请问图中液位计LG-M中的M是啥意思? ansi/isa–s5.1:table 1 — identification letters 9) the passive function g applies to instruments or devices that provide an uncalibrated view, such as sight glasses and television monitors. 无源功能g应用与提供无刻度观察的仪表或设备,如直视的玻璃管液位计或者电视监控器, 所以说 根本不能用pg表是现场压力表,用pg是不规范的 查看更多