PWS Series Electric-hydraulic Servo Dynamic& Static Universal Testing Machine

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Ⅰ、Main functions
WDS series are suitable for tensile, compression, bending,cutting shearing and tearing test of rubber peeling and tearing plastic, electrical wire and cable, composite, profiled bar, waterproof roll, etc. They are essential testing instruments 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 crossbeam and imported photoelectric encoder for displacement measure. The controller adopts flush type monolithic computer structure and is equipped multitask operating system and built-in powerful test control software, which includes the test system with measuring, controlling, calculating and saving functions. This machine has the following performances: Automatically calculating stress, elongation rate, tensile strength and modulus of elasticity；automatically preserving all of 16 groups testing data；automatically recording the value of extremal vertex, breakpoint, appointed value of force and elongation；testing result can be scanned by pages and printed；the third class purview management；real-time electronic clock, and automatically recording the testing date and time.
Ⅲ、Technical Specification:

Type parameters	WDS-50
Measuring range of force (kn)	1-50
Accuracy of testing force	±1% of indicated value
Resolution of crosshead displacement Measurement	0.01 mm
Speed range of crossbeam	0.1 mm/min～500 mm/min，step less speed regulation and arbitrary setting
Effective testing space (mm)	700
Power supply	380V±10%，50Hz
Working environment	10℃-30℃,
Main configuration	Imported servo motor and speed adjustment system, precision photoelectric encoder.
Overall dimension of host machine (mm)	740×500×1680
Weight (kg)	450

Q: What does the pressure gauge 1% mean?: Accuracy 1% means the full scale error range of this pressure meter is + 1%.Precision pressure gauge, is expressed as a percentage of the allowable error range of the pressure gauge, generally divided into 0.5, 1, 1.5, 2, 2.5, 3, 4 and seven grades (boiler not 3 and 4), the smaller the value, the higher the accuracy. For example, the dial range 0 ~ 2.5 MPa 2.5 precision pressure gauge, it is shown the allowable error of pointer pressure between the actual pressure value and the measured value of the medium, not more than 2.5MPa * 2.5%= + 0.0625 MPa; when the pressure gauge pressure is 0.8MPa, the actual pressure between 0.7375 ~ 0.862 5MPa.Thus, the actual error of the pressure gauge not only relates to the accuracy, but also relates to the measuring range of the pressure gauge.When the measuring range is the same, the higher the accuracy (i.e. the smaller the number), the smaller the allowable error of the pressure gauge.When the accuracy is the same, the greater the measuring range, the greater the error of the pressure gauge.It is divided by the percentage of allowable error to dial scale value, and the greater the accuracy grade, the bigger the error limit of the dial scale. The greater the measuring range of the pressure gauge, the same accuracy level of the pressure gauge, the absolute value of the pressure measurement it allows, the greater the error.

Q: Cutting acetylene bottles on how there are 2 pressure gauges, the general number of suitable adjustment: A high pressure is used to measure the acetylene pressure inside the tank (0~4MPa)A low pressure is used to measure the output pressure of acetylene (0~0.25MPa)How much is the general adjustment?

Q: Static pressure pipe pile construction, pile machine pressure meter reading how to convert to KN: Static pressure pipe pile construction, the pile machine pressure meter reflects the horizontal bar pressure value (MPa), and the relationship between its pressure and pressure (KN) is related to the parameters of each cylinder.Hydraulic press pile machine press force and pressure meter reading conversion type is as follows:F=2PS+GType: F--------- press in force;P--------- pressure meter reading;S--------- press down the piston area of the cylinder;G--------- chucks, cylinders, plungers, and three weights of the pile driver

Q: How to adjust the upper and lower limits of the upper and lower limit of the electric contact pressure gauge?: The electric contact pressure gauge is directly at the center of the table to the point where you need it. Contact red green is to stop the equipment start equipment you need to adjust according to the pressure, if we can use the special seismic AC electric contact pressure gauge, can only provide AC voltage, if you don't know is AC or DC on the choice of photo electric contact

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

Q: The injection molding machine doesn't have pressure, what's wrong with it and the pressure gauge doesn't reflect it?: 1 check the tank level first. Is it normal?2 then check to see if the oil pump motor has started yet3 check the outlet of the oil pump to see if there is any oil flowing outCan be judged to be missing oil motor failure or oil pump failure

Q: The greater the accuracy of a pressure gauge, the higher or lower the accuracy of the measurement, or the difference between the two: 2.5 represents the accuracy of the maximum range of 2.5%, 1.5, 1.5%, so the larger the number, the lower the relative accuracy, when it is necessary to pay attention to its maximum range is how much

Q: How to choose the accuracy level of the standard pressure gauge when calibrating the industrial pressure meter with the standard pressure gauge? Can I use a stage 0.2, range 0 to 25MP?: The general election results table to use than the calibrated meter high a range check table, table 2.5 the pressure should be 4MPa, 25MPa a lot.A general pressure gauge is a device that measures and indicates higher than ambient pressure by means of a spring tube as an elastic element. In the control and measurement process, the elastic sensitive element of mechanical pressure gauge has the characteristics of high mechanical strength and convenient production, the mechanical pressure gauge is widely used. A pressure meter, a vacuum meter, and a pressure vacuum meter of the order of magnitude equal to or lower than 1, collectively referred to as a general pressure gauge.

Q: Where does the meter check the pressure gauge? How long is the training time?.: Where the metering and testing center is available, they will regularly train and collect evidence. Consult your location's measuring and testing center!