-06 实施:2022-10-06

ANSI/ASTM D7739-2011 通过石英晶体微量天平测量热氧化稳定性的操作规程
简介:This laboratory test method covers the quantitative determination of deposits produced from gas turbine fuels. Several different groups are conducting research using a quartz crystal microbalance. A standard practice is needed to standardize key aspects of the test so that results can be compared throughout industry.
信息:ICS:27.040;75.160.20 CCS:E31 发布:2011 实施

JJG 156-2004 架盘天平
简介:
信息:ICSCCS:A53 发布:2004-03-02 实施:2004-09-02

JJF 1940-2021 电磁天平校准规范
简介:
信息:ICSCCS:XXXX 发布:2021-12-08 实施:2022-06-08

ASTM D7739-2011 通过石英晶体微量天平测量热氧化稳定性的标准操作规程
简介:The tendency of a jet fuel to resist the formation of deposits at elevated temperature is indicative of its oxidative thermal stability. This practice provides a technique for the simultaneous determination of deposit formation and oxygen consumption during the thermal oxidation of jet fuels and other hydrocarbon liquids. The practice can be used to evaluate the thermal stability of fuels and to determine the efficacy of additives in inhibiting deposition or slowing oxidation, or both. A test temperature of 140x00B0;C and run length up to 16 h has been found to be effective for the relative evaluation of fuels and fuel additives. This practice has also been employed for other hydrocarbon liquids, such as gasoline and diesel fuels, but additional safety issues may need to be addressed by the user.1.1 This laboratory practice covers the quantitative determination of surface deposits produced during the thermal oxidation of gas turbine fuels by monitoring the oscillation frequency of a quartz crystal during thermal exposure. In this practice, x201C;thermal oxidative stabilityx201D; refers to the tendency of a fuel to resist surface deposit formation during heating. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 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.
信息:ICS:75.160.20 CCS:E31 发布:2011 实施

ISO 14694:2003 工业风扇——天平质量和振动水平规范
简介:
信息:ICS:21.120.40 CCS发布:2003-04-14 实施

T/CECA 48-2021 石英晶体微天平晶片
简介:本文件规定了石英晶体微天平晶片的术语和定义、材料、技术要求、测量程序,检验规则及标志、包装、运输、贮存。本文件适用于石英晶体微天平晶片。
信息:ICS:31.140 CCS:C398 发布:2021-03-04 实施:2021-08-06

ASTM D7739-2011(2016) 采用石英晶体微天平测量热氧化稳定性的标准实施规程
简介:3.1x00a0;The tendency of a jet fuel to resist the formation of deposits at elevated temperature is indicative of its oxidative thermal stability. This practice provides a technique for the simultaneous determination of deposit formation and oxygen consumption during the thermal oxidation of jet fuels and other hydrocarbon liquids. The practice can be used to evaluate the thermal stability of fuels and to determine the efficacy of additives in inhibiting deposition or slowing oxidation, or both. A test temperature of 1408201;x00b0;C and run length up to 168201;h has been found to be effective for the relative evaluation of fuels and fuel additives. This practice has also been employed for other hydrocarbon liquids, such as gasoline and diesel fuels, but additional safety issues may need to be addressed by the user. 1.1x00a0;This laboratory practice covers the quantitative determination of surface deposits produced during the thermal oxidation of gas turbine fuels by monitoring the oscillation frequency of a quartz crystal during thermal exposure. In this practice, x201c;thermal oxidative stabilityx201d; refers to the tendency of a fuel to resist surface deposit formation during heating. 1.2x00a0;The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3x00a0;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.
信息:ICS:75.160.20 CCS发布:2011 实施

ASTM D6831-02 使用堆叠式 惯性微量天平采样和确定堆积气体中的颗粒物的标准测试方法
简介:
信息:ICS:07.100.01 CCS发布:2002-10-10 实施

SJ/T 10943-2020 电真空器件用刚玉粉粒度分布的测定 密度天平法
简介:
信息:ICS:31.03 CCS:L 90 发布:2020-12-09 实施:2021-04-01

