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: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 is the range of use of a pressure gauge? Why is it at its measuring range of 1/3-2/3?: Pressure gauges are common range instruments, the statutory use of membrane pressure gauges should be used. (2) when the pressure of the pressure is stable, the normal operating pressure shall be at 1/3 2/3, 2 of the upper limit of the measuring range of the instrument

Q:Please show the hydraulic gauge is what pressure? Know the hydraulic piston area with hydraulic products area, how to calculate the pressure?: Hydraulic gauge display is connected with the hydraulic oil pressure oil chamberKnow the piston area of hydraulic machine, but also have to know exactly the external load, also have to consider the mechanical seal resistance, resistance and other factors, to get an ideal external value divided by the piston area can get relatively accurate pressure value.

Q:The role of the pressure gauge on the train: Dude, you're a railroad, aren't you?!Good business knowledge ~!

Q:The role of a pressure gauge: Its function should be to indicate the internal pressure of the pressure vessel (boiler, pipe, etc.)

Q:What's the pressure gauge in the snow?!: The refrigerant (freon refrigerant is a plus) to many professional personnel to operate the number of horses is such a 23= 26=1.25 (a horse) horse horse horse 32=1.5 25=1.75 (1.5 HP) 51=2.5 (2 HP) 7=23.5 horse horse (3 horses) is now commonly used in air conditioning.

Q:Is the absolute pressure or relative pressure measured by an oil pressure meter or a barometer?: Are relative pressure, are relative to the 1 standard atmospheric pressure generated value, but the unit is different

Q:What's the difference between radial pressure gauges and axial pressure gauges? Which one has the best edges?: With no edge, with the edge of the panel is installed, the panel installed with installation table Meng, two, this difference is in the bottom, one is in the back, the general panel mounted in the axial installation

Q:The structure and working principle of the membrane box of the membrane pressure gauge?: The film box can not be fixed in the case, usually at the center of one of the diaphragm opening, as the inlet and fixed, then another diaphragm center is free end

Q:What is the maximum working pressure 6Mpa? How much do you want to fit the pressure gauge?: Selection of measuring range1, when the pressure is stable, the upper limit of measurement range is 1/3 2/3,2 measuring the fluctuating pressure, the upper limit of the measurement range of 1/3~1/23 measuring high and medium pressure (greater than 4MPa) shall not exceed 1/2 of the upper limit of instrument measurement range

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