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North America Wave Spectrum Science and Trade Inc.
MorganVille, NJ, United States
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Data Logger

  • Min. Order (MOQ) 1 Set(s)
We are offering data logger. 1. Overview
in practical engineering tests, be able to use portable data acquisition recorder is very convenient. This product is mainly designed for power plants on-site vibration monitoring, vehicle vibration monitoring, machinery and equipment on-site testing, vibration testing tunnels, bridges and cable testing, high-altitude or mine vibration detection. This instrument does not need a computer. It can be used independently without computer. There are rechargeable battery inside.
the instruments designed with ultra-low-power components and work for long time with inside battery.
this product is widely used in electric power, metallurgy, petrochemical, chemical and other industrial environments.

with built-in large capacity memory, it can record data for a long time. Built-in software has following function: manual data acquisition, trigger data acquisition, timing of data acquisition, data file management, and communication with host computer (with net interface).


2. Main features and technical specifications
type naws-5926
1) continuous data acquisition
2) manual or trigger data acquisition
3) oscilloscope display
4) acquisition waveform display
5) computer communication
6) format conversion (for matlab, excel, ascii)
7) a/d channels 8 (voltage input)
8) icp input channels 8 (optional)
9) a/d resolution 16 bits
10) input range 10volt
11) the maximum sampling frequency 50khz
12) memory (cf card) 1gb
13) black and white screen with resolution 320x200 pixels
14) battery working hours 5 7
15) external power supply dc12v
16) dimensions 29.0x19.0x7.5cm (11.42x7.48x2.95")
17) interface lan rj45 ethernet port
18) case material abs plastic and aluminum alloy inside
19) weight 2.5kg (5.51 lb)
20) environment: -20 to 60c (-4 to 140f).
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Two Channels Charge Conditioning Amplifier

  • Min. Order (MOQ) 1 Set(s)
We are offering two channels charge conditioning amplifier. 1. Overview
charge amplifier type naws-2401 is a four functions amplifier consisting of charge amplifier, voltage amplifier, low-pass filter and integrator. It is a comprehensively equipped charge conditioning amplifier. It can be powered from external batt eries dc or ac power supply, making it useful both experiment in the field test and in the laboratory.

2. Main features
anti-alias low-pass filter
small size, light weight, stable and reliable
3 digit conditioning to transducer sensitivity
switchable for charge and voltage input mode
piezoelectric transducers, velocity and displacement ensors can be connect to the amplifier
built-in integrators for velocity and displacement
power supply is ac or dc

3. Technical specifications
type: naws-2401/2
input channel: 2
sensitivity conditioning: 3 digital dial-in of sensitivity
input range:
0.1pc to 50000pc for charge
0.1vp to 5vp for voltage
input connector: 10-32nf for charge input
female bnc for voltage input
output connector: female bnc
input mode: switchable with charge or voltage input mode
frequency range:
0.16hz to 20khz for charge
dc to 20khz for voltage(through)
1hz to 20khz for voltage(blocking)
integration: one time integrate acceleration to velocity or velocity to displacement
two time integrate acceleration to displacement
low-pass filter: switchable with 10, 20, 50, 100, 200, 500, 1k, 2k, 5k, 10, 20khz. It is attenuation slope of -120db/oct
gain:
0.001, 0.01, 0.1, 1.0, 10 for charge input
1, 10, 102, 103, 104 for voltage input
temperature range : -20c to 60c (-4f to 140f)
humidity: 0 to 85%rh (non-condensing).
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Usb Data Acquisition Instrument

  • Min. Order (MOQ) 1 Set(s)
We are offering usb data acquisition instrument. 1. Overview
naws-5921/u series usb data acquisition instrument uses usb interface to communicate to a computer. The acquisition speed is close to the same level as the a/d card inside the computer. The product also uses automatic channel scanning technology and fifo buffer memory, thus enabling its automated data block collection capability and its extremely high data transmission efficiency. Real-time data can be successfully processed due to its advanced features of continuous and rapid acquisition and archiving. The products are suitable for field and laboratory tests.