ASTM D6831-2011 利用惯性微量天平在烟囱内取样并测定烟气中颗粒物质的标准试验方法
简介:The measurement of particulate matter is widely performed to characterize emissions from stationary sources in terms of total emission rates to the atmosphere for regulatory purposes. This test method is particularly well suited for use in performance assessment and optimization of particulate matter control systems, continuous particulate matter emissions monitoring systems and the measurement of low concentration particulate matter laden gas streams in the range of 0.2 mg/m3 to 50 mg/m3.1.1 This test method describes the procedures for determining the mass concentration of particulate matter in gaseous streams using an automated, in-stack test method. This method, an in-situ, inertial microbalance, is based on inertial mass measurement using a hollow tube oscillator. This method is describes the design of the apparatus, operating procedure, and the quality control procedures required to obtain the levels of precision and accuracy stated.1.2 This method is suitable for collecting and measuring filterable particulate matter concentrations in the ranges 0.2 mg/m3 and above taken in effluent ducts and stacks.1.3 This test method may be used for calibration of automated monitoring systems (AMS). If the emission gas contains unstable, reactive, or semi-volatile substances, the measurement will depend on the filtration temperature, and this method (and other in-stack methods) may be more applicable than out-stack methods for the calibration of automated monitoring systems.1.4 This test method can be employed in sources having gas temperature up to 200C and having gas velocities from 3 to 27 m/s.1.5 This test method includes a description of equipment and methods to be used for obtaining and analyzing samples and a description of the procedure used for calculating the results.1.6 Stack temperatures limitation for this test method is approximately 200C (392F).1.7 This test method may be also be limited from use in sampling gas streams that contain fluoride, or other reactive species having the potential to react with or within the sample train.1.8 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.
信息:ICS:07.100.01 (Microbiology in general) CCS:Z15 发布:2011 实施

ASTM D4753-02 评估 选择和指定用于土壤 岩石和建筑材料测试的天平和标准质量标准指南
简介:
信息:ICS:17.060 CCS发布:2002-01-10 实施

ASTM D7739-11(2020) 通过石英晶体微量天平测定热氧化稳定性的标准实践
简介:
信息:ICS:75.160.20 CCS发布:2020-12-01 实施

ASTM B808-2010 水晶微量天平监测大气腐蚀室的标准试验方法
简介:Corrosion film growth with thicknesses varying from a monolayer of atoms up to 1 x03BC;m can readily be measured on a continuous, real-time, in-situ, basis with QCMs. The test results obtained for this test method are influenced by various factors, including geometrical effects, temperature, humidity, film thickness, film materials, electrode conditions, gases in the corrosion chamber, atmospheric pressure, and so forth. Calibration of coated crystals and instrumentation and reproducible crystal operating conditions are necessary for consistent results.1.1 This test method monitors the reactivity of a gaseous test environment in which metal surfaces (for example, electrical contacts, assembled printed wiring boards, and so forth) and other materials subject to pollutant gas attack undergo accelerated atmospheric corrosion testing. This test method is applicable to the growth of adherent corrosion films whose total corrosion film thickness ranges from a few atomic monolayers to approximately a micrometre. 1.2 The test method provides a dynamic, continuous, in-situ, procedure for monitoring the corrosion rate in corrosion chambers; the uniformity of corrosion chambers; and the corrosion rate on different surfaces. Response time in the order of seconds is possible. 1.3 With the proper samples, the quartz crystal microbalance (QCM) test method can also be used to monitor the weight loss from a surface as a result of the desorption of surface species (that is, reduction of an oxide in a reducing atmosphere). (Alternative names for QCM are quartz crystal oscillator, piezoelectric crystal oscillator, or thin-film evaporation monitor.) 1.4 This test method is not sufficient to specify the corrosion process that may be occurring in a chamber, since a variety of pollutant gases and environments may cause similar weight gains. 1.5 This test method is generally not applicable to test environments in which solid or liquid particles are deposited on the surface of the quartz crystal. 1.6 The values stated in SI units are to be regarded as standard. The values in parentheses are for information only. 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 become familiar with all hazards including those identified in the appropriate Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.
信息:ICS:77.060 CCS:H25 发布:2010 实施

ASTM D4753-2002 评定、选择和规范土壤、岩石及结构材料试验用天平和标准砝码的标准指南
简介:1.1 This guide provides minimum requirements for general-purpose scales, balances, and standard masses used in testing soil, rock, and related construction materials.1.2 This guide provides guidance for evaluating, selecting, and specifying general purpose scales, balances, and standard masses used in testing soil, rock, and related construction materials.1.3 The accuracy requirements for balances and scales are specified in terms of the combined effect of all sources of error contributing to overall balance performance. The measurement of specific sources of error and consideration of details pertaining to balance construction have been intentionally avoided.1.4 This guide does not include requirements for balances and scales having accuracies greater than those generally required in testing soil, rock, and related construction materials.1.5 This guide does not apply to nongraduated balances.1.6 This guide does not address the methods used to verify or quantify specific parameters dealing with balances and scales. For a description of tests used in evaluating balance performance, see NIST Handbook 44.1.7 This guide is not intended to be used as a specification for the purchase of balances and scales. Note 18212;The National Institute of Standards and Technology (NIST), formerly the National Bureau of Standards (NBS), and the International Organization of Legal Metrology (OIML) publish standards or practices that specify construction requirements as well as performance guides for balances. ASTM, OIML, and NIST publish construction standards and tolerances for standard masses. Note 28212;The terms "mass" and "determine the mass of" are used in this standard instead of the more commonly used terms "weight" and "weigh" to comply with standard metric practice. In addition, the term "standard mass(es)" is used instead of standard "standard weight(s)" when referring to a piece of material of known specified mass used to compare or measure the mass of other masses.1.8 This guide offers an organized collection of information or a series of options and does not recommend a specific course of action. This document cannot replace education or experience and should be used in conjunction with professional judgement. Not all aspects of this guide may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged nor should this document be applied without consideration of a project''s many unique aspects. The sword "Standard" in the title of this document mans only that the document has been approved through the ASTM consensus process.
信息:ICS:17.060 (Measurement of volume, mass, density, visc CCS:N13 发布:2002 实施

