Hysteresis
See Also: Hysteresis Loop, Hysteresis Graphs, Hysteresis Curve, Magnetic Permeability
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Signal Generator
8002
25C, hysteresis eliminated. To within 10 MHz of the final frequency. Normal switching mode, SSB phase noise will be degraded in the fast switching mode.
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Vibrating Sample Magnetometer
VSM
The VSM (also named M-H CURVE Hysteresis Graph TEST SYSTEM ) can be used for the measurement of the basic magnetic properties of the magnetic materials. Such as the Hysteresis loops of the materials, Magnetization curve, Warming Curve , Warming /Cooling curve, Cooling curve and the changes of the temperature as time goes away , then we will get some Magnetic parameters such as the Saturated strength of the magnetization, the left strength of the magnetization , Coercive force, the Max of Magnetic energy product,the Curie temperature and the Magnetic conductivity(the Initial Magnetic conductivity is included ). It can also measure the magnetic materials such as the powder, the particles, the films, the liquid and the massive.
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AC Hysteresis Graph Test System
DX-2012M
Automatic measurement of the dynamic magnetic hysteresis loop of oriented and non-oriented silicon steel under the condition of 50 Hz, 60 Hz, 400 Hz and 1 kHz, accurate measurement of the static magnetic characteristic parameters such as amplitude permeability μa, loss angle δ, specific total loss Ps, remanence Br and coercivity Hc. With special testing fixture, it can directly measure the iron core and stator core of the transformer.
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Electromagnets
The Lake Shore electromagnets (EM-V Series) produce magnetic fields with a variety of indexed air gap and pole cap configurations. The EM-V Series is ideally suited for integration into customer-designed magnetic test platforms for applications including magneto-optical studies, magnetic hysteresis studies, in-line annealing, Hall effect studies, susceptibility measurements, spin magnetic resonance demonstrations, and biological studies.
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High-Dynamics PIMag Linear Stage
V-522 • V-524 • V-528
Physik Instrumente GmbH & Co. KG
Reference-class linear stage. Linear positioning stages with magnetic direct drives largely dispense with mechanical components in the drivetrain and the drive force acts directly on the motion platform. Together with precision bearings, a high travel accuracy and longer lifetime is achieved. The linear positioning stages are particularly suitable for scanning applications. PIMag® Voice Coil. Voice coil drives consist of 2 essential components: A permanent magnet and a coil, which is located in the air gap of the magnetic field. When current flows through the coil, it moves in the magnetic field of the permanent magnet. The direction of motion depends on the polarity. Thanks to their low weight and friction-free drive principle, voice coil drives are particularly suitable for applications, which require high dynamics and high velocities at limited travel ranges. High scan frequencies and precision positioning are also possible with these drives, because they are free of the effects of hysteresis.
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DC Hysteresis Graph Test System
DX-2012H
Automatic measurement of the demagnetization curve of permanent magnetic material such as ferrite, AlNiCo, NdFeB, SmCo, etc. Accurate measurement of the magnetic characteristic parameters of remanence Br, coercive force HcB, intrinsic coercive force HcJ and maximum magnetic energy product (BH)max.
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Power Amplifier
5241
The Model 5241 is a voltage-controlled power amplifier designed exclusively for Magtrol's Model HD-825 Hysteresis Dynamometer. Because of its double braking system, the HD-825 requires more than 4 amps of power in order to reach full torque. The 5241 (which can provide up to 5 amps of output current) is necessary in order to amplify the power between a 6200 or DSP6001 Controller (which both have a maximum current output of 1 amp) and the HD-825 Dynamometer.
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Hysteresis Dynamometers
HD Series
16 Standard Models with Maximum Torque from 2.5 ozin to 500 lbin (18 mNm to 56.5 Nm)Hysteresis Braking System: Provides precise torque loading independent of shaft speedMotor Testing from No Load to Locked RotorAccuracy: 0.25% to 0.5% (Full Scale)Air Flow Sensor: For protection against overheating and operator errorStandard Torque Units: English, Metric and SIBase Plate: Available in long or short versionsCustom Dynamometers: for special torque and speed requirementsEasy Calibration
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Stress Hysteresis in vacuum or gas up to 900C
900 Series
Stress Hysteresis in vacuum or gas up to 900C for the study of annealing cycles.Thermal Desorption, Film Shrinkage, Reflectivity, and Resistivity options provide additional insight to causes of material changes with temperature.
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Powder Brake Dynamometers
PB Series
The Powder Brake Dynamometer (PB Series) contains, as its name suggests, a magnetic powder. The electrical current passing through the coil generates a magnetic field, which changes the property of the powder, thus producing a smooth braking torque through friction. They are ideal for applications operating in the low to middle speed range or when operating in the middle to high torque range. Like Hysteresis Brakes, Powder Brakes provide full torque at zero speed. Like the Eddy-Current Brake Dynamometers, the PB series are water-cooled, allowing for power ratings up to 48 kW. The PB Dynamometers have accuracy ratings of 0.3% to 0.5% full scale ( 2% for PB 2.7), depending on size and system configuration. Additional mounting possibilities include speed pickup and OEM version IS.
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Open Optical Encoders
An optical encoder is an electromechanical device which produces an electrical signal output proportional to the linear displacement of a linear guide or the angular position of an input shaft.Open encoders are exposed and feature no external integrated enclosure. The advantages of open optical encoders include the effective elimination of backlash, shaft wind-up (torsion) and other mechanical hysteresis errors.A rotary open optical encoder consists of a position measurement readhead and an accurate rotary scale marked either on the periphery of a ring or on the face of a disc.The readhead measures position by optically sensing the regularly-spaced scale markings and outputs this information as an analogue or digital signal.The signal is subsequently converted into a position reading by a digital readout (DRO) or motion controller.
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Transformer Degaussing Analyzer
KRI6691
The KRI6691 transformer degaussing analyzer injects current into the test winding by applying ±90V voltage, and collects the terminal voltage and winding current to draw the hysteresis characteristic curve. Linear quantitative analysis of transformer remanence can be performed, and rapid demagnetization can be achieved by tracking the hysteresis curve.
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Arbitrary Function Generator
HMF2525/HMF2550
Powerful pulse generator Provides pulses with a recurrence rate of up to 12.5 MHz/25 MHz; the pulse width can be set from 15 ns to 999 s with a resolution of 5 ns. Rise/fall time can be selected from 8 ns to 500 ns – a very useful feature when characterizing input hysteresis of semiconductor devices Easily create arbitrary waveforms Arbitrary waveforms can be developed with PC software. Stored waveforms can be loaded via front USB port or imported via the complimentary HMExplorer software (available for download)
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AC Hysteresis Graph Test System
DX-2012SA
Under continuous frequency of 1 kHz to 500 kHz, automatic measurement of magnetic hysteresis loop of the soft magnetic materials such as silicon steel, precision alloy, non-crystal and ferrite, accurate measurement on the dynamic magnetic characteristic parameters such as amplitude permeability µa, loss angle d, loss iron Pc, remanence Br and coercivity Hc.
