DB/T 87-2021 in English

VALID

The rules of model coding and nomenclature for earthquake observation instrument

Issued on:2021-11-11
Implemented on:2022-04-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $150.00
$146.00

Standard No:	DB/T 87-2021
Document status:	VALID
Title in English:	The rules of model coding and nomenclature for earthquake observation instrument
Title in Chinese:	地震观测仪器型号编码及名称命名规则
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2021-11-11
Implemented on:	2022-04-01
ICS Classification:	91.120.25-Seismic and vibration protection
Chinese Classification:	P15-Engineering seismic resistance
Professional Classification:	DB-Provincial Standard
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本文件规定了地震观测仪器的仪器型号编码及仪器名称命名的原则和方法。
本文件适用于地震观测仪器的列装和管理。

Introduction

Standard Background and Evolution

As a supporting technical specification for DB/T26-2008 "Classification and Codes of Seismic Observation Instruments", this standard systematically constructs the model coding system of seismic observation instruments for the first time. Compared with the 2008 classification standard, the coding rules for modified instruments are newly added, which strengthens the traceability of the instrument throughout its life cycle.

Analysis of core terms

Terms	Definition	Application cases
Instrument base model	Benchmark model determined by mass production	Such as the initial version of FHD-1 proton magnetometer
Instrument modification	Local adjustments but no changes to the main technical indicators	FHD-1A is the first improved version of the base model

In-depth analysis of the coding structure

4-level marker segment structure

Take ZVSJCA0-AB/FFS# as an example:

ZVS: Velocity-type short-period observation (category)
J: Downhole deployment (group)
C: Sensor component (column)
A0: A series base type (type)

Observation category code table summary

Observation category	Typical code	Coverage items
Ground motion	ZVS/ZVB	Velocity-type short-period/wide-band observation
Crust deformation	XQC/XQS	Vertical/horizontal pendulum tilt observation
Electromagnetic	DMA/DMR	Absolute/relative geomagnetic observation

Key points for the implementation of naming rules

Principle of three elements in naming

Field identification: such as installation location such as "underground" and "surface"
Technical characteristics: principle description such as "short period" and "proton precession"
Performance identification: characteristic description such as "wideband" and "high precision"

Typical naming comparison

Code Example	Standard Naming	Number of Words
LSWJCH3	Downhole Pressure Water Level Meter	8 Words
DMABSP2	Surface Proton Magnetometer	7 Words

Standard Implementation Suggestions

Transition Plan between Old and New Standards

Establish a basic instrument database and uniformly assign type codes
Remodeled products must be registered with the Earthquake Monitoring and Forecasting Standardization Committee
Starting from 2024, newly purchased instruments must use this standard coding

Troubleshooting of Common Problems

Scenario	Handling method
Compound observation instrument	Use HLZ category code + main functional component classification
Manufacturer code conflict	Apply to the Standardization Committee for filing and coordination