YAW Series Computer Control Electro-hydraulic Compression Testing Machine

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Main functions
This series are used for compressive strength test of building materials, such as the specimen and component of cement, concrete and so on. Equipped with special auxiliaries, it can be used for bending resistant test of building materials and compression resistant test of red bricks. We can evaluate result parameters stated in related standards. They are perfect testing instrument for building project detection department, quality testing section, universities and colleges, research institution and industrial and mining enterprise.
Product features
Host machine is with double column type, which make the conformation compact and arrangement reasonable.
Adopt precise electro-hydraulic servo proportional valve. The speed is fast and the controlling accuracy is high.
Mechanic limit pistons protection assures the safety of testing.
Setup overload  protection which acn stop automatically,when
the load exceeds the maximum by 2-5%.
Controlling system
This machine is with digital and multi-channel loop of measuring and controlling system. It adopts force closed loop control technique and has the function of constant stress loading and load keeping. Loading speed can be arbitrarily set and the testing curves can be real time displayed.
Characteristics of software

The software integrate bending resistant test and compression resistant test procedure , such as bricks, cement, concrete and mortar.
The software divide testing procedure as follows: tile compression resistant executive program(GB13544—2000), cement compression resistant testing program (GB17671—1999), concrete specimen testing program(GB/T5001—2002)and mortar testing program(GB170—90).      
There is no subsection in all process. (Or classify according to the requirements of customers.)
Complete test in batch automatically and adjust breaking of specimen.
Windows Style can be controlled by human or computer.It is easy to manage and control,collect and calculate.
Record and save testing datas automatically.

Main Technical Specifications






Measuring range of






Accuracy of testing force


Subsection of force


Accuracy of constant



Loading speed(kn/s


Accuracy of

loading speed


Upper platen size  (mm)





Lower platen size  (mm)





Distance between two

platens (mm)





Maximum piston

stroke (mm)





Power supply


Working environment

10~30℃, relative humidity≤80%

Shape of machine

Double column

Large space, Double column

Overall dimension(mm

Host machine













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Q:How do you see a vacuum gauge?
The pressure on him is 0. 1 stands for 1MP
Q:The difference between pressure transmitter and remote pressure gauge
The remote pressure gauge is suitable for measuring the pressure of liquid, steam and gas which can not corrode the steel and copper alloy.The instrument is provided with a slide line resistance transmitter, the measured value to the value of electricity to two meters away from the measuring point, to realize centralized monitoring and remote control, the instrument can also indicate the pressure, in order to facilitate the on-site process inspection.The meter consists of a spring tube, a pressure gauge, a slide wire, a resistance transmitter, etc..The function principle of the mechanical part of the remote pressure gauge is the same as that of the common spring tube pressure gauge.Because the resistance transmitter is arranged on the gear drive, so when the fan gear shaft gear transmission mechanism of deflection, rotating arm resistance transmitter (brush) corresponding to the deflection due to sliding on the resistor, brush, change make the changes in the measured value of pressure change as the resistance value, and to the two instrument, indicating a corresponding reading value. At the same time, the primary instrument also indicates the corresponding pressure value.Two kinds of pressure transmitter pressure of the measured medium into high and low pressure chamber two, role in the delta element (i.e. sensitive element) on both sides of the diaphragm, by filling liquid on both sides is transmitted to the measuring diaphragm and the element in isolation. Measure the electrodes on the diaphragm and the insulation plate on both sides to form a 4-20mA standard signal output by the capacitor and send it to the program control system.
Q:Why is the manifold pressure gauge called the manifold pressure gauge, not the air conditioning pressure gauge group?
Manifold pressure gauge, "with the meaning of manifold"Why not air conditioning pressure gauge group, is the habit, the public, there is no reason.
Q:What's the difference between a pressure gauge and a negative pressure meter?
According to the type of pressure to be divided into negative pressure table, differential pressure gauge, positive pressure gauge, so the negative pressure gauge is only one kind of pressure gauge.Negative pressure meter measurement is relative to the local atmospheric pressure for negative pressure, negative pressure table, also known as vacuum pressure gauge, but conceptually there are some subtle differences, not here.If there is no special explanation, we generally say the pressure gauge defaults to the positive pressure meter.
Q:How is the pressure gauge ABC divided?
Instrument certification according to the location of the importance of varying degrees, generally divided into a, B, C three grades.A class is generally used in pressure control strict locations, requiring accurate instructions, is the focus of monitoring instruments, usually for an annual or semiannual inspection;Class B is generally used at locations where pressure control is more stringent and requires more accurate instructions. It is a general monitoring instrument, usually tested annually or two years;Class C is generally used in places where the pressure control is not strict and can be used as a reference value. It is a non monitoring instrument, usually tested for many years or replaced after failure;
Q:What does "MPa" on the pressure gauge mean?
The MPa (Zhao Pa) on the pressure gauge is the unit of pressure,0.1 MPa =1 kg / cm2.
Q:Cutting acetylene bottles on how there are 2 pressure gauges, which is an adjustable, adjustable number, and oxygen. Thank you!
Close to the bottle is a high pressure meter, which means that the bottle is pressure, and the other is a low pressure meter, indicating that the work pressure, the general use of the work pressure between 0.05 to 0.1, enough to use. Depending on the thickness of the plate to be determined. The use of oxygen meter is the same
Q:Static pressure pipe pile construction, pile machine pressure meter reading how to convert to KN
Static pressure pipe pile construction, the pile machine pressure meter reflects the horizontal bar pressure value (MPa), and the relationship between its pressure and pressure (KN) is related to the parameters of each cylinder.Hydraulic press pile machine press force and pressure meter reading conversion type is as follows:F=2PS+GType: F--------- press in force;P--------- pressure meter reading;S--------- press down the piston area of the cylinder;G--------- chucks, cylinders, plungers, and three weights of the pile driver
Q:What's the notation for a pressure gauge?
Y pressure gaugeZ vacuumW temperatureN shockP diaphragmS bimetalXC magnetic contactXC magnetic induction contactXG induction electric contactTZ resistor remote transmissionTT differential transmissionE film boxA ammoniaXD photoelectric contactSG inductance transmitterSS bimetallic single indicationT specialM diaphragmO oxygen useB stainless steelL thread typeF flange typeZ shockF corrosion resistanceFZ corrosion proofD positioningL needleSST pressure transmitterPD pressure relayCYS differential pressure gauge
Q:What is the state of the warranty period for the ordinary pressure gauge?
The pressure gauges are calibrated once every 6 months,Wuxi Hui Hua Instrument Technology Department

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