WDS Series Digital Display Type Electronic 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: 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: I want to use a frequency converter and a remote pressure gauge to control a submersible pump, using the on-off control, constant pressure water supply, how to connect and set up: I think you may be wrong! More (money, easy) scheme is using 1 transmission pressure gauge + inverter, constant pressure control. But not switch control. Control is continuous.The only output switch contact transmission pressure gauge is the electric contact pressure gauge. Inside a rheostat, with the change of pressure, sliding rheostat output resistance change. But it should be noted that this watch is certainly three line connection (don't understand NO/NC/COM).Like ABB, ACS510 series and so on, you can access to the X1 2,3,4 terminal, so as to achieve constant pressure control, specifically, you have to look at your inverter manual

Q: What kind of valve does the pressure gauge valve belong to?: Usually you ask this question is wrong! Because at low pressure, both spherical and needle valves can be used!Because it is used to distinguish between high pressure and low pressure!But reliability is good needle valve!

Q: Drese D800 inverter and a remote pressure gauge how how to set the constant pressure connection: Structure principle:The resistance remote pressure gauge consists of a spring tube, a pressure gauge, a slide wire, a resistance transmitter, etc.. The function of the mechanical part of the pressure gauge is similar to that of the general Bourdon tube pressure gauge. Because the resistance transmitter system is arranged on the gear drive, therefore, when the fan gear shaft gear transmission mechanism of deflection, rotating arm resistance transmitter (brush) corresponding to the deflection due to sliding on the resistor, brush, change makes change transform the measured pressure value of the resistance value, and to two meters, to indicate the value of reading. At the same time, the primary instrument also indicates the corresponding pressure value.Turn left and turn right |?Wiring method:Open the box pressure on the right side of the table, you can see with three terminals 2, 3, 1, three respectively, the corresponding terminal is connected to the inverter control board of the V+, AI, 0V, and 0V in the inverter control board resistor terminal is connected in series with a 400 ohm 2 Watt (due to modifications, far from the pressure gauge can only receive less than 6 volt voltage power supply, and our frequency is 10 volt power supply, so in a series resistor in the circuit).Following chart:Turn left and turn right |The frequency converter is set as an external terminal and the given signal is on the line. Specific requirements, on-site tuning.

Q: What does "PV" and "SV" on the control meter of remote pressure gauges mean?: SV is the set point, and PV is the measurement valueThe remote pressure gauge usually converts pressure into electrical signals. The electric contact pressure gauge changes when the pressure approaches the setting pressure, and the signal contacts are normally open and normally closed. The electric contact pressure meter provides the start stop signal for the control circuit of the frequency converter, and the remote pressure gauge adjusts the output of the frequency converter, that is to say, to control the amount of the upper water.

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: What's the basis for the inspection of the safety accessories (safety valve and pressure gauge) of the simple pressure vessel?: (1) the maximum working pressure is greater than or equal to 0.1MPa; (note 1-2)(2) the product of work pressure and volume is greater than or equal to 2.5MPa = L; (note 1-3)(3) liquid containing gas, liquefied gas and the highest working temperature is higher than or equal to its standard boiling point.The accessories of the pressure vessel that meet the above requirements need to be checked.

Q: First, the water pump remote pressure gauge in the pipe without water, whether the pointer should refer to 0Second, when the inverter is not bad and does not work, whether the table of sliding resistance is bad, so that the frequency converter can not be induced without action. Thank you for your advice.: The pressure gauge (English Name: pressure gauge) refers to the elastic element as the sensitive element, measuring and indicating higher than ambient pressure meter is widely used, it almost all the industrial processes and scientific research. In the heat pipe network, oil and gas transmission, water supply system, vehicle repair and maintenance shop, and other fields can be seen everywhere. Especially in the control and measurement process, because 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.

Q: What is the working principle of the pressure gauge?: The working principle of the pressure gauge:The pressure gauge through the sensitive element in the table (Bourdon tube, bellows, bellows) of the elastic deformation, then the conversion mechanism of table movement will transfer to the pointer pressure distortion caused by pointer rotation to show pressure.

Q: Excuse me, where can I check the pressure gauge in Chongqing?: The local quality and Technical Supervision Bureau will be fine. You can also go to your district level Technical Supervision Bureau to do the verification, they are all legal measurement accreditation institutions.The price depends on what kind of pressure gauge you have, the vacuum meter or not, the range, the accuracy level, the medium, and so onIn fact, the test is more expensive than buying a new watch, but there is no way that the state has to check the mandatory measuring instruments, the new table should also be checked again, half a year.

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