WDS Series Digital Display Type Electronic Universal Testing Machine （Single Arm Type

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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-1A	WDS-2A	WDS-5A	WDS-1	WDS-2	WDS-5
Measuring range of testing force (kN)	0.02～1	0.04～2	0.1～5	0.02～1	0.04～2	0.1～5
Accuracy of testing force	±1% of indicated value；
Resolusion 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)	800mm
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:Note: 1 I asked not the difference between the diaphragm pressure gauge and the ordinary pressure gauge;2 what I ask is not the difference between the diaphragm pressure gauge and the diaphragm pressure gauge;I think someone has answered a similar question before, and when it comes to the diaphragm, it's driven by isolated liquid. What's that diaphragm? Or the diaphragm is the diaphragm that contacts the measuring medium: Diaphragm pressure gauge has two parts: part of the meter (spring tube pressure gauge), and the other part of the isolated body (chemical seal, diaphragm welding carrier). After the diaphragm detects the pressure, the pressure is transmitted to the spring tube through the filling oil between the isolator and the spring tube, and the pressure is displayed on the Bourdon tube pressure gauge.The diaphragm pressure gauge is directly displayed on the diaphragm pressure gauge after the diaphragm transfers the pressure directly to the connecting rodThere are two differences:1, measuring range is different: diaphragm pressure gauge measuring range 0.001MPa-4MPa (mainly used for micro pressure); diaphragm pressure gauge measuring range 0.06MPa-60MPa (mainly used for atmospheric pressure and high pressure);2, diaphragm effect is not the same: diaphragm pressure gauge diaphragm from the role of elastic sensitive components; diaphragm pressure gauge diaphragm only from the isolation and transmission of pressure; elastic sensitive element has a spring tube completed;3, the structure is not the same: diaphragm pressure gauge is self-contained structure, diaphragm pressure gauge is composed of Bourdon tube, pressure gauge, isolator, transmission oil and accessories.

Q:The difference and relation between the electric contact pressure gauge and the remote pressure gauge: The use of the two is different. One is used to control the other, and the other is to send the signal to the farther end of the monitor.The electric contact pressure gauge consists of measuring system, indicating system, magnetic auxiliary contact device, shell, adjusting device and junction box (plug seat), etc.. The working principle of electric contact pressure gauge is spring pipe in the measuring system under the action of the pressure of the measured medium based on the force generated by the end of spring pipe corresponding elastic deformation displacement transmission rod through a gear transmission mechanism with the help and amplification by the fixed gear instructions (along with contact) by the measured value indicated in the table. At the same time, when the contact and set on the pointer (upper or lower) contact (break or close) instantaneous, resulting in the circuit control system can be switched on or off in order to achieve the purpose of automatic control and alarm.The remote pressure gauge is suitable for measuring the pressure of liquid, steam and gas which can not corrode the steel and copper alloy. Because the resistance transmission pressure gauge is arranged inside the sliding line resistance transmitter, so the measured values of two meters on electricity to far away from the measurement, in order to realize centralized monitoring and remote control. In addition, the pressure gauge is capable of indicating pressure in place so as to facilitate on-site inspection.

Q:How to connect the household air conditioner pressure gauge?: 1) check the temperature and condensation of the liquid supply pipe and the return air pipe. Start the air conditioning operation 20min in the cooling case, if the outdoor unit valve and return pipe of condensation, touch the return pipe temperature was lower than the liquid supply tube temperature of the refrigerant in the system that is sufficient, the normal operation of air conditioning. One of the following circumstances, is that: the lack of refrigeration liquid supply tube condensation return pipe without dew; the liquid supply pipe and a liquid supply tube frosting; no dew public cold, back to the trachea is cool; the liquid supply pipe and gas tubes are not cool. (2) measure the pressure at the return valve. The pressure gauge is connected to the liquid air pressure angle valve, low pressure measured during operation, under normal circumstances, when the environment temperature is 30 degrees Celsius, low pressure cooling operation for 0.45~0.55Mpa heat pump type air conditioner should be 1.8Mpa in the heating operation, if less than the pressure, the shortage of refrigerant. The lower the pressure, the greater the leakage. If no pressure, then the refrigerant has leaked.(3) nitrogen pressure (filling 1.5Mpa nitrogen), four joint observation of two connecting pipes, gas valve stem, part of the liquid inlet and whether the oil spill that traces of oil.(4) use the tester to find out the general part of the leak, and then spread it on soapy water. If there is a bubble, it is the leak point.(5) the leak detection of the indoor unit and the connecting pipe of the heat pump type air conditioner shall be carried out under the condition of heating operation, because the inspected part is in a high pressure state at this time, and it is easier to find the leak point.

