WAW-D Series Hydraulic Universal Testing Machine WAW-D series microcomputer controlled electro-hydraulic universal testing machine adopts imported high accuracy electro-hydraulic servo valve and precision hydraulic cylinder; the measurement and control system adopts the microcomputer controlled electro-hydraulic servo measurement and control system which is independently researched and developed by the company; the measurement and control system can automatically control the testing process and automatically process the testing data. The microcomputer screen can display the test force, deformation and various test curves, capable of printing various test reports and users can also edit the format of the test reports for themselves.  Working cylinder-piston adopts gap seal, with small frictional force;  The oil pump has low noise, stable performance and long service life;  Independent hydraulic chuck oil source and the chucking force can be adjusted;  Proportional servo valve with quick action response and the demand for the oil quality is low;  The performance of the sensor is stable with high accuracy;  The resolving capability is high without grading in the whole measurement range;  Having the functions of automatic zero setting, automatic calibration, automatic diagnosis and automatic storage, etc.  The automatic control of constant test force, constant deformation, constant displacement, even rate of stressing and even rate of strain is realized and impact free switch-over is realized in the test;  Having protection functions for over current, over speed, over-test force and over stroke, etc.

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