B 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 speedkn/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


Shape of machine

Double column

Large space, Double column

Overall dimensionmm

Host machine













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Q:The water pump's pressure gauge has 3 hands. What are they respectively?
[1] the pump pressure gauge has 3 hands, the pressure gauge should be electric contact pressure gauge. A needle is indicative of the pressure gauge pressure and electric contact point is a public, upper limit of electrical contacts, for the limit of the alarm or control, one is the lower limit of contact for alarm or control.[2]: water pump is the motive of the mechanical energy to become liquid to the machine and liquid energy, is a device used to move liquids, gases or special fluid medium, the pumps in use can be classified into the pump, circulating pump, fire pump, pressure test pump, sewage pump; according to the industry classification can be divided into oil pump, pump, chemical pump, metallurgy, mining and other fishing pump pump; according to the principle of classification can be divided into reciprocating pump, plunger pump, piston pump, diaphragm pump, rotor pump; according to the classification of medium can be divided into water pump, sewage pump, water pump, water pump, oil pump etc.. Water pumps are widely used in shipbuilding, oil production, heavy load machines and so on. Under the permission of the geographical environment, the water pump shall be as close as possible to the water source to reduce the length of the suction pipe.
Q:The pressure gauge is red, yellow and green to indicate the pressure. When the needle points to the green area, what does it mean?
It means normal pressure, yellow means high pressure, red means low pressure and can't be used.
Q:What kind of pressure gauges do you need for repairing refrigerators?
At least two, one is low voltage with negative pressure, the other is without negative pressure measurement of high pressure, one end of the refrigerant bottle or not connected, and the other end of the expansion bell mouth of the copper pipe reception test pipeline. When you go to the accessories store, the boss will tell you.
Q:What's the function of the oil pressure gauge? Where does it fit?
For the vibration of the pump outlet, where the pressure meter for proof
Q:What are the differences between axial pressure gauges and radial pressure gauges?
Axial pressure gauge, that is, pressure gauges, threaded joints and dial vertical.In the control and measurement process, due to the mechanical axial pressure gauge elastic sensitive element has the characteristics of high mechanical strength and convenient production, which has been more and more widely used mechanical axial pressure gauge.Radial pressure gauge, that is, pressure gauge, thread joint on the back of the pressure gauge.The radial pressure gauge is very easy to install, particularly suitable for installation in the valve, widely used in all kinds of water system, chemical industry, petroleum industry, shell: stainless steel, surface: glass, pressure gauge: tube spring element.
Q:Pointer form of pressure gauge, with digital pressure meter, advantages and disadvantages?
1 pointers are generally cheap, digital display is generally expensive.2 pointer is simple, more convenient operation, digital display is a little troublesome.3 pointer is not accurate digital display, sensitivity will certainly be different.4 pointer, I do not know whether you can bring DC4-20MA or RS485, it should be no, digital display can bring these functions, networking.
Q:How do you test the pressure gauge for the pressure vessel?
Pressure vessel pressure gauge according to the test time expired inspection, need to do the following aspects of work:1, should be in accordance with the requirements of the enterprise classification of measuring instruments management requirements, check the current period of measuring instruments should be sent to what level of professional technical supervision and verification of the Department of verification.2, do a good job of measuring instruments in the inspection period, how does not affect the normal work plan?.3, in general, the general accuracy of the pressure meter, sent to the local Technical Supervision Bureau or bureau of professional inspection institutions will be able to verify, concurrent inspection certificate, allowing the legitimate use.4, special requirements of the pressure gauge should be sent to a professional qualification calibration institutions, can not use ordinary calibration instead of professional level of professional calibration, to ensure the safe and lawful use.5, after verification of measuring instruments, timely inspection records and archive, clear inspection cycle and inspection unit and the next inspection time.6. The inspection labels shall be attached to the marked suitable parts of the measuring instruments to be inspected.
Q:When the pressure vessel is in hydraulic test, is the pressure gauge container good or the following?
According to the "pressure vessel safety technology supervision regulations", ninety-sixth pressure test, the pressure vessel connection parts of the fastening bolts must be assembled fully, fastening properly. The test pressure gauge shall be in accordance with the relevant provisions of the seventh chapter. At least two gauges with the same range and calibration shall be used and shall be installed at the top of the container to be easily observed.The pressure gauge hits the top and the bottom, the pressure must not be the same, ah, below closed above, a liquid column static pressure?!
Q:There is no pressure gauge in the process of adding fluorine to the air conditioner
Methods: fluoride 1. will be the first operation of air conditioning in the cooling mode, the fluoride mouth with Freon tank on one end of the tube with fluorine and fluoride, the other end tube (with fluoride thimble tube), installed in the low-voltage end of outdoor unit of air conditioner (suction tube) fluoride mouth. 2., open Freon tank plus fluorine valve on the mouth, can directly add fluorine to the air conditioning, fluorine amount of how much, should refer to the air conditioning nameplate marked "fluoride charge" for fluorine. Quantitative filling with scale. After the fluorine is finished, turn off the valve on the Freon tank and the fluorine nozzle, and let the air conditioner continue to operate. To observe the effect of air conditioning refrigeration, such as air conditioning to achieve normal cooling effect, low end remove outdoor machine (suction) plus fluoride mouth of fluoridation pipe, tighten the cap, and the mouth of the air conditioning fluoride can be used normally
Q:The greater the accuracy of a pressure gauge, the higher or lower the accuracy of the measurement, or the difference between the two
2.5 represents the accuracy of the maximum range of 2.5%, 1.5, 1.5%, so the larger the number, the lower the relative accuracy, when it is necessary to pay attention to its maximum range is how much

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