Electro-hydraulic compressive test instrument

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Steel pipe compressive test machine is mainly used for brick, stone, cement, concrete and other building materials, compressive strength test, can also be used to test the mechanical properties of other materials.

Machine Summary:

This compressive test instrument is mainly used for brick, stone, cement, concrete and other building

materials,compressive strength test, can also be used to test the mechanical properties of other materials.

Hydraulic System:

The oil tank is sucked through the filter screen and be inhaled pump oil ,through the petroleum pipeline of

oil pump transport to oil valve,When the hand wheel to send off the oil, due to the role of oil will push the

piston, the oil from the return pipe to tank,when the hand wheel to open get the oil, then the working fluid into

the fuel tank through the tubing, pressure tubing through and through oil return valve to tank.

Control System:

Electro-hydraulic compressive test instrument adopts hydraulic loading, electronic measuring, with a load of

figures, the loading rate shows that the maximum load to maintain, as well as overload protection and power

data retention and other functions.

Safety Protection Device:

When the test force more than 3% of the maximum test force, the overload protection, oil pump motor shut down.

Fixture:

Whole set fixtures include: a set compression platen fixture

Technical Parameter:

Model	Compressive test instrument
Max load	100kN （resist bend）	300kN （resist bend)	302kN （resist bend and compress）
Test force measuring range	4%-100%FS KN
Test force showed the relative error	≤indicating value±1%
Test Force Resolution	0.01KN
Hydraulic pump rated pressure	27MPa
Bearing compress plate size	φ155mm
Maximum distance between the upper and lower plate	230mm
Resist bending roll diameter	φ32mm
Maximum distance between the upper and lower resist bending rollers	165mm
Between two bending rollers upon the center distance	150mm
Between two bending rollers under the center distance	450mm
Piston diameter	φ130mm
Piston stroke	80mm
Motor power	3 phase 0.75 kW
Outside dimension	850×620×1340mm
Net weight	400Kg

Q: How to connect the household air conditioner pressure gauge?: Before adding snow to open air conditioning, after the external machine started, the table connected to air conditioning gas nozzle (to receive a relatively thick that housekeeper, air-conditioning pressure in general 2.8MPA

Q: In which industry does the pressure gauge use more?: Oil and gas extractionoil refiningPetrochemical and chemical industrypowerwater treatmentPapermakingsteelPharmacyfood

Q: Why should I add a plug valve before the pressure gauge?: The installation of plug valves in front of the pressure gauges is mainly for the convenience of disassembly and installation of pressure gauges.

Q: What are the procedures for checking the pressure gauge in that department?.: The Bureau under the quality supervision bureau is a pressure room or a heating roomJust take the watchband and fill out the inspection form in the mail room

Q: 250MPa calendar force, 150MPa verification point when the step-up is 148MPa, when the buck is 149MPa, please tell me how to calculate the value of error, return error is how to count? Thank you: Pressure meter return error: under the same conditions, the measured value is constant, the measuring instrument travel direction is different, the absolute value of the difference of its indication value. Note: return error is also called lag error."The return error" and "dead zone": JJF1001 "general terms and definitions for measurement", the term "no return error", but in 7.13 another definition of the term "dead zone" to describe "causing maximum variable interval dynamic measuring instrument in response to changing incentives". Therefore, return error is an index to measure the response characteristics of equipment".Does the return error accumulate? Take the positive and negative rotation of the motor as an example, the return error of the transmission mechanism should not be accumulated once and for all. In other words, back and forth movement many times, return error or fixed interval, does not increase.Application in the motor: the motor itself is no return error, how much encoder reads, how many pulses the stepper motor turns, and the servo system is usually higher than the stepper motor accuracy. The return error is generated by the drive mechanism, such as the screw rod connected on the output shaft of the motor. Therefore, the servo system can accurately control the motor, can't handle the return error. Therefore, the zero bit switch can eliminate zero return error in the course of motion, in addition to the zero power seeking of the incremental encoder. Even if the absolute encoder does not require power on and zero, the photoelectric switch can also be used to eliminate the return error. When there is no return error in the direction of return, it is necessary to set a zero position switch at both ends, so that the motor is backward to zero in this direction, and then the zero is used to measure the movement displacement.

Q: What's the function of the oil pressure gauge? Where does it fit?: The role of oil filled is shockproof, so there are places where vibration can be used, but it should be noted that it has two kinds of silicone oil and glycerin, and if used for outdoor low temperature, must use silicone oil table.There are many occasions of shock, such as injection molding machines and compressors, which can be filled with oil pressure gauges

Q: What's the difference between radial pressure gauges and axial pressure gauges? Which one has the best edges?: In the case of installation, the center line and the surface of the joint are vertical, while the center of the joint and the surface of the joint are horizontal! There are three kinds of edges, the front, the middle, and the back! Both axial and radial edges can be used as customer requirements and installation occasions!

Q: Does the pressure meter belong to the field of mechanics?: Scope of inspection instruments category

Q: Are you talking about using a gold contact? I'm a small relay for 24V. Do you need a gold contact?Let's talk about it.: Yes, the watch itself has a contact point. Don't you mean the table?