HJ 212-2025: Technical requirements for data transmission of pollutant automatic monitoring and surveillance systems

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Scope

This standard specifies the system architecture of the pollutant automatic monitoring
and control system, the protocol hierarchy between field computers and the host
computer, the communication protocol between field computers and the host computer,
the communication method between automatic monitoring field instruments and data
loggers, the technical requirements for data acquisition, processing, uploading.
This standard applies to data transmission between automatic monitoring equipment
and monitoring equipment, as well as data acquisition and processing by automatic
monitoring equipment.

Basic Data

Standard ID	HJ 212-2025 (HJ212-2025)
Description (Translated English)	Technical requirements for data transmission of pollutant automatic monitoring and surveillance systems
Sector / Industry	Environmental Protection Industry Standard
Classification of Chinese Standard	Z00
Word Count Estimation	92,611
Date of Issue	2026-06-06
Date of Implementation	2026-01-01
Older Standard (superseded by this standard)	HJ 212-2017
Issuing agency(ies)	Ministry of Ecology and Environment
Summary	This standard specifies the system architecture of an automatic pollutant monitoring and control system, the protocol hierarchy between field devices and the host computer, the communication protocol between field devices and the host computer, the communication method between automatic monitoring field instruments and data acquisition equipment, and the technical requirements for data acquisition, processing, and uploading. This standard applies to data transmission between automatic monitoring equipment and monitoring equipment, as well as data acquisition and processing by automatic monitoring equipment.