标准摘要
[中文适用范围]： ISO 17123 的这一部分规定了在建筑和测量测量中使用时确定和评估水平仪（水平仪、补偿器水平仪、数字水平仪）及其辅助设备的精度时要采用的现场程序。 这些测试主要是为了现场验证特定仪器对于当前任务的适用性，并满足其他标准的要求。 它们并不建议作为本质上更全面的验收测试或性能评估。 该国际标准可以被认为是评估测量（更具体地说是被测量）不确定度过程的第一步。 测量结果的不确定度取决于许多因素。 其中包括：重复性、再现性（日间重复性）以及对所有可能的误差源的全面评估，如 ISO 测量不确定度表达指南 (GUM) 所规定。 这些现场程序是专门为现场应用而开发的，无需特殊的辅助设备，并且经过专门设计，可最大限度地减少大气影响。 [外文原描述]： This part of ISO 17123 specifies field procedures to be adopted when determining and evaluating the precision of levels (spirit levels, compensator levels, digital levels) and their ancillary equipment when used in building and surveying measurements. Primarily, these tests are intended to be field verifications of the suitability of a particular instrument for the immediate task at hand and to satisfy the requirements of other standards. They are not proposed as tests for acceptance or performance evaluations that are more comprehensive in nature. This International Standard can be thought of as one of the first steps in the process of evaluating the uncertainty of a measurement (more specifically a measurand). The uncertainty of a result of a measurement is dependent on a number of factors. These include among others: repeatability, reproducibility (between day repeatability) and a thorough assessment of all possible error sources, as prescribed by the ISO Guide to the expression of uncertainty in measurement (GUM). These field procedures have been developed specifically for in situ applications without the need for special ancillary equipment and are purposely designed to minimize atmospheric influences.
英文名称Optics and optical instruments — Field procedures for testing geodetic and surveying instruments — Part 2: Levels