Q:Precision pressure gauge manufacturers can achieve precision 0.05 pressure gauges?: According to the JJG49-1999 spring tube precision pressure gauge and vacuum meter verification regulation, the accuracy degree of the pointer precision pressure gauge is:0.6, 0.4, 0.25, 0.1, 0.06The accuracy of the digital table is followed by 2.5, 1.6, 0.5, 0.4, 0.2, 0.1, 0.05

Q:Measurement data, installed in the normal position, do not know whether to reverse installation, please professionals to help answer! Thank you Urgently!: Yes, the location does not affect the accuracy of the data

Q:What is the pressure gauge called?: The internal structure of the pressure gauge is different. The most common is a differential pressure gauge

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:What is the PSJ of the pressure gauge?: PSI full name in English is Pounds per square inch.P is pound pound, S is square square, and I is inches inch.All the units in metric units can be calculated: 1bar = 14.5psi1psi=6.895kPa=0.06895barEurope and the United States and other countries are accustomed to using psi as a unitIn China, we usually use the "kilogram" to describe the pressure of the gas (not the "Jin"). The unit is "kg/cm2", and a kilogram of pressure is one kilogram of force acting on one square meter.While in a foreign country commonly used unit is "Psi", the unit is "lb/in2", is "psi", this unit like Fahrenheit (F).In addition, there are pressure units such as Pa (Pascal, Newton, one square meter), KPa, MPa, Bar, millimeter water column, millimeter mercury column, etc..1 bar (bar) =0.1 MPa (MPa) =100 kPa (KPa) =1.0197 kg / cm21 standard atmospheric pressure (ATM) =0.101325 MPa (MPa) =1.0333 bar (bar)Because the unit is very small difference, if it is not to be accurate calculation, you can remember:1 bar (bar) =1 standard atmospheric pressure (ATM) =1 kg / cm2 =100 kPa (KPa) =0.1 MPa (MPa)

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.: Remote pressure gauge principle is no water does not mean that there is no pressure, if the pipe is completely closed, the pointer should be in the pipeline static reaction, but if the pipeline is not very closed under the condition of no water, it should be in the zero pointer; 2, remote pressure gauge is only a contact signal is relay output, therefore only need to determine the pressure gauge can have a normally closed contact. Under normal circumstances, the inverter will not affect the working state.

Q:How do remote pressure gauges receive frequency conversion?: [1] inverter 10V, VF, GND point is the voltage control frequency of external contacts, is not directly connected to other signals, and can not be defined as other functions, in addition to voltage signals. As for the remote pressure gauge, one is divided into upper and lower limit, switch signal output, (also an instant signal, leaving the lower limit pointer is disconnected, cannot keep) called electric contact pressure gauge; there is no so-called resistance output, the upper and lower limit, through the pressure controller or by the PG board needs to transform into a voltage or current signal to control the frequency converter. Therefore, the remote pressure gauge can not be directly in the inverter 10V, VF, GND points, you need to control the inverter through some means.[2]: pressure gauge pressure gauge (English Name: pressure gauge) refers to the elastic element as the sensitive element, measuring and indicating higher than ambient pressure meter pressure gauge installation of Shanghai Wang ring 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.

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