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

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Product Description:

、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.
、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.
、Technical Specification:









Measuring range of force (kN)







Accuracy of testing force


Resolusion of testing force

1/20000 of maximum testing force

Relative error of displacement


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)


Power supply



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)




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Q:Do pressure gauges need to be installed for pressure drainage?
You don't need it unless you have a pressure gauge on your system
Q:Accuracy grade of pressure gauge
China's general industrial pressure meter is divided into 4 accuracy levels, in line with the JJG52-1999 "Bourdon tube general pressure gauge, pressure vacuum table and vacuum meter" verification regulations, the pressure table prepared by the allowable error. These 4 levels of accuracy are: 1, 1.6, 2.5, and 4. Allowable error (calculated according to the percentage of the upper limit of measurement) is 1%, 1.6%, 2.5%, 4%, respectively.China 2005 new digital pressure meter verification regulations promulgated and implemented, in line with JJG875-2005 "digital pressure gauge verification regulations.". The accuracy of the pressure is respectively 0.01%, 1.6%, 0.02%, 0.05%, 0.1%, 0.2%, 0.5%, 1%, and so on.
Q:Can the pressure gauge be reversed installed?
Yes, the location does not affect the accuracy of the data
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:How do you recognize the pressure gauge?
To recognize the pressure gauge units, the general units are Mpa, mbar, bar, PA, and so on. Then see where the pointer points.
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:How is the range of pressure gauges determined?
I'm a pressure gauge. Let me tell you. I hope I can help you
Q:Pressure meter usage
Use, maintenance and repair of pressure gauge:The instrument shall be installed at a temperature of -20 to 40 DEG C in the surrounding environment, with a relative humidity not greater than 80% and an altitude below 2000m.Gauges are generally used at temperatures up to 3/4 of the upper limit.When setting the setting value of the instrument, the lower limit should be adjusted first, and then the upper limit of the setting should be adjusted.Switch off the power supply when opening the terminal box or setting the setting value. When the wires are properly connected, they should be carefully checked and tested, and they will be put into use without any error.The instrument should be kept dry and clean during use. Periodic verification and inspection shall be carried out according to the calibration period.Note: 2.5 is MPa and 6Mpa is not model, it is measurement range, use method is same!
Q:What's the difference between a sanitary pressure gauge and a diaphragm pressure gauge?
Sanitary diaphragm pressure gauge is generally, support online online cleaning, disinfection, pressure scale thread structure measured medium in the body was left in the application, generally not in health class. Diaphragm pressure gauges are not all sanitary pressure gauges.
Q:What do you think of this air conditioner pressure gauge?
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.

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