DYE-300S is a constant Compressive/Flexural tester, which is a product of the ordinary pressure tester. It adopts computer digital control and effectively
avoids the influence of manual operation. It can be used for the compressive strength test of mortar and flexural compressive strength test of cement mortar,
as well as the compressive performance test of brick, stone, cement, concrete and other materials. Double station test space, computer operation, computer
storage, computer printing, etc. The utility model has the advantages of one machine dual-use, space saving and simple operation.
The loading speed is adjustable from 0.3 to 10kN. Input different speeds to automatically calculate test results according to standards. The standard speed
is 2.4kn/s or 5.0kn/s. It has the functions of microcomputer display, calculation and storage and printing data report. Greatly reducing the failure rate.
Imported proportional valve is adopted, with high stability and stable loading speed. There is no manual oil supply valve and oil return valve. It is a true full-
automatic constant stress press. Winddows version of the operating software is easy to use and can be learned in ten minutes. The software is upgraded for
free, and the new version of a can be downloaded from the Internet at any time.
Technical parameters:
★ compressive a-large test force 300KN, flexural a-large test force 10kN
★ measurement range of test force kn 12 ~ 300 (4% - AFS)
★ relative error of test force indication ≤ 1% of indication
★ test force resolution: 0.1kn
★ loading rate: 0.3kn/s ~ 10kn/s (compression resistance) 50N / S (bending resistance)
★ loading speed error: ± 5%
★ rated flow of oil pump: 1.52l/min
★ rated pressure of hydraulic pump: 25MPa
★ bearing plate size φ 155mm (compression resistance) 80x150mm (bending resistance)
★ piston diameter φ 125mm (compressive) Φ 60mm (bending resistance)
★ piston stroke: 80mm
★ motor power: three phase 0.75 kw
★ overall dimension (mm): 820 × four hundred and fifty × 1300mm
★ weight: 500kg
Working principle:
★ hydraulic system
The hydraulic oil in the oil tank drives the high-pressure pump to enter the oil circuit through the motor, flows through the check valve, high-pressure oil filter,
differential pressure valve group and servo valve, and enters the oil cylinder. The computer sends a control signal to the servo valve to control the opening
and direction of the servo valve, so as to control the flow into the oil cylinder and realize the control of the constant speed test force.
★ control system
The system includes digital servo valve, high-precision sensor, controller and software, with high control accuracy and reliability. Meet the test requirements
of GB, ISO, ASTM and other standards for cement, mortar, concrete and other materials.
The system has the following functions:
★ with force closed-loop control function;
★ it can realize loading at the same load rate or loading at the same stress rate;
★ microcomputer is used to realize electronic measurement and complete the test automatically;
★ the computer automatically calculates the results and prints the report.
★ safety protection device
When the test force exceeds 3% of a large test force, overload protection will be provided and the oil pump motor will stop.