2. Main features
usb interface supports plug and play mode
it is computer's external device which is easily to use
data acquisition software included

3. Technical specifications
total sample rate: 100ks/s, 200ks/s, 500ks/s
resolution: 16bits
input type: unipolar - single ended
number of channel: 16 or 32
input analogue range: 10v
programmable gain: 1, 2, 4, 8, 16
input connector: female bnc connector
fifo buffer: 32kb
timer counter: 8254
interface: usb1.1 and usb2.0 compatible
power supply:
1) directly supply by usb interface for no synchronization acquisition
2) dc12v or ac110 to 220v for synchronization acquisition
weight: 2600g (5.73 lb)
dimension (excluding handle): 320x205x90mm (13.00x8.07x3.54")
environmental: -20 to 50c (-4 to 122f)
accessories: 1 usb cable, 1 power cable, 1 suitcase
suport software: naws-daq.
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Lan Data Acquisition Instrument

  • Min. Order (MOQ) 1 Set(s)
We are offering lan data acquisition instrument.
naws-5920 series lan data acquisition instrument is specification product using computer's network interface. Acquisition speed close to the same level with the a/d card inside computer. The products also use the automatic channel scanning technology and fifo buffer memory. Which has the ability to automatically collect data block and high data transmission efficiency. Real-time data can be successfully and rapidly acquisited. The products are suitable for field and laboratory tests.

2. Main features
network interface supports plug and play mode
network cable length is up to 100m
optical cable is able to use
it is computer's external device which is easily to use
data acquisition software included

3. Technical specifications
total sample rate: 100ks/s, 200ks/s
resolution: 16bits
input type: unipolar - single ended
number of channel: 16 or 32
input analogue range: 10v
programmable gain: 1, 2, 4, 8, 16
input connector: female bnc connector
fifo buffer: 32kb
timer counter: 8254
interface: network with tcp/ip protocol
power supply: 12v or ac110 to 220v for synchronization acquisition
weight: 2600g (5.73 lb)
dimension (handle isn't included): 320x205x90mm (13.00x8.07x3.54")
environmental: -20 to 50c (-4 to 122f)
accessories: 1 lan cable, 1 power cable, 1 suitcase
suport software: naws-daq.
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Vibration Comprehensive Experimental Teaching System

  • Min. Order (MOQ) 1 Set(s)
We are offering vibration comprehensive experimental teaching system.
"vibration comprehensive experimental teaching system" is designed for colleges and universities. The system is for the mechanics discipline, civil engineering structures and mechanical disciplines. Combined with institutions of higher learning teaching theory courses, the full set of test methods may provide students with laboratory equipment to enable students to learn through visual experiments to deepen their theory. The system is an essential teaching experimental device.

configuration of the data acquisition instrument, amplifiers, sensors and software can be used for scientific research and experiment.

the configuration of the system
simply supported beam and cantilever beam
disc
motor and speed adjuster
oil damper
single and double absorber
active isolator
passive isolator
contact exciter
non-contact exciter
uniform strength beam with 4 counter weight
impact hammer with force sensor
accelerometer
two or three degree of freedom string and 2 counter weight
teaching instrument with charge amplifier, strain gauge, data acquisition, programmable signal source and power amplifier.
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Earthquake Shaking Table

We are offering earthquake shaking table.
There are three types of earthquake shaking tables: hydraulic type, mechanical type, and electromagnetic type. An earthquake shaking table is an indispensable device in structural earthquake resistance, natural frequency measurement, vibration analysis. The cost of a shaking table depends on its size, performance, and the corresponding supporting equipments. Generally it costs several hundred thousand to over a million dollars to build one shaking table and the maintenance costs are high. Therefore, it may be too costly for many institutions and new institutions of science and engineering to buy such equipment. Even they could afford and purchase such equipment, it would still be difficult and unsuitable for it to be used for general teaching purposes. The "naws-z30 earthquake shaking table system" produced by our company is specially designed for institutions of science and engineering. It has nearly the same features and exactly the same content of experiment of a large vibration table but with much lower costs. It is very suitable for teaching. It enables students to study through experiments, to understand and master the methods needed in vibration experiments, thus laying the foundation of their future involvement for the construction of medium or large vibration tables.

