WE-A Series Dial Type Hydraulic Universal Testing Machine

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Product Description:

、Main functions  
This series machines are mainly designed for tension, compression, bending and cutting test of metal materials and meet with the requirements of GB/T228-2002”Metallic materials-Tensile testing at room temperature”. This machine is also used for compression and bending test of nonmetal materials, such as cement, concrete and so on. Equipping with special auxiliaries, it can be used for mechanical property testing of fastener, wire rope and components. They are ideal testing instrument for project quality testing section, university and college, research institution and industrial and mining enterprise.
、Product features  
1. This machine adopts oil cylinder overhead (underneath) type structure, hydraulic load, hydraulic or manually clamping specimen.
2. The main machine is separated with ergo meter, connected by high-pressure oil pipe and wire,avoiding the influence of ergo meter degree when the specimen is breaking, which makes the value accurate.  
3. Testing force indicator dial adopts closed type, which makes scale clear.
4. Loading speed indicator makes operation more convenient. It has three kinds speed: 0.4 rotor/min, 0.8rotor/min and 2rotor/min.
5. Automatic tracer is installed upright of ergo meter shell and can magnify the straining original shape by 2 or 4 times according to the requirements of test.  
、Product catalogue  
WE-A    Oil cylinder overhead type
WE      Oil cylinder underneath type    Displacement of beams  
WE-B    Oil cylinder underneath type    Displacement of chain
、Technical specifications:






Maximum force(kN





Measuring range and minimum scale (scl.)

0-20kN  0.04kN/scl.

0-50kN  0.1kN/scl.

0-100kN 0.2kN/scl.

0-60kN 0.2kN/scl.

0-150kN 0.5kN/scl.

0-300kN 1.5kN/scl.

0-120kN 0.5kN/scl.

0-300kN 1kN/scl.

0-600kN 2kN/scl.

0-200kN 0.5kN/scl.

0-500kN 1kN/scl.

0-1000kN 2kN/scl.

Accuracy of testing force

±1% of indicated value

Deformation zoom factor of tracing device

2:1 OR 4:1

Clamping diameter for round specimen (mm)





Clamping Thickness of flat specimen(㎜)





Maximum clamping width of flat specimen





Testing space(㎜)











Platen size(㎜)





Distance of bending by pass roll(㎜)





Piston stroke(㎜)


Power supply


Working environment

10~30℃, relative humidity≤80%

Overall dimension (L×W×H)(㎜)

