The Steel Strand Extensometer is a high-precision strain measurement instrument specially designed for deformation testing of steel strands and prestressing wire specimens. Manufactured with strict quality control and in compliance with international testing standards, it ensures accurate and stable measurement of specimen elongation within the gauge length during tensile testing.

Steel Strand Extensometer

Model:TDGJ-YS1

I.Product Overview

The Steel Strand Extensometer can be used together with measuring amplifiers, strain indicators, and other secondary instruments to form a complete deformation measurement system. The collected signals can be transmitted to computers or data recorders for processing, analysis, and generation of stress-strain curves. It is an essential and recommended instrument in modern mechanical and material testing laboratories.

II. Key Features

1. High-precision strain measurement for steel strand and wire specimens

2. Suitable for various specimen sizes and gauge length deformation testing

3. Compatible with strain amplifiers, indicators, and data acquisition systems

4. Real-time signal output for computer-based data processing

5. Stable performance with excellent repeatability and reliability

6. Easy installation and user-friendly operation

III.Technical Specifications

Sensor Type: Resistance strain gauge

Bridge Resistance: 350 Ω full bridge

Output Sensitivity: ≥ 1.5 mV/V

Non-linearity: ≤ ±0.5% FS

Bridge Excitation Voltage: 3 – 12 V

Accuracy: Class 0.5

Output Signal: Analog voltage signal

Application: Tensile deformation measurement of steel strand and wire materials

IV. Application Range

Prestressing steel strand testing

Wire and cable tensile testing

Building material laboratories

Quality inspection institutions

Universities and research institutes

Mechanical and material testing centers

V. Working Principle

The extensometer measures deformation by attaching strain gauges to the specimen surface. When the specimen is stretched, the strain gauges detect micro-deformation and convert it into an electrical signal. The signal is then amplified and transmitted to a data acquisition system, where it is processed into stress-strain curves for analysis.

VI. System Compatibility

The Steel Strand Extensometer can be integrated with:

Universal Testing Machines (UTM)

Strain measurement amplifiers

Data acquisition systems

Computerized testing software

Mechanical testing platforms