in addition to teaching, this system can also be used for the vibration assessment test of small devices, such as, precision electronic equipments, handheld devices, computer hard drives, sensors, mems sensors and other equipments. Another usage of the system is the calibration of sensitivity and frequency response curves of other sensors as long as a standard accelerometer (such as b&k's accelerometer for calibration) is available. Sensor calibration is necessary for engineering test, field test, vibration monitoring, etc.

the configuration of the system
horizontal and vertical table
exciter
power amplifier
control instrument
charge amplifier with two channels
icp acceleration sensor amplifier with eight channels
1 piezoelectric accelerometer
6 icp accelerometers
standard industrial cabinet
6 stories frame structure model
teaching software with modal shapes animation
computer
contents of experiment
(1) earthquake simulation; generation and application of an artificial earthquake wave; calculation of the accelerating response spectrum of earthquake time history
(2) test of structural modal shape by the excitation of white noise
(3) beat wave simulation
(4) sine wave simulation
(5) random waves simulation.
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Displacement Sensor Calibrator

  • Min. Order (MOQ) 1 Set(s)
We are offering displacement sensor calibrator. 1. Overview
naws-disp1 type displacement calibrator is designed for the calibration of displacement sensors. It can be used for the calibration of eddy current sensor, inductive sensor, lvdt displacement sensor and cable extension displacement sensor, eddy sensor, etc. The gap between sensor and calibration disk can be adjusted by rotating the dial gauge's handle. Displacement sensor can be calibrated by measuring displacement sensor's output signal (voltage or current) and its corresponding displacement from its dial gauge.

2. Technical specifications
type ws-disp1
displacement range: 20mm
dial gauge resolution: 0.001mm (digital)
dial gauge producer: germany
disk size: 60mm, 30mm, thick 4
disk material: 45# steel (black color)
desk material: ly12 aluminum
dimension (mm): 318x110x83 (12.52x4.33x3.27")
5 sensor sockets with screw threads: m12x1, m14x1, m16x1, m18x1, m20x1.
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Accelerometer Calibration System

  • Min. Order (MOQ) 1 Set(s)
We are offering accelerometer calibration system. 1. Overview
a sensor's frequency response and sensitivity is a very important technical indicator for a its designing and its vibration signal measurement. The system is designed for the calibration of the accelerometer's frequency response curve and sensitivity. The calibrating procedure is automatically controlled by a computer. The system is used to measure the frequency and amplitude of a standard reference accelerometer and the sensor to be calibrated. The sensor's frequency response curve and sensitivity is thus calibrated by comparison of the different measurements (the so-called back-to-back method).
the system can be used in research institutes, laboratories of vibration research, and for the design and production of sensors.

the system can also calibrate the sensitivity and frequency response curve of velocity sensors. Velocity sensors are widely used in petroleum exploration, machinery vibration monitoring in factories, etc.

2. Component
naws-5926c control instrument
naws-2401 two channel charge amplifier
jz-2a exciter
gf-20 power amplifier
bk 8305 standard reference accelerometer(optional)
computer (optional)
vib'sin software

3. Functions
sine wave sweep according to user-defined spectral line and amplitude
sine wave sweep according to equal interval spectral line and amplitude
draw frequency response curve in linear or logarithmic coordinates

4. Techincal specification
4.1 control instrument
model: naws-5926c
1) led display of d/a output voltage amplitude
2) usb computer interface. It is compatible with usb1.1 and usb2.0
3) sweep frequency range from 0.1hz to 50khz
4) d/a analogue output amplitude is 10v
5) frequency accuracy is 0.01hz
6) amplitude accuracy is 0.2%fs
7) 1 d/a channel
8) maximum sample frequency is 500ks/s
9) power supply is from ac110v to ac220v
10) size is 33x27x6cm
4.2 exciter
model: jz-2a
1) frequency range: 60hz to 30khz
2) maximum current: 2.5a
3) maximum load: 110g
4.3 power amplifier for exciter
model: gf-20
1) maximum power: 20va
2) maximum current: 2a
3) maximum output voltag: 10v
4) frequency rang: 10hz to 40khz
5) output resistance: 6 ohm
6) distortion:
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Pure Bending Beam Experiment Bench

