1.1 这些试验方法包括使用两种类型的气压计测量大气压力:福廷水银气压计和无液气压计。 1.2 在没有异常扰动的情况下，在距离该点100 m的水平距离和0.5 m的垂直距离内，通过这些试验方法在该点测量的大气压力在任何地方都有效。 1.3 大气压力随高度增加而降低，并随水平距离变化1 Pa/100 m或更小，除非发生灾难性现象（例如龙卷风）。因此，将已知大气压力扩展到另一个现场，超出了 1.2 如果满足以下标准，可以通过校正高度差来实现: 1.3.1 新场地横向2000米，纵向500米。 1.3.2 前10分钟内的压力变化小于20 Pa。 压力， P 2. 位置2是已知压力的函数 P 1. 在站点1，海拔高度的代数差， h 1. − h 2. ，和之间空间中的平均绝对温度。之间的函数关系 P 1. 和 P 2. 如所示 10.2 . 两者之间的区别 P 1. 和 P 2. 对于以下各项之间每1 m的差异: h 1. 和 h 2. 在中给出 表1 和10.4 P 1. 和平均温度。 1.4 大气压力随时间变化。这些测试方法仅提供瞬时值。 1. 5. 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.6 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 第节给出了具体的安全预防说明 7. . ====意义和用途====== 5.1 大气压力是气象学家用来描述大气状态的基本变量之一。 5.2 当在涉及压力相关变量的某些科学和工程应用中必须考虑与“标准”压力条件的差异时，需要测量大气压力。 5.3 这些试验方法提供了一种测量大气压力的方法，其精度和精度与政府气象机构进行的测量的精度和精度相当。

1.1 These test methods cover the measurement of atmospheric pressure with two types of barometers: the Fortin-type mercurial barometer and the aneroid barometer. 1.2 In the absence of abnormal perturbations, atmospheric pressure measured by these test methods at a point is valid everywhere within a horizontal distance of 100 m and a vertical distance of 0.5 m of the point. 1.3 Atmospheric pressure decreases with increasing height and varies with horizontal distance by 1 Pa/100 m or less except in the event of catastrophic phenomena (for example, tornadoes). Therefore, extension of a known barometric pressure to another site beyond the spatial limits stated in 1.2 can be accomplished by correction for height difference if the following criteria are met: 1.3.1 The new site is within 2000 m laterally and 500 m vertically. 1.3.2 The change of pressure during the previous 10 min has been less than 20 Pa. The pressure, P 2 at Site 2 is a function of the known pressure P 1 at Site 1, the algebraic difference in height above sea level, h 1 − h 2 , and the average absolute temperature in the space between. The functional relationship between P 1 and P 2 is shown in 10.2 . The difference between P 1 and P 2 for each 1 m of difference between h 1 and h 2 is given in Table 1 and 10.4 for selected values of P 1 and average temperature. 1.4 Atmospheric pressure varies with time. These test methods provide instantaneous values only. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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. Specific safety precautionary statements are given in Section 7 . ====== Significance And Use ====== 5.1 Atmospheric pressure is one of the basic variables used by meteorologists to describe the state of the atmosphere. 5.2 The measurement of atmospheric pressure is needed when differences from “standard” pressure conditions must be accounted for in some scientific and engineering applications involving pressure dependent variables. 5.3 These test methods provide a means of measuring atmospheric pressure with the accuracy and precision comparable to the accuracy and precision of measurements made by governmental meteorological agencies.