GB/T 12452-2008
Replaced
T/CMA-RQ 120-2023
Active
Group standards
T/CMA-RQ 120-2023 Optical interface and communication protocol for gas meter detection
T/CMA-RQ 120-2023 Optical interface and communication protocol for gas meter detection
Basic Information
Standard Code:
T/CMA-RQ 120-2023
Standard Type:
Group standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Flow and level measurement instruments
ICS Name:
The comprehensive measurement of fluid flow
Publish Date:
2023-10-30
Implement Date:
2024-01-01
Pages:
28 pages
Scope
This document specifies the technical requirements, character transmission, data communication protocols, and other agreements for the optical interface and communication protocols used in the detection of gas meters.
This document is applicable to the automated detection of gas meters through an optical interface and specified communication protocols.
Development Information
Referenced Standards
GB/T 1988-1998 Information technology—7-bit Coded character set for information interchange
GB/T 14397-1993 Information processing—Start-stop transmission signal quality at DTE/DCE interfaces
GB/T 14397-2008 Information technology—Telecommunication and information exchange between systems—Start-stop transmission signal quality at DTE/DCE interfaces
GB/T 28036-2011 Information processing—Character structure for start/stop and synchronous character oriented transmission
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GB/T 29820.1-2013
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GB/T 29820.1-2013 Assessment of uncertainty in calibration and use of flow measurement devices—Part 1:Linear calibration relationships
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DB4401/T 70-2020
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