Hysteresis
See Also: Hysteresis Loop, Hysteresis Graphs, Hysteresis Curve, Magnetic Permeability
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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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Materials Test System
ModuLab XM MTS
I-V (voltage scans with current measurement - used to characterize electronic and dielectric materials)P-E (polarization / electric field - used to run hysteresis tests to characterize ferroelectric materials) High-speed pulse (used to activate charge carriers in electronic and dielectric materials)Staircase and smooth stepless analog ramp waveformsImpedance, admittance, permittivity / capacitance, electrical modulusC-V capacitance - voltage, Mott-SchottkyAutomatic sequencing of time domain and impedance/capacitance measurements
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Soft Iron Tester
WP2
Computer aided measuring set for automatic measurement of the hysteresis loop of soft magnetic materials. Allows measurement of workpieces with different length and cross sections.
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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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Ferroelectric Test System
LCII
Precision LC II is an affordable Ferroelectric Tester for research labs. This system offers 5Khz at 9.9V and also comes in a built in 10V, 30V, 100V, and 200V option. This unit can also be expanded to 10kV for bulk ceramic testing. Vision Software is provided with the LCII Test System. Vision uniquely allows the user to construct complex or simple programs with any number of tests to characterize all aspects of the sample in one execution while keeping track of the measurement results and the history of the sample being tested. Tasks such as Hysteresis, I/V, C/V, PUND, Waveform, Magnetoelectrics, Piezoelectrics are just a few features to choose from.
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Automatic Hysteresis Graph Test System
DX-4DMT
X-4DMT automatic hysteresigraph system accords with the standard permanent magnet test system, GB3217-92, used to measure the major and minor hysteresis loops, demagnetization curves, recoil hysteresis loops and initial magnetization curves in different temperature of ferrite, AlNiCo, SmCo, NdFeB and quenched material, and gives the magnetic parameter, Br, Hcb, Hcj, (BH)max, Hk and so on, and could meet different requirements on test function, precision, power capability, reliability, efficiency, price, local environment from laboratory to enterprise's production line.
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High Precision Canister Load Cell
Model 2000 Series
The Model 2000 Series High Precision Canister Load Cell was designed to accurately and precisely measure force, which many other quantities such as torque, thrust, and pressure are based, for aerospace applications. The Model 2000 Series, available with load measurement capacities up to 750K lbf, offers high performance and linearity and very low hysteresis. ±0.02% FS Hysteresis
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HyMAC Magnetic Properties Tester
Metis Instruments & Equipment NV
The HyMAC Magnetic Properties Tester is a versatile instrument for determining the AC magnetic properties of soft magnetic steel sheets and ferrite cores. The basic functionality of the instrument is that of a hysteresis graph: the measurement of the B-H hysteresis curves.
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Hysteresis Loop Tracer
MESA
The MESA is the only hysteresis loop tracer on the market that can make measurements in the frequency range of 10 Hz and below. Competing units operate with more-easily generated 60 Hz drive fields, and can have errors of as much as 30% in coercivity (Hc) measurements.
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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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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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Transformer Performance Tester
6691
applying ±90V voltage on the winding of the transformer demagnetized and get the voltage value on the terminal and the current value in the winding to draw the hysteresis characteristic curve. This method can be used for linear quantitative analysis of residual magnetism in transformers, and fast demagnetization can be achieved by tracking hysteresis curves. The analyzer can measure magnetism residual rate before and after demagnetization.
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High-Speed Optical Delay Line
The Peregrine Optical Delay Line (1-cm, 60 ps delay) and the Gyrfalcon Optical Delay Line (2-cm, 120 ps) are high-speed, high precision, voice coil motor optical delay lines. They have zero-backlash and no hysteresis. Both have similar form factors that are compatible with 30-mm cage components and 1.035” – 40 threads. Both include full digital and analog control and include a USB interface.
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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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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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Optical Delay
ODL
The Peregrine Optical Delay Line (ODL) provides an exceptional combination of precision, speed, and optical stability at a low price. It is ideally suited for pump-probe experiments and autocorrelation measurements (both interferometric and intensity methods). Advanced voice coil technology allows the ODL to be positioned anywhere in its travel range to within 150 nm. That’s 1 fs for a double-pass configuration. The response time is as short as 1 ms. Our 1-cm-travel ODL is interferometrically stable (measured using a 650 nm laser). No backlash, no hysteresis and no drive trains to wear out as with stepper motors. It’s convenient–the ODL can be positioned using digital commands, an analog voltage or a combination of the two. Two 16-bit on-board analog-to-digital converters simplify data collection. Digital inputs and outputs allow master or slave clocking. An executable Windows application is provided to get you up and running in minutes. In addition, DLLs and LabVIEW Vis for integration into your software are also included.
