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Helmholtz Coils
generate precise magnetic fields within and between it's coils.
See Also: Coil, Coil Turns, Rogowski, Magnetic Field
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Helmholtz and Search Coils
Standard field Helmholtz coils, magnet moment measurement Helmholtz coils, and search coils.
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MEMS Magnetic Sensor Test
Cohu offers a big variety of magnetic test solutions applying magnetic field in all three dimensions. Depending on the requirements we can integrate coils with and without magnetic core, single- or Helmholtz coils, as well as permanent magnets, static and rotating.
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Power Supply
High precision analog control loop power supplies for inductive loads such as electromagnets, superconducting coils, Helmholtz coils and others.Autonomous analog power supplies with digital controls, readouts and supervision. The interfaces are digital and analog
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Moment Measuring Coils (Helmholtz)
measurement of the magnetic moment of magnetized parts and for generation of homogeneous magnet fields with easy access. Inner diameters from 20 - 1040 mm. X-Y and X-Y-Z coils are also available. Typical serial coils are the following types: MS 20, MS 75, MS 150, MS 210, MS 440.
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Helmholtz Coils
Helmholtz-Coils are especially designed to generate precisely defined magnetic fields from DC to the upper end of the audio frequency range and beyond. The generated fields are in a strongly linear relation to the coil current. The field- strength can be calculated exactly by analytical (or numerical) methods, based on the coils' geometry, the number of turns and the coil current.
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Standard Helmholtz Coils
Helmholtz Coils are ideal for the measurement of Rare Earth (Samarium Cobalt, Neodymium) and Hard Ferrite permanent magnet materials (materials which exhibit a relative straight line demagnetization). Our standard Helmholtz Coils are for use with fluxmeters. The Helmholtz Coil measures the magnet sample as a single magnetic moment provided that the longest dimension of the magnet sample is less than one-third (1/3) the diameter of the coil system. By definition, the magnetic moment per unit volume is the intrinsic magnetization of the sample. With our calibrated Helmholtz Coil and Integrated Fluxmeter – and given the volume of the permanent magnet sample – the intrinsic open circuit operating B (Bdi) can be measured.
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Fluxmeter
Measures changes in magnetic flux, as detected through a Helmholtz or similar coil arrangement.
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Three Axis Helmholtz Coil Systems
Macintyre Electronic Design Associa
he MEDA turnkey closed loop magnetic field sources cancel the local ambient field as well as generate accurate and uniform magnetic fields in a control volume. The sources use Helmholtz coils driven by control currents to produce stable magnetic fields from 1 nT to 100,000 nT. The accuracy of the field in the control volume is better than 0.05% of the setting.
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Helmholtz Coil
In the measurement of magnetic fields by means of Hall probes or measuring coils it is necessary to calibrate the instruments in a known magnetic field. Our standard field coil according to Helmholtzenables to production of a magnetic field calculable with high accuracy from the dimensions and the amperage. In series arrangement with an accurate ammeter field strengths of up to 800A/cm are produced. The dield room accessible both in axial and radial direction. Helmholtz coils with fluxmeters are also useful in testing of magnets. Helmholtz coils give repeatable results as against the search coils due to which the magnets can be compared with more accuracy for their total flux and in turn their quality. Field Generating and Field Detecting Helmholtz coils are designed as per user specifications.
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Helmholtz Coils / Radiating Loops
Formed by a pair of conducting circular coils with many turns, each carrying a current. The coils are separated by a distance equal to the radius of the circular loops.
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Helmholtz Coils (Field Standards)
Lake Shore offers four Helmholtz coils for field standards: 2.5 in, 6 in, and 12 in diameter single axis, and the MX-2X-10 double axis coil. Standard field coil (field generation). Field strengths from ˜12 G to ˜30 G. Field accuracy of 0.5%. Field uniformity of 0.5%*. Single axis configuration with 2.5 in, 6 in, and 12 in diameter coils.
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Magnet Testing
Helmholtz Coils
A coil arrangement consisting of two coils with the same radius or edge length is called a Helmholtz coil. At the correct distance, these coils are arranged in parallel on the same axis and current flows through them in the same direction. Their magnetic field is then characterized by a large homogeneous area in the center of the coil, which is freely accessible for experiments and measurement tasks. Helmholtz coils can have a circular or square geometric shape.
