B YAW Series Computer Control Electro-hydraulic Compression Testing Machine

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.
Ⅱ、Product features
1、Host machine is with double column type, which make the conformation compact and arrangement reasonable.
2、Adopt precise electro-hydraulic servo proportional valve. The speed is fast and the controlling accuracy is high.
3、Mechanic limit pistons protection assures the safety of testing.
4、Setup overload protection which acn stop automatically,when
the load exceeds the maximum by 2-5%.
Ⅲ、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：
1、The software integrate bending resistant test and compression resistant test procedure , such as bricks, cement, concrete and mortar.
2、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).
3、There is no subsection in all process. (Or classify according to the requirements of customers.)
4、Complete test in batch automatically and adjust breaking of specimen.
5、Windows Style can be controlled by human or computer.It is easy to manage and control,collect and calculate.
6、Record and save testing datas automatically.

Main Technical Specifications

Specification		YAW-300	YAW-600	YAW-1000	YAW-2000
Measuring range of force（kn）		12～300	24～600	40～1000	80～2000
Accuracy of testing force		±1%
Subsection of force		1、2、5
Accuracy of constant pressure		±1%
Loading speed（kn/s）		1~10
Accuracy of loading speed		±5%
Upper platen size (mm)		125	180	220	300
Lower platen size (mm)		175×175	250×250	220	300
Distance between two platens (mm)		250	255	400	500
Maximum piston stroke (mm)		120	150	150	200
Power supply		380V±10％，50Hz
Working environment		10℃-30℃
Shape of machine		Double column		Large space, Double column
Overall dimension（mm）	Host machine	950×650×1405	1120×660×650	910×580×1800	910×580×1940
	HPS	—	—	950×650×1405	950×650×1405
Weight（kg）		750	850	3050	3250

Q:What do you think of the pressure gauges with snow?: There are usually several laps, respectively, black, blue, red.The pressure and saturation temperature of different refrigerant are different. At each end of the circle is marked with a unit or species.

Q:We use seismic pressure gauge oil, do not know how to come back. Trouble master solution: If the leak proof pressure gauge I advise you not to yourselfOil spills are generally so few: seals, aprons aging, instrument mounted on the equipment, vibration frequently or too large, table cover loose, careless instruments fell to the ground, resulting in deformation of table cover and so on. If you don't find the cause, you'll still leak it.If you want to say hello to suppliers but also advance the gas tank was rushed or silicone oil glycerin, general vibration proof pressure gauge case top has a filling hole, are sealed by the rubber plug, you can use a small Flathead screwdriver to knock the rubber plug (be careful not to damage the rubber plug, and silicone oil or glycerin) fill in the rubber plug can be a good.

Q:How to connect the three terminal points of the remote pressure gauge?: The three terminals of the remote pressure gauge are arranged like this, from top to bottom: 0 bit, 5V bit, middle position (that is, pointer moving contact). The 0 bit provides the pressure feedback signal with the center.

Q:Why should I add a plug valve before the pressure gauge?: The installation of plug valves in front of the pressure gauges is mainly for the convenience of disassembly and installation of pressure gauges.

Q:What are the main technical parameters in the selection of pressure gauges? Thanks: The selection principle is as follows:TypeThe selection of instrument type must meet the requirement of process production. For example, whether remote automatic recording or alarm; by nature side medium (such as the temperature of the measured medium height, viscosity, corrosive, flammable and explosive, dirt etc.) whether to put forward special requirements on the instrumentation, on-site environmental conditions (such as temperature, humidity, magnetic field strength and the vibration of the instrument) type etc.. Therefore, according to the requirements of the process, the correct selection of instrument type is an important prerequisite to ensure the normal operation of the instrument and safety in production.Two, measuring rangeAccording to the maximum and minimum values of the measured parameters, the upper and lower limits of the instrument can be calculated, and the measuring range of the instrument can not be directly taken as the measuring range of the instrument. When we select the upper limit of the scale of the instrument, we should select it in the standard series stipulated by the state. China's pressure gauge measurement range standard series are: -0.1-0.06,0.15; 0-1,1.6,2.5,4,6,10X10 "MPa" (where n is a natural integer. Can be positive or negative).Three, accuracy levelAccording to the maximum absolute error permitted by the process and the best range of the selected instrument, the maximum reference error allowed by the instrument is calculated, and the accuracy of the instrument is determined in the precision grade specified by the state. Generally speaking, the more sophisticated the instrument is, the more accurate and reliable the measurement result is. But you can not believe that the higher the accuracy of the instrument used, because the more sophisticated instruments, the more expensive the general price, the more difficult to operate and maintenance.

Q:What's the difference between diaphragm pressure gauge and diaphragm type pressure gauge?: Simply speaking, the most obvious difference is that the measuring element (elastic sensitive element). As the measuring element diaphragm with diaphragm, and the diaphragm meter with a spring in the header pipe as the measuring element, the diaphragm is only isolated transfer and not sensitive to.Therefore, the diaphragm table can achieve a relatively small range, usually the lowest to 1kPa, the maximum is usually 2.5MPa; and the diaphragm can achieve the range is the spring tube range, usually can be selected between the 0.1-40MPa

Q:See others welding, found that there are two pressure gauges on the cylinder, one is 0-0.3 range as if, and the other is 0-4 range, ask why, is it safety considerations or other reasons? thank: 0-0.3MP is a low pressure meter, which is an oxygen pressure reducer. It converts the high-pressure oxygen into a uniform low-pressure oxygen through the knob handle to supply welding or cutting. 0.3MP's pressure is very common.0- 4MP is a high pressure oxygen meter. The oxygen bottle allows 15MP gas to be filled. This is the gas left in the cylinder at present, 4MP. High pressure makes gas cylinders fill more gas.

Q:Where is the pressure gauge checked?: The pressure gauge is checked by the quality and Technical Supervision Bureau's measurement test.

Q:Which circle should I watch with R22 plus, and which lap should I watch with the additional 410A?: Look at the same place! Just the pressure is different! R410A pressure is higher than R22! Look at the outermost black circle! R22 from 4.5 to 5Kgcm2. R410A added 7.5 to 8KG/cm2 is almost the same!! No matter what refrigerant is different, only the pressure will not change.

Q:First, the water pump remote pressure gauge in the pipe without water, whether the pointer should refer to 0Second, when the inverter is not bad and does not work, whether the table of sliding resistance is bad, so that the frequency converter can not be induced without action. Thank you for your advice.: Remote pressure gauge principle is no water does not mean that there is no pressure, if the pipe is completely closed, the pointer should be in the pipeline static reaction, but if the pipeline is not very closed under the condition of no water, it should be in the zero pointer; 2, remote pressure gauge is only a contact signal is relay output, therefore only need to determine the pressure gauge can have a normally closed contact. Under normal circumstances, the inverter will not affect the working state.

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