  • Min. Order (MOQ) 1 Set(s)
We are offering pure bending beam experiment bench.
in bridges, building structures and other engineering projects, pure bending deformation is very common. In this experiment, strain and deflection is measured to analyze the basic properties of structures and materials. If the equipment is slightly modified, you can perform the experiment of bar stability, concentric tension and compression, eccentric tension and compression and so on. The experiment enables students to learn the dialectical relationship between theory and practice, but also enhances their practical abilities.

system composition and principle
this product is designed with enclosed steel frame and cast composition with careful surface treatment. It is a durable fastening structure. For each type of experiment, the product equips with specimens and surface treatment samples and accessories. The system consists of base, pure bending beam, sensor, strain instrument, strain gage, wires and so on. The strain instrument can connect to a computer and the data can be processed with our software.
the basic principle of this strain-stress electrical measurement method: measuring a specimen's surface strain with strain gage, then the specimen's surface stress state is determined according to the strain-stress relationship. The strain-stress electrical measurement method is not only used to validate the basic theory of mechanics of materials, to measure the mechanical properties of materials, but also is a major engineering testing means for solving engineering problems. It provides a good experimental basis for scientific research.

contents of experiment (1)
normal stress regularity of distribution in cross sections of pure bending beams
(2) strain gage sensitivity coefficient calibration
(3) elastic modulus and poisson's ratio determination
(4) eccentric tension
(5) bar stability

specifications
experiment bench
dimension: 700x450x1015mm (27.56x17.72x39.96")
loading speed: 0.12mm/r
maximum loading displacement: 50mm (1.97")
overload capacity: 150%
weight: 45kg (99.27 lb)
pure bending beam
dimension: 700x20x40mm (27.56x0.79x1.58")
maximum loading: 5000n
elastic modulus: e=190210gpa
calibration beams
dimension: 700x15x40mm (27.56x0.59x1.58")
maximum loading:1500n
elastic modulus: e=190210gpa
poisson's ratio: 0.260.33
three-point deflectometer, dial indicator
dial indicator
measuring range: 010mm
resolution: 0.01mm
tensile specimen
dimension: 220x30x5mm (8.66x1.18x1.97")
maximum loading: 1500n
elastic modulus: e=190210gpa
poisson's ratio: =0.260.33
meterial: steel
force sensor
model: kmc-3c/1000
measuring range: 1000kg (2206 lb)
rated output: 2.30.025mv/v
nonlinearity: 0.03%fs
input resistance: 38510 ohm
output resistance: 35010 ohm
excitation voltage: 10vdc
temperature range: -20c to +60c(-4f to 140f)
materials: alloy steel, stainless steel.
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Multifunctional Experimental Equipment

  • Min. Order (MOQ) 1 Set(s)
We are offering multifunctional experimental equipment.
this product is mainly used for experiments for mechanics of materials in engineering colleges. You can do a variety of experiments on mechanics of materials on this device, with only slight changes of the device for each experiment.

load is provided by a spiral worm gear. Measurement is performed on load with a force sensor and on strain with a strain gage. The test bench's structure is compact, load can be steadily provided, and it is simple for student to operate. It can produce high quality experimental results with this device. Other tests can be added to the device as needed. The strain instrument inside the device can connect to a computer where data acquisition and processing can be performed.

this product is designed with enclosed steel frame and cast composition with careful surface treatment. It is a durable fastening structure. For each type of experiment, the product equips with specimens and surface treatment samples and accessories.

system composition and principle
the system is composed of base, pure bending specimens, sensors, strain instrument, strain gage, wires and so on. The strain instrument can connect to a computer where data can be processed. Through the electrical test method, a few basic parameters in mechanics of materials can be measured and analyzed, and the results can be compared with the theoretical values.

