WDW Series Computer Control Type Electronic Universal Testing Machine（Single Arm Type）

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Ⅰ、Main functions
WDW series are suitable for tensile, compression, bending cutting,shearing and tearing test of rubber, plastic, electrical wire and cable, composite, plastic profiled bar, waterproof roll, etc. They may add test metheds or rules according to customers’requirement .They are essential testing instrument for quality testing section, university and college, research institution and industrial and mining enterprise.
Ⅱ、Product features
This machine equips alternating servo motor for driving crosshead and imported photoelectric encoder for displacement measure. This machine is accompany with the digital multi-channel closed loop control system which applicates the latest moitoring and control systems with lots of advanced profassional and technical development. Control software can automatically finger out routine data, such as tensile modulus of elasticity, extend rate after rupture, non-proportional extend strength RP0.2, etc. It can realize three close loops control and real time display many testing curves of force-displacement, force-time, and stress-strain. These curves automatically switch. Testing process control and data processing conform to the requirements of GB. This machine has the following performances: Auto zero, auto gear shifting or no subsection, auto indication, auto save, unicontrol or multistep programmed control, auto stop, auto analysis or assistant manual analysis, batch test, testing result statistic, curve select and over load protection. And the machine is beautiful, multifunctional, and oprates easily and reliably.
Ⅲ、Technical Specification:

Type parameters	WDW-1A	WDW-2A	WDW-5A	WDW-1	WDW-2	WDW-5
Measuring range of force (kN)	0.01～1	0.02～2	0.05～5	0.01～1	0.02～2	0.05～5
Accuracy of testing force	±1%
Resolusion of testing force	1/20000 of maximum testing force
Relative error of displacement	±0.5%
Resolusion of crosshead displacement measurement	0.01 mm
Speed range of crossbeam	0.01 mm/min～500 mm/min，step less speed regulation and arbitrary setting
Valid testing space (mm)	800
Power supply	220V±10%，50Hz			380V±10%，50Hz
Working environment	10℃～30℃, relative humidity≦80%
Main configuration	Alternating servo motor and speed adjustment system, precision photoelectric encoder.			Imported servo motor and speed adjustment system, precision photoelectric encoder.
Overall dimension of host machine (mm)	600×420×1700
Weight(kg)	300

Q:How does the fire pump pressure meter work?: Imagine a floor of 3 meters, the 27 floor is 81 meters, so at least 81 meters to provide water pump pressure + atmospheric pressure, converted to 9.8*81*1000pa+1.01*100000pa=0.8938Mpa

Q:The electric contacts pressure gauge, electric contact is often the first contact is damaged, burned, the general use of the electrical contacts to control AC contactor, there is no way to prolong the service life, add a damping absorption of the original electric contacts at both ends can be? What should I do?: Although the contact points of an electric contact meter can be directly used for AC 380 V voltage, it is easy to burn out. In daily design, the 24 volt DC power supply is used to switch the DC relay, so that the contact life can be prolonged. 24 V DC power is also a contactor price.

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 big is the thread type of the y-60 pressure gauge?: Small words may be 1/2 NPT, and the big one is M20*1.5.

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

Q:Is the 16 kilogram electric pressure gauge and the electric contact pressure meter the same?: The principle is the same, only one is the contact point, and the other is the electronic component.

Q:Ytn10 and yn10 have these two types of pressure gauges? What do these two models stand for?: YN and YTN represent proof pressure gauge is just not the same manufacturer mark.Y stands for pressure gaugesT stands for spring tube structureN shockAlso, there is no YN10 and YTN10, only YN100 and YTN100

Q:The injection molding machine doesn't have pressure, what's wrong with it and the pressure gauge doesn't reflect it?: Pump running properly, the system pressure is not, then focus on the pressure valve

Q:What are the thread connections of the pressure gauges?: Upstairs is indeed correct, these three are very common, usually may also have BSP and NPT and other standard interfaces, see which side, the company's internal standards as much as possible, convenient for maintenance

Q:What will happen to the calibration process if the calibrator of the pressure gauge is not clean?: Because the air is compressible, the hydraulic device check if there are a lot of air, the number of hydraulic oil every pressure signal needs to inject the high pressure chamber is bigger, the exhaust is actually check as far as possible before the hydraulic oil filled pressure chamber, to reduce the need to check the injection quantity. In the case of more air, the screw type pressure generating device may not travel enough, need to play more than a few times, other pressure generating devices also need to operate more than a few times.If there is a small amount of air in the hydraulic device, the pressure of the air will be more stable because of the cushion of the air.

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