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Helmholtz Coils
Helmholtz coils is a candidate test apparatus for low frequency magnetic field susceptibility testing on military equipment and subsystems. Use of this coils reduce electromagnetic compatibility (EMC) qualification tests time, and subject the equipment under test (EUT) to a relatively uniform field.
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RF Helmholtz Coil
The Beehive Electronics 135A RF Helmholtz coil generates a well-controlled, uniform magnetic field. It can be used to calibrate magnetic field probes, such as the Beehive 100 series, or for testing the susceptibility of other devices to magnetic fields. The Helmholtz coil comes supplied with a fixture that makes it easy to calibrate Beehive 100 series probes.
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Precision Helmholtz Coils
A precision Helmholtz coil set is suitable for use with all types of permanent magnets. Constructed out of aluminum and brass with fully shielded coils, the HCP is a hand-operated, sample rotation mechanism with precise 180-degree rotation built in.
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Helmholtz Coils
A Helmholtz coil is actually a pair of specially constructed coils mounted a fixed distance apart on a common base. Current passed through the coils produces an extremely uniform magnetic field in the space between them. For the measurement of magnets, the coils are used in a different manner – they are connected to an integrating fluxmeter, which gives an accurate indication of the overall strength of the magnet when it is withdrawn or rotated a half-turn. If a gaussmeter is used for this purpose, many measurements may have to be made because of local variations of magnetic strength. A Helmholtz coil, on the other hand, measures the entire magnet at once, in a fast, reliable, and easy manner. For this reason, Helmholtz coils are ideal for quality checking of magnet parts after they have been magnetized.
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Fluxmeter
480
The Model 480 is a laboratory grade fluxmeter, for use with a Helmholtz coil or custom search coils. This instrument measures the total flux of a magnet part, which can be related to the magnetic field strength. Applications include magnet testing, magnetizing, and automated field measurement. In order to provide accurate and repeatable measurements, automatic or manual drift compensation is available to the user. A peak mode allows even the fastest magnetic pulse, such as those from a magnetizer, to be accurately measured. The Model 480 is also useful for measuring AC fields that are too high in frequency for a gaussmeter to detect. Relay outputs and an external reset input allow for simple automation functions to be implemented, while the RS232C and IEEE-488 ports permit advanced control of the fluxmeter via a remote computer or automation equipment.
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3D Helmet Coil
With the 3D Helmholtz coil system, 3-dimensional magnetic field vectors can be generated. By superimposition, it is possible to create a field-free space or an artificial earth magnetic field vector inside the coil arrangement. The coil arrangement was developed for the calibration of magnetic field sensors.
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Accessories
Hunan Linkjoin Technology Co., Ltd.
Linkjoin accessories - electromagnet, core test fixture, epstein frame, DC permeameter, AC permeameter, reference magnet, magnetic flux fixture, solenoid, helmholtz coil, temperature controller, etc
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Search Coils And Field Measuring Coils
Designed to measure the magnetic flux on magnets or in the airgap of magnet systems.
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Potential Measuring Coils
measure the magnetic potential of magnets, magnet systems and their surroundings.
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High-Frequency Test Coil
West Coast Custom Designs, LLC
is most commonly used by the neon industry for detecting leaks in a pumping system; the spark generated by the coil via the solid tip, will enter the tube through the leak and become bright white at the point at which it enters.
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Coil Tester
Koyo Electronics Industries co., ltd
The Coil Tester can measure the number of winding, layer short and core material by comparing vibration waveforms of the applied voltage to the standard coil and the test coil. This instrument also can find an insulation failure by applying high pulse voltage and checking the corona discharge.
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Coil Test System
CTS
International Electro-Magnetics, Inc.
The system is controlled by a PC using software written in Visual Basic. It offers visually oriented menus that allow easy coil configuration and test set up procedures.
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Flux Meter and Measuring Coils
MAGNET-PHYSIK Dr. Steingroever GmbