DL/T 2687-2023
Flexible inclinometer (English Version)

Standard No.

DL/T 2687-2023

Language

Chinese, Available in English version

Release Date

2023

Published By

Professional Standard - Energy and Power Planning  CN  /  NDGJ

Latest

DL/T 2687-2023

Introduction

Core interpretation of the flexible inclinometer standard

As the first technical standard in the power industry specifically for flexible inclinometers, DL/T ×××××-202× fills the gap in the standardization of flexible structure displacement monitoring. This standard innovatively incorporates multi-node linkage measurement technology into the specification system, and its technical index requirements are more than 30% higher than those of traditional inclinometers.

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Comparative analysis of key technical indicators

Parameter dimension	Traditional inclinometer	Requirements of this standard	Technological breakthrough
Measuring range	±30°	±50°	Extended applicability in complex terrain
Displacement resolution	0.1mm/m	0.05mm/m	Improved micro-deformation monitoring capability
Working temperature	-20~60℃	-30~70℃	Enhanced adaptability to extreme environments

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Key points for standard implementation

Installation specification example

According to Clause 9.1 of the standard, the installation of the flexible inclinometer must meet the following requirements:

• Base horizontality deviation ≤0.5°
• Connecting joint torsion angle ≤3°
• Cable bending radius ≥15 times the outer diameter

In a hydropower station project, the monitoring system installed according to this standard successfully warned of an initial dam displacement of 2.3mm.

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Technology Evolution Analysis

This standard writes the three-axis orthogonal sensitive element measurement technology into the normative document for the first time, and its displacement algorithm (Appendix A) integrates:

1. Gravitational field vector decomposition principle
2. Multi-node data coupling algorithm
3. Temperature compensation model

Compared with previous standards such as DL/T1134, it has achieved major breakthroughs in data continuity and system stability.

DL/T 2687-2023 history

• 2023 DL/T 2687-2023 Flexible inclinometer

Topics on standards and specifications

Standard and Specification