WDW-T series Computer Control Type Electronic Universal Testing Machine

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Ⅰ、Main functions

This machine is applicable for tensile,compression, bending, shearing, peeling and tearing test of metal materials and non-metal materials.They may add test methods or rules of other materials to customers’need . They are essential testing instrument for quality testing section, university and colleges, research institution and industrial and mining enterprise.

Ⅱ、Product features

This machine adopts the most advanced and reliable console model constructer, imported whole digital alternating servo motor and servo adjustment system, imported load sens and photoelectric encoder. Whole digital measurement and control system can realize high precision, wide range measure and three closed loops control. The system of measure and control adopts high precision transducer, imported high quality electron device and whole digit design. And the card also complies with PCI2.1 and automatically distributes resources. Integrated double channels precision amplifier can automatically zero. Build-in large scale CPLD can program logistic chips, high speed operate and real time process. The whole digital control adjustment and demarcation can supply Single AD software interface. The software adopts blocking design, has many kinds of controlling means such as displacement, force, deformation, (stress and strain) metal tension and so on. Multistep control procedure can be compiled using program editor of the software by ourselves. We can analysis and process the testing data according to corresponding standards, and automatically finger out routine data, such as tensile strength, yield strength, modulus of elasticity, non-proportional extend strengthRP0.2, etc. Batch program of the software can sum up and compare the result and curve of one batch of specimen. The testing data adopts database management, supply word Exel and self-defining progra and meet with the special requirements. Flexible editing mode of report forms can print satisfied table.

Ⅲ、Technical Specification:

Type parameters		WDW-T50	WDW-T100	WDW-T200
Measuring range of testing force (kN)		0.2%--100%FS
Accuracy of testing force		±1%
Resolution of force		1/200000 of maximum force,no subsection full travel or seven subsections according to the requirements of customer
Accuracy of displacement measure		±0.5%
Resolution of displacement measure		0.03μm
Maximum value of displacement（mm）		0.001
Adjusting range of displacement speed		0.001-500mm/min
Accuracy of deformation measure		≤±0.5%
Range of deformation measure		2%～100%FS
Control accuracy of displacement speed		velocity＜0.01mm/min，±1.0%of the point； velocity≥0.01%mm/min，±0.2% of the point.
Effective tension testing space (mm)		650	650	600
Compression testing space (mm)		650	650	650
Width of testing space (mm)		560	560	600
Nip size(mm)	Thickness of flat specimen	0～14	0～14	0～20

Q:How to choose a pressure gauge?: The first is selected according to the type of environmental characteristics, such as whether the need of explosion-proof, and then select the range, the general scale selection principle is that the pointer under normal pressure, shown in the 2/3 position is appropriate, margin; according to the actual demand, choose the suitable range of precision; the interface is needless to say. Good luck！

Q:Is the boiler pressure gauge mandatory?: The use of pressure meter of boiler has its special requirements, because the security level of the boiler is high, prone to burst pipes, excessive temperature and pressure, the drum is the key equipment, so the more stringent requirements than the general pressure gauge. Considering the safety of the boiler, steam boiler and national mandatory requirements, the pressure gauge must be per package the first half of the test once, also must have the qualification of certification institutions. At the same time, the pressure gauge requires a large dial of 250. In fact, not just the boiler requirements, other types of pressure vessels have such requirements.

Q:What is a pressure gauge and how to make it?: An instrument with an elastic element as a sensing element to measure and indicate higher than the ambient pressure.

Q:What is the state of the warranty period for the ordinary pressure gauge?: The pressure gauges are calibrated once every 6 months,Wuxi Hui Hua Instrument Technology Department

Q:How big is the thread type of the y-60 pressure gauge?: This size is generally M14 * 1.5 external thread.

Q:Why should the pressure gauge be checked regularly?: As the pressure gauge is used for a period of time, the internal parts are subjected to wear and deformation, which results in various failures or variations in the magnitude of the instrument, resulting in loss of accuracy and over tolerance. In order to ensure the accuracy of the pressure meter value, in order to achieve the correct indication, safe and reliable operation of the purpose, the pressure gauges should be periodically tested.

Q:Static pressure pipe pile construction, pile machine pressure meter reading how to convert to KN: The single cylinder 1MPa is 12.5 tons. Two cylinder 1MPa is 25 tons...

Q:What are the diaphragm materials for the diaphragm pressure gauge?: Basically oil the following:316L stainless steel, HC/HB (Hastelloy), Ta (TA), Ti (TI), with PTFE (polytetrafluoroethylene), Monel alloy

Q:Can you use the precision pressure gauge of level 0.25, measuring range (0~10) and MPa to verify the general pressure gauge of level 1, measuring range (0~6) MPa? Why?: Yes, measurement pressure gauge inspection requirements, standard table accuracy requirements greater than or equal to 4 times

Q:The difference and relation between the electric contact pressure gauge and the remote pressure gauge: The electric contact pressure meter is suitable for measuring the pressure of copper, alloy free of corrosion, explosion free, non crystallization of various liquids, gases and other media. When the electric contact manometer is used in conjunction with the corresponding electrical device, the two bit automatic control and sending (alarm) of the maximum or minimum pressure preset to the pressure system under test can be achieved. The electric contact pressure gauge has the function of measuring and controlling. It can freely set up the upper and lower control pressure values. The operation is stable and reliable. It is widely used in petroleum, chemical, power stations, metallurgy and other industrial enterprises and electromechanical equipment.The resistance remote pressure gauge consists of a spring tube, a pressure gauge, a slide wire, a resistance transmitter, etc..The function principle of the mechanical part of the pressure gauge is similar to that of the spring tube manometer. Because the resistance transmitter is arranged on the gear drive, so when the fan gear shaft gear transmission mechanism of deflection, rotating arm resistance transmitter (brush) corresponding to the deflection, brush sliding on the resistor, the change of the measured pressure is changed into a resistance value, and at the two time the meter, indicating a corresponding reading value. At the same time, the primary instrument also indicates the corresponding pressure value.

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