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1. Size of concrete specimens for compression strength test Concrete cubic specimen: 150X150X150mm, 100X100X100mm, 200X200X200mm Cylindrical concrete specimen: diameter 150X300mm, diameter 100X200mm, diameter 200X400mm 2. Brief introduction of concrete compressive strength test procedure 1) Placing the concrete specimen---place the test specimen on the lower bearing block. Carefully align the axis of the specimen with the center of thrust of the spherically seated block. 2) Apply the load continuously and without shock until the specimen fails and record the maximum load carried by the concrete specimen during the test. Note the type of failure and the appearance of the concrete. 3.Relative test method GB/T 50081 standard for test method of mechanical properties on ordinary concrete ASTM C39 standard test method for compressive strength of cylindrical concrete ASTM E74 practice of calibration of force-measuring instruments for verifying the force indication of testing machine 4. Specifications for concrete compressive strength testing machine Max. capacity: 3000KN( lower or higher capacity can make to order) Grade of testing machine: grade 1 Distance between upper and lower compression platen: 320mm Stroke of piston:50mm Size of upper and lower compression platen:375X375mm Weight :about 900kg
1. Introduction and test principle of compression strength measuring The compression testing machine is to measure compression strength of corrugated boxes in the situation of pressure and protect functions of packages for the objects filled in the packages. Test principle: (1) Corrugated boxes compression strength test, loading to the corrugated boxes using a compression testing machine at a certain constant rate untill corrugated boxes are broken or till certain load or displacement are reached. (2) Corrugated boxes stacking test, loading a certain force to the corrugated box using a compression testing machine untill corrugated box is broken or sustain a certain time period. When measuring deformation of corrugated box during compression test, an original load should be set as a datum point. The datum point can refer to the following chart: Average compression force(N)Original force(N) 101-200 10 201-1000 25 1001-2000 100 2001-10000 250 10001-20000 1000 200001-100000 2500 2. Functions of compression testing machine This machine is applicable to metal, cementing compound, tubes, sectional bars, aerospace, petrochemical, waterproof rolls, wire and cable, textile, fiber, rubber, ceramics, food, mechanical packaging, geo-textile, film, wood, paper and other industries and quality supervision department, and it also can be used in college for teaching demonstration. 3. Specification of compression testing machine 1 Max. Load 20KN 2 Resolution of test force 1/300000 3 Resolution of displacement 0.001mm 4 Precision of crossbeam displacement 0.5% 5 Precision of deformation 0.5% 6 Measuring range of test force 1%-100%FS 7 Relative error of test force 1% 8 Relative error at zero point 0.5% 9 Speed of crossbeam 0.01-500mm/min 10 Precision of crossbeam speed 1% 11 Speed range of load 0.005%-5%FS/s 12 Precision of load speed When speed is less than 0.05FS/s, precision is within 1% of set value, when speed is more than 0.05FS/S, precision is within 0.5% of set value 13 Speed of deformation 0.005%-5%FS/s 14 Precision of deformation speed When speed is less than 0.05FS/s, precision is within 1% of set value, when speed is more than 0.05FS/S, precision is within 0.5% of set value 15 Stroke of crossbeam 900mm 16 Effective tensile height 650mm 17 Effective test span 400mm 18 Effective compression height 800mm 19 Diameter of compression platen 100mm 20 Voltage and power 220V,50Hz, 700W 21 Dimension of main machine 650X450X1650mm 22 Weight of main machine about 300kg
High voltage distribution switchgear 1) general A complete set of indoor equipment of a single bus bar or double bus bars segmented system rated at 3kvto 12 kv in voltage and 50 hz in frequency. It has the functions of receiving & distribution power, and controlling, protecting and measuring circuit 2) advantage 1:anti-corrosion cabinet, can be used in complex working condition2:intelligence and easy control 3:multi protection function 4:easy operation and maintenance 5:removable and full closed
