I. Overview

YUC.YJZDK₀Type 2-1 Intelligent Equal Strain Control₀Measuring the static side pressure coefficient K₀values to calculate the stationary earth pressure of the building foundation, the so-called stationary side pressure coefficient K₀Value refers to the effective lateral pressure σ of the unit soil under the condition of no lateral deformation₃and effective vertical pressure σ₁At the same time, according to K₀The value can be converted to the Poisson's ratio μ value of soil, that is ,μ= K₀/1K +₀ , the instrument can realize automatic detection and record K in real time₀A new type of special test instrument for geotechnical engineering.

II. Performance characteristics:

• Built-in battery, real-time clock function
• General network data transfer interface, data visualization
• Automatic computer control acquisition and processing
• Software has data upload function
• Double or single test
• The stress and strain loading modes can be realized
• Adopt high precision step motor loading control, stepless speed regulation, realize test slow loading, fast reset
• high-speed network communication interface and computer communication; data real-time storage in the collector
• The test process is controlled by computer, without manual reading, reducing human error and improving test accuracy
• Offline operation, instrument built-in data storage system, to be tested from the instrument to upload data to the computer storage and processing
• Fully integrated control system, equipped with 480*270 HD LCD touch screen, real-time display of displacement, pressure and other test parameters, matching touch key control operation, touch keyboard control or software control
• Software support win8/10 operating system, automatic acquisition and control, with equipment control module, data acquisition and processing module, sensor calibration module
• The main part of the instrument is made of aluminum alloy and stainless steel or other new anti-rust and anti-corrosion materials
   
  III. Main technical parameters of the instrument:

• Sample size :61.8mm in diameter and 40mm in height
• Axial stress: measuring range 0-1000 KPA, accuracy 0.3%, resolution 0.1 KPA, maximum axial force 10 KN
• Lateral stress: measuring range 0-1000 KPA, accuracy 0.3%, resolution 0.1 KPA
• Axial deformation :0-20mm, accuracy 0.3%, resolution 0.1mm
• Sample axial equistrain control: strain velocity 0-4mm/min