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Digital Input/Output Card
IOD-144
This is a 144-bit full-size card. A Programmable Peripheral Interface chip, type 8255-5 provides three 8-bit ports (A, B, and C) for each 24-bit group. Each port can be independently programmed for either input or output. Port C can also be configured as two 4-bit ports. These cards fully implement Mode 0 of the 8255 PPI chip. (Consult the factory if you desire to operate in Mode 1.) Type LS245 bi-directional transceivers sink 24 mA (optionally 64 mA) and source 15 mA. These transceiver buffers provide hysteresis correction on inputs and added drive capability on outputs. The direction of the transceivers is set by software.
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HandyScope HS4 DIFF: 50 MS/s 100MHz BW, 4 Channel, USB Differential Digital Storage Oscilloscope, Spectrum Analyzer, Voltmeter, Transient Recorder
HS4-50-DIFF
* record length is 131060 samples * 128K samples on screen without loss of information * free settable pre trigger position, from 0 to 100% * easy time axis zoom using unique scaleable sroll bar slider * free adjustable sample frequency * vertical offset and gain adjustable with graphical shiftable and scaleable axis * WYSIWYG trigger level, slope and hysteresis adjustment using combined trigger control * Auto setup to reduce setting time with unknown signals * linear/quadratical interpolation * extended cursor measurements * all settings accessable through popup menus * storing and recalling reference signals * software math channel available * easy to use speedbutton toolbar for easy access of all functions * comment tags to mark specific events in the signal * color hardcopy supported * explanatory comments with all controls * envelope mode * averaging of signals
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Pressure Switches
NOSHOK offers a wide selection of mechanical and electronic pressure switches, including low pressure, compact switches with 1 SPST N.O. or N.C contact, as well as RoHS compliant SPDT pressure switches with adjustable hysteresis. These switches are ideal for use in hydraulic systems including mobile hydraulics, as well as pneumatic systems, power generation, industrial machinery or machine tools, pumps & compressors and more.
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Hall Effect Sensor Elements/ICs
ChenYang Technologies GmbH & Co. KG
is a sophisticated Hall Effect Gear Tooth IC featuring an on-chip 12-bit A/DConverter and logic that acts as a digital sample and hold circuit. A separate 6-bit D/A converterprovides a fixed hysteresis. The sensor does not have a chopper delay. It uses a single Hall platewhich is immune to rotary alignment problems.
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Dial Weight Dynamometers
The most important characteristic of any measurement instrument is repeatability and accuracy. The Magtrol Dial Weight Dynamometer uses the combination of a Hysteresis Brake and gravity to insure constant, reliable results. The brake torque rise is directly proportional to applied current
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Ferroelectric Test System
RT66B
Radiant's Rt66B offers amazing performance at an affordable price. The Rt66B is a perfect entry level system for measuring Ferroelectrics. This system does include Radiant's famous Vision Data Management System which offers all the standard measurements of ferroelectrics including Hysteresis, Fatigue, Waveform, C/V, I/V, PUND and much more.
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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.
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Hysteresis Graph
MAGNET-PHYSIK Dr. Steingroever GmbH
The measurement of magnetic material parameters using hysteresis graphs is of utmost importance for both material manufacturers and users. Discover the hysteregraphs from MAGNET-PHYSIK in Cologne.
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X Band Coupler With Dual Output Threshold Detector
The X Band coupler with dual output has an input power range of either -5 to +10 dBm, or +5 to +20 dBm. Covering 8.0 to 9.5 GHz, insertion loss is less than 1.0 dB and VSWR is 1.5:1. The coupler/detector has two external resistors providing independently settable threshold TTL outputs. The power flatness is ~0.4 dB and hysteresis is 0.1 dB. Cougar can provide this function in other frequency ranges and input power ranges.
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Ferroelectric Tester
Premier II
The Precision Premier II, is one of Radiant's most advanced test systems. The Premier II has the large envelope in terms of frequency response, voltage range, and accuracy of any ferroelectric tester in the world. Vision Software is provided with the Premier II Test System. Vision uniquely allows the user to construct complex or simple programs with any number of tests to characterize all aspects of the sample in one execution while keeping track of the measurement results and the history of the sample being tested. Tasks such as Hysteresis, I/V, C/V, PUND, Waveform, Magnetoelectrics, Piezoelectrics are just a few features to choice from.
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Adaptive Inverse for Actuator Compensation Toolbox
AIFAC
Actuator nonlinearities such as dead-zone, backlash, and hysteresis are ubiquitous in mechanical connections, hydraulic servo-valves, electric servomotors, piezoelectric, pneumatic and magnetic actuators, and even appear in biomedical systems. The Adaptive Inverse For Actuator Compensation (AIFAC) Toolbox for Simulnk allows control system engineers to design high-performance adaptive controllers to compensate for uncertain or undesirable actuator dynamics that would otherwise adversely affect closed-loop control system performance.
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PXI/PXIe LVDT, RVDT, Resolver Simulator Modules
Linear variable differential transformers (LVDT) are electrical transformer sensors to measure linear displacement. Driven by an AC excitation source, the LVDT generates a pair of AC output signals modulated according to the core's mechanical position (displacement). LVDTs have been widely used in applications such as power turbines, hydraulics, automation, aircraft, satellites, nuclear reactors, and many others. These transducers have low hysteresis and excellent repeatability.
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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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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.