Host machine





Ergo meter







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Q:How to adjust the pressure switch of the electric pressure cooker?
The pressure switch is adjusted to the air valve. When the gas is out, it should be broken off. A little gas can be closed and the air valve is broken. Handshake, that's how I got it
Q:What is the working principle of the pressure gauge?
The models are different and the working principle is different1.WTY-1 - racy liquid pressure type thermometerThe model WTY liquid pressure thermometer utilizes the thermal expansion of a liquidA temperature, capillary, and Bourdon tube for measuring temperatureThe enclosed system is filled with a temperature measuring medium - liquid, when heatedWhen the temperature changes, the pressure in the closed system is due to the liquid bodyThe product changes as a result of a change in the curvature of the spring tubeThe displacement is generated by the end, and the pointer is driven through the connecting rod and the transmission mechanismTurn on the dial and indicate the temperature to be measured. This instrumentThe utility model has linear scale, small temperature package, fast reaction speed and sensitivityHigh, direct reading and other features, almost a collection of glass rod thermometer,Bimetallic thermometers, steam and gas pressure thermometersAdvantage, when the current application of the widest range of performance of the most comprehensive kindMechanical temperature measuring instrument.
Q:The structure and working principle of the membrane box of the membrane pressure gauge?
The free end of the film box is divided into two parts, and the lower end is an air inlet. Then the upper end of the film box is used for driving the connecting rod to work
Q:Cutting acetylene bottles on how there are 2 pressure gauges, which is an adjustable, adjustable number, and oxygen. Thank you!
There are two pressure gauges on the acetylene meter. One is a high pressure meter that measures the pressure in the bottle (i. e. the amount of acetylene in the bottle). Another piece of table is a low table, can be adjusted, which is cutting the required pressure, the pressure is related to the thickness of the plate according to the number ofAn oxygen meter is the same as an acetylene meter
Q:There is no pressure gauge in the process of adding fluorine to the air conditioner
Air conditioning adding fluorine step and method -- air conditioning adding fluorine concrete method operation:1. Turn on the air conditioner;When the fluorine is added in summer, the air conditioner can be directly operated in the refrigeration mode. Because of the heating system can not add fluorine operation, so in winter, when adding fluorine, you should use the method of making the valve line, forcing air conditioning into the refrigeration.2. Connect the fluoride equipment;After the normal starting of the air conditioner, the fluorine adding equipment is connected from the process port of the low pressure valve of the outdoor machine. In this procedure, air and dirt in the fluoride pipe must be removed.3 、 pressure plus fluorine;Low pressure observation in summer, the ambient temperature of about 32 degrees Celsius, the pressure control at around 0.45MP;In winter, high pressure is observed during heating, and the pressure is stabilized at about 1.7MP.4, removal of fluoride equipment;In the condition of removing fluorine refrigeration equipment, nano machine tighten external seal; if remove equipment under the heating state, will cause a lot of freon leak.5. Complete with fluoride.For suspected leakage of air conditioning, the use of detergent bubble examination.
Q:Why isn't the pressure meter back to zero?
When the pressure gauge is removed and the readings are still not zero, the pressure gauge needs to be maintained or repaired.Please find someone to open the examination for specific reasons.
Q:The pressure gauge is broken. Can it be repaired?
It can be repaired.As an important indicator instrument, pressure gauges are widely used in energy, chemical, thermal, oil and gas fields. Pressure meter is an important guarantee to ensure the normal operation of enterprises. It plays an important role in the enterprises, scientific research institutions and national defense applications in china. At present the enterprise application more pressure gauge is mainly of Bourdon tube pressure gauge, Bourdon tube pressure gauge is mainly composed of a spring tube, a transmission mechanism, and the dial gauge case is composed of four parts, spring tube pressure gauge in the use of the process, due to various reasons of vibration, dust, smeary more long time wear and corrosion etc. the pressure gauge will cause the original measurement performance, precision and error beyond the requirements of the relevant provisions. In order to ensure the accuracy and reliability of the pressure meter in the process of production, it is necessary to check and debug it regularly to ensure the stability of the working state of the pressure gauge. The 2 problem caused by pressure calibrator calibrator pressure does not rise up the problem mainly in the following two aspects: media problem, if the line checker in jam or joint hole washer and pressure inlet hole is not aligned, will cause the medium in the oil in circulation is blocked, resulting calibrator pressure rise difficult. In this case, you can clean the oil or adjust the washer position solution; calibrator cup oil is too small, causing pressure to a certain extent because the oil shortage makes the lead screw to drive, for this problem, should be timely to the cup of force and pressure transmission oil.
Q:What's the difference between an oil pressure gauge and an ordinary pressure gauge?
The oil pressure gauge is the vibration proof pressure gauge (the main role is to earthquake, the pointer swing damping effect)The pressure gauge is divided into four kinds according to the sensor: Bourdon tube pressure gauge, diaphragm pressure gauge, diaphragm pressure gauge and diaphragm pressure gauge.Basically, the spring element is different. The spring tube is used to indicate the pressure through the deformation of the 270 degree C tube;The diaphragm drives the pointer through a single diaphragm;The film box is equivalent to the two diaphragm welded together, just like a box, only for measuring gas.The diaphragm is a combination of diaphragm and spring tube.
Q:Pressure meter return error definition
The pressure gauge common breakdown has following four points:1, the needle does not move. That is, when the pressure is raised, the indicator of the pressure gauge does not move.Cause analysis: Cock cock, not open; pressure gauge connection pipe or water pipe blockage; the pointer and the central shaft is loose or pointer stuck.2, pointer jitter.Cause analysis: hairspring damage; plug or trap local channel is blocked; both ends of a center shaft bending, two ends of the shaft rotation is not concentric.3, the pointer can not return to zero when there is no pressure.Analysis of reasons: spring tube permanent deformation, loss of flexibility; pointer and center axis loose or pointer stuck; plug, pressure gauge connecting pipe or water retaining pipe channel blocked.4 、 the instructions are incorrect and exceed the allowable error.Cause analysis: mainly due to the spring tube due to high temperature and overload or excessive deformation; gear wear loose; balance disorder; plug leakage.
Q:Vibration proof pressure gauge precision grade 1.6 and 1.5 difference
The accuracy level of a pressure meter refers to the percentage of the allowable error of the pressure gauge to the full scaleFor example, a pressure gauge full scale is 100Mpa, the accuracy level is 1.6, then its allowable error is 100Mpa * 1.6%= + 1.6Mpa., if the accuracy level is 1.5, then its allowable error is 100Mpa * 1.5%= + 1.5Mpa.According to the current national standard GB/T1226-2001, "general pressure table", the accuracy level is 1.6, the use of 1.5 pressure gauges allowed error by 1.6 levels, the accuracy level can not be changed

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