the basic principle of this strain-stress electrical measurement method: measuring a specimen's surface strain with strain gage, then the specimen's surface stress state is determined according to the strain-stress relationship. The strain-stress electrical measurement method is not only used to validate the basic theory of mechanics of materials, to measure the mechanical properties of materials, but also is a major engineering testing means for solving engineering problems. It provides a good experimental basis for scientific research.

contents of experiment (1) normal stress regularity of distribution on cross sections of pure bending beams

(2) strain gage sensitivity coefficient calibration
(3) elastic modulus and poisson's ratio determination
(4) eccentric tension
(5) bar stability
(6) determination of the size and the direction of the principal stress
(7) measurement of bending moment and torque separately under the combined action of the bending and torsion
(8) equal strength tests on variable cross-sections
(9) bending normal stress test on equal strength beams

specifications
experimental device
dimension: 700x475x1080mm (27.56x18.70x42.52")
maximum loading: 8kn
maximum loading displacement: 30mm (1.18")
loading speed: 0.12mm/r
the handwheel load torque: 02.5n.m
weight: 70kg
pure bending beam
dimension: 700x20x40mm (27.56x0.79x1.58")
maximum loading: 4kn
elastic modulus: e=190210gpa
poisson's ratio: =0.260.33
calibration beams
dimension: 700x15x25mm (27.56x0.59x0.98")
maximum loading: 4kn
elastic modulus: e=190210gpa
poisson's ratio: =0.260.33
three-point deflectometer
dial indicator
measuring range: 010mm
resolution: 0.01mm
support span: 200mm

seamless steel pipe (hollow shaft)
outside diameter: 40mm (1.58")
inside diameter: 32mm (1.26")
length: 345mm (13.58")
length of the sector arm: 240mm (9.45")
elastic modulus: e=190210gpa
poisson's ratio: =0.260.33
preload: >100n
maximum loading:
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Impact Hammer

  • Min. Order (MOQ) 1 Set(s)
We are offering impact hammer. 1. Overview
hammer is a major tool for modern structural dynamics test. Impact hammer method is used to measure structural modal shape and natural frequency. Hammer is widely used in scientific research in universities, institutions, and for the design of industrial equipments. The impact hammer has contributed to the rapid spread of transient test.
Impact hammer is a fast, simple, and effective method to calculate structural modal parameters. It utilizes the force sensors installed in it to strike on structures being tested. With current testing techniques and fast fourier transform (fft) done on a computer, the pulse signal collected by the sensors is processed very rapidly based on pulse test principle and modal theory to calculate structural modal parameters. In the hammer method test, the input is the incentive (hammer) force signal on the structure. By measuring the response (output) acceleration signal at various points of the structure, the transfer function of the structure can be obtained and thus the vibration characteristics of modal shape and natural frequency of the structure can be calculated.

2. Specifications

model: lc-5

force sensor specification:
measuring range: 5kn
charge sensitivity: 4.0pc/n
linearity:
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Multi Function Rotary Experiment

We are offering multi function rotary experiment
the experiment bench is mainly used for teaching demonstration and experiments for students. It is designed for the mechanics discipline of colleges and universities. The device is characterized as compact in structure, small in size, convenient for operation, and it can be used for various experiments of rotating machinery with its large number of demonstration items and advanced testing means.

contents of experiment (1) base vibration and shaft vibration and phase changes when rotor rotates at critical rotational speed
(2) critical speed measurement of rotating shaft
(3) the influence of different rotor structure model on critical speed of rotor
(4) measuring the vibration modal of flexible rotors
(5) oil whirl and whip of sliding oil-bearing
(6) radial vibration and axis displacement (simulation) of non-contact testing shaft (lisajours figure)
(7) dynamic balance
(8) bode figure
(9) three dimensional analysis of real-time waterfall diagram of a rotor.
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  • Lyons (North America Wave Spectrum Science and Trade Inc.)
  • Wedge Road, MorganVille, NJ, United States
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