1.Model:WDW-100 2.Product name:computerized electrical universal testing machine 3. Applications of testing machine This machine is applicable to metal, cementing compound, tubes, sectional bars, aerospace, petrochemical, waterproof rolls, wire and cable, textile, fiber, rubber, ceramics, food, mechanical packaging, geo-textile, film, wood, paper and other industries and quality supervision department, and it also can be used in college for teaching demonstration. 4. Features of testing machine 1) Adopting aluminum alloy cover, with attractive streamline structure 2) Mainly used to test mechanical properties for metal, non-metal and composite materials 3) Adopting precision auto control and data acquisition system to realize fully digital adjustment to data acquisition and control process. During test, it can test max. Bearing tensile force, compression force, tensile strength, deformation, elongation, yield point and other technical specifications 4) After test, the above parameters can be calculated automatically through main controller according to the test parameters, which are set before test and meantime display the corresponding test results. All test parameters can be saved and inquired after test, also can be printed out. 5) With remote control box to realize speed adjustment of crossbeam, flexibly and freely switched 6) With functions of automatic return to original position, intelligently, efficiently, quickly 7) With limit position function of any working position and over voltage, over current protection functions, reliable and safe 8) With many control modes of constant speed control to force, stress, deformation, strain and low cycle and user self-programming control 9) Switch among many test curves: stress-strain curve, load-deformation curve, load-displacement curve, load-time curve, deformation-time curve, displacement-time curve. Partial enlargement, overlap and comparison. 5.Spec. of testing machine
• conformity to international standards – iec, ul, csa, ce • 9-150 amps, 3 and 4 pole versions, ac/dc coils • high temperature limits • different levels of power and control contacts • inbuilt 1 no + 1 nc auxiliary contacts • high electrical life • fuse-less type 2 coordination charts available
• ever higher performance for your motors assured by: - the factory settings, which provide a high quality drive from the very first time the power Is turned on - the integration of standard (u/f), performance (sensorless flux vector control, or svc) And pump/fan (quadratic profile kn²) control profiles - high dynamic performance on acceleration as well as on braking - excellent speed regulation on machine load surges • reduced noise and maintenance: - no fan on models up to 0.75 kw at 240 v - cassette type fan, operates automatically on detection of specific temperature setting • designed for easy fitting and wiring of the drive: - a single tool - power terminals not tightened, ready for wiring - easy access angles - numerous, easy to identify markings • fast detection and protection against the motor current peaks associated with certain Applications (motor switching, catching on the fly, etc.) • perfect integration of single-phase 240 v model into the electrical network thanks to Its built-in emc filter
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Eddy Current Displacement Transducer Sensor NEW AND ORIGINAL PACKAGE WITH ONE YEAR WARRANTY Item NO.: EPRO PR6480/031-000 Order(MOQ): 1 Payment: T/T Price Range: 1 - 5 Color: Depends on material
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Cooling equipment and accessories, server fan,cooling fan,industrial cooling fan. voip card and accessories, fuse,relays can also be supplied..Shipping
Electrical breaker, megnatic contactor, plc, inverter, vfd, motors, copper cables, electronics circuits.
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The DIY Hydraulic Maze Game is an engaging and interactive puzzle that challenges players to navigate a ball through a square maze using hydraulic principles. Crafted from MDF, the maze features intricate pathways and a unique tilting mechanism for added gameplay dimension.
Features 1) Translucent body, RGB illusion fiber optic light bar, 4 sets of on-board light effects switchable 2) Rubber covered hand grip 3) 6-axis gyroscope: supports Swtich native body sensing + PC simulated body sensing 4) 4 additional defined keys 5) Hall trigger, 2-speed trigger limit lock 6) ALPS rocker + steel ring anti-friction ring 7) Audio support: receiver 2.4G wireless audio 20ms low latency, support PC, switch 8) Built-in 1000mAh polymer lithium battery 9) Continuous fire, key change, macro 10) Mobile phone APP real-time tuning reference 12) Support Switch host one button awake 13ï¼?Can be purchased separately with the magnetic charging base 14) 2.4G receiver can be purchased separately: support wireless audio and multi-platform guide function
