A53 力学计量 标准查询与下载

JJG 907-2003 动态汽车衡(车辆总重计量)

Automatic Instruments for Weighing Road Vehicles in Motion (Total Vehicle Weighing)

JJG 244-2003 感应分压器

Inductive Voltage Divider

ISO 14686:2003 液体比重测定.水井的抽水试验.设计、性能和使用的考虑和指南

This International Standard describes the factors to be considered and the measurements to be made when designing and performing a pumping test, in addition to a set of guidelines for field practice to take account of the diversity of objectives, aquifers, groundwater conditions, available technology and legal contexts. The standard specifies the fundamental components required of any pumping test. It also indicates how they may be varied to take account of particular local conditions. It deals with the usual types of pumping test carried out for water-supply purposes, in which water is abstracted from the entire screened, perforated or unlined interval(s) of a well. Interpretation of the data collected during a pumping test is referred to in this International Standard only in a general way. For full details of the analysis and interpretation of test data, reference should be made to specialized texts. Examples of such texts are included in a selected bibliography.

Hydrometric determinations - Pumping tests for water wells - Considerations and guidelines for design, performance and use

JJG 573-2003 膜盒压力表

Capsule Pressure Gauges

JJG 669-2003 称重传感器

Load Cell

ASTM E1782-03 用热分析法测定蒸气压力的标准试验方法

Vapor pressure is a fundamental thermophysical property of a liquid. Vapor pressure data are useful in process design and control, in establishing environmental regulations for safe handling and transport, for estimation of volatile organic content (VOC), and in deriving hazard assessments. Vapor pressure and boiling temperature data are required for Material Safety Data Sheets (MSDS). The enthalpy of vaporization may also be estimated from the slope of the vapor pressure curve (See Practice E 2071). 1.1 This test method describes a procedure for the determination of the vapor pressure of pure liquids or melts from boiling point measurements made using differential thermal analysis (DTA) or differential scanning calorimetry (DSC) instrumentation operated at different applied pressures.1.2 This test method may be used for the temperature range 273 to 773 K (0 to 500 176;C) and for pressures between 5 kPa to 2 MPa. These ranges may differ depending upon the instrumentation used and the thermal stability of materials tested. Because a range of applied pressures is required by this test method, the analyst is best served by use of instrumentation referred to as high pressure differential thermal instrumentation (HPDSC or HPDTA). 1.3 Computer or electronic-based instruments, techniques, or data treatment equivalent to this test method may also be used. Note 18212;Users of this test method are expressly advised that all such instruments or techniques may not be equivalent. It is the responsibility of the user of this test method to determine the necessary equivalency prior to use. Only the manual procedures are to be considered valid. 1.4 SI value units are the standard. The customary units given in parentheses are for information only. 1.5 There is no ISO standard equivalent to this test method.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 establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Determining Vapor Pressure by Thermal Analysis

JJG 781-2002 数字指示轨道衡检定规程

Verification Regulation of Digital Indicating Rail-weighbridges

ASTM G98-02 材料耐磨损性的标准试验方法

This test method is designed to rank material couples in their resistance to the failure mode caused by galling and not merely to classify the surface appearance of sliding surfaces. This test method should be considered when damaged (galled) surfaces render components non-serviceable. Experience has shown that galling is most prevalent in sliding systems that are slow moving and operate intermittently. The galling and seizure of threaded components is a classic example which this test method most closely simulates. Other galling-prone examples include: sealing surfaces of value trim which may leak excessively due to galling; and pump wear rings that may function ineffectively due to galling. If the equipment continues to operate satisfactorily and loses dimension gradually, then mechanical wear should be evaluated by a different test such as the crossed cylinder Test Method (see Test Method G 83). Chain belt pins and bushings are examples of this type of problem. This test method should not be used for quantitative or final design purposes since many environmental factors influence the galling performance of materials in service. Lubrication, alignment, stiffness and geometry are only some of the factors that can affect how materials perform. This test method has proven valuable in screening materials for prototypical testing that more closely simulates actual service conditions.1.1 This test method covers a laboratory test which ranks the galling resistance of material couples. Most galling studies have been conducted on bare metals and alloys; however, non-metallics, coatings, and surface modified alloys may also be evaluated by this test method.1.2 This test method is not designed for evaluating the galling resistance of material couples sliding under lubricated conditions because galling usually will not occur under lubricated sliding conditions using this test method.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.

Standard Test Method for Galling Resistance of Materials

JJG 195-2002 连续累计自动衡器检定规程

Verification Regulation of Continuous Totalizing Automatic Weighing Instruments

JJG 564-2002 重力式自动装料衡器检定规程

Verification Regulation of Automatic Gravimetric Filling Instruments

JJG 973-2002 冲击测量仪检定规程

Verification Regulation of Measuring Instruments for Shock

DLA A-A-52021 A-2001 平衡指示秤;称量灵敏度至1克

This commercial item description (CID) establishes the government acquisition requirements for beam indicating weighing scales to be used as accurate weighing instruments.A-A-52021 specifies the requirements for a single type of scale therefore no classification as to type or style will be noted in this CID.

SCALE, BEAM INDICATING; WEIGHING SENSITIVE TO 1 GRAM

DLA A-A-50685 VALID NOTICE 2-2001 单面精度标准水平仪

A-A-50685, dated 9 June 1995, has been reviewed and determined to be valid for use in acquistion.

LEVEL, PRECISION MASTER, SINGLE FACE

DLA A-A-50223 A-2001 称比重的指示秤:容量0.01不小于200克,3或4秤杆:0.01克的灵敏度

This commercial item description (CID) establishes the government acquisition requirements for specific gravity weighing beam indicating scales to be used as accurate weighing instruments.

SCALE, BEAM INDICATING: WEIGHING, SPECIFIC GRAVITY; CAPACITY 0.01 NOT LESS THAN 200 GRAMS, THREE OR FOUR WEIGHT BEAMS: 0.01 GRAM SENSITIVITY

JJG 42-2001 工作玻璃浮计检定规程

Verification Regulation of Working Glass Hydrometers

IEEE 836-2001 线性加速度测量仪精密离心试验推荐规程

Describes the conduct and analysis of precision tests that are to be performed on linear accelerometers using centrifuge techniques

Recommended practice for precision centrifuge testing of linear accelerometers

JJG 734-2001 力标准机检定规程

Verification Regulation of Force Standard Machines

QB/T 2501-2000 重力式自动装料衡器

本标准规定了重力式自动装料衡器(定量自动衡器()以下简称“装料衡器”)的定义、分类、要求、试验方法、检验规则和标志、包装、运枯、贮存。 本标准适用于通过自动称量，把散状物料分成许多质鱼预先规定的、实际上是恒定的、相互分离的载荷的装料衡器。 注 1 本标准没有限制装料衡器的最大秤f或最小秤最。 2 装料衡器作为非自动衡器使用时，应满足OIML国际建议R76号《非自动衡器》的要求。

Gravity Automatic Loading Scale

AGA B109.3-2000 旋转式气体流量计

Rotary-Type Gas Displacement Meters

Rotary-Type Gas Displacement Meters XQ0010

AGA B109.2-2000 膜式气体流量计(容量大于或等于500立方英尺/每小时)第4版

Diaphragm Type Gas Displacement Meters (500 Cubic Feet per Hour Capacity and over) Fourth Edition

Diaphragm Type Gas Displacement Meters (500 Cubic Feet per Hour Capacity and over) Fourth Edition; XQ0009