JJG 98-2019 机械天平
简介:
信息:ICSCCS发布:2019-09-27 实施:2020-03-27

ASTM B808-2010(2015) 用石英晶体微量天平监测室内大气腐蚀的标准试验方法
简介:4.1x00a0;Corrosion film growth with thicknesses varying from a monolayer of atoms up to 1 x03bc;m can readily be measured on a continuous, real-time, in-situ, basis with QCMs. 4.2x00a0;The test results obtained for this test method are influenced by various factors, including geometrical effects, temperature, humidity, film thickness, film materials, electrode conditions, gases in the corrosion chamber, atmospheric pressure, and so forth. Calibration of coated crystals and instrumentation and reproducible crystal operating conditions are necessary for consistent results. 1.1x00a0;This test method monitors the reactivity of a gaseous test environment in which metal surfaces (for example, electrical contacts, assembled printed wiring boards, and so forth) and other materials subject to pollutant gas attack undergo accelerated atmospheric corrosion testing. This test method is applicable to the growth of adherent corrosion films whose total corrosion film thickness ranges from a few atomic monolayers to approximately a micrometre. 1.2x00a0;The test method provides a dynamic, continuous, in-situ, procedure for monitoring the corrosion rate in corrosion chambers; the uniformity of corrosion chambers; and the corrosion rate on different surfaces. Response time in the order of seconds is possible. 1.3x00a0;With the proper samples, the quartz crystal microbalance (QCM) test method can also be used to monitor the weight loss from a surface as a result of the desorption of surface species (that is, reduction of an oxide in a reducing atmosphere). (Alternative names for QCM are quartz crystal oscillator, piezoelectric crystal oscillator, or thin-film evaporation monitor.) 1.4x00a0;This test method is not sufficient to specify the corrosion process that may be occurring in a chamber, since a variety of pollutant gases and environments may cause similar weight gains. 1.5x00a0;This test method is generally not applicable to test environments in which solid or liquid particles are deposited on the surface of the quartz crystal. 1.6x00a0;The values stated in SI units are to be regarded as standard. The values in parentheses are for information only. 1.7x00a0;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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.
信息:ICS:77.060 CCS发布:2010 实施

ASTM D6831-2002 利用惯性微量天平在烟囱内取样并测定烟气中颗粒物质的标准试验方法
简介:1.1 This test method describes the procedures for determining the mass concentration of particulate matter in gaseous streams using an automated, in-stack test method. This method, an in-situ, inertial microbalance, is based on inertial mass measurement using a hollow tube oscillator. This method is describes the design of the apparatus, operating procedure, and the quality control procedures required to obtain the levels of precision and accuracy stated.1.2 This method is suitable for collecting and measuring filterable particulate matter concentrations in the ranges 0.2 mg/m3 and above taken in effluent ducts and stacks.1.3 This test method may be used for calibration of automated monitoring systems (AMS). If the emission gas contains unstable, reactive, or semi-volatile substances, the measurement will depend on the filtration temperature, and this method (and other in-stack methods) may be more applicable than out-stack methods for the calibration of automated monitoring systems.1.4 This test method can be employed in sources having gas temperature up to 200176;C and having gas velocities from 3 to 27 m/s.1.5 This test method includes a description of equipment and methods to be used for obtaining and analyzing samples and a description of the procedure used for calculating the results.1.6 Stack temperatures limitation for this test method is approximately 200176;C (392176;F).1.7 This test method may be also be limited from use in sampling gas streams that contain fluoride, or other reactive species having the potential to react with or within the sample train.1.8 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.
信息:ICS:07.100.01 (Microbiology in general) CCS:Z15 发布:2002 实施

JJG 156-2016 架盘天平
简介:本规程适用于双盘、单杠杆、等臂式架盘天平(以下简称“天平”)的首次检定、后续检定及使用中检查。
信息:ICSCCS:A53 发布:2016-11-25 实施:2017-05-25

ASTM D4753-07 评估 选择和指定用于土壤 岩石和建筑材料测试的天平和标准质量标准指南
简介:
信息:ICS:17.060 CCS发布:2007-07-15 实施

ISO/TR 15855:2001 铜、铅和硫化锌精矿——静态天平测试的分步程序
简介:
信息:ICS:73.060.99 CCS发布:2001-08-09 实施

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