This part of GB/T 26944 specifies the product classification, technical requirements, test methods, inspection rules, signs, packaging, transportation and storage of tunnel visibility detectors. This part applies to the environmental testing equipment used in road and urban road tunnels, other tunnel environmental testing equipment can be used as a reference.
GB/T 26944.3-2011 Referenced Document
GB/T 26944.1-2011 Tunnel environment detection equipment.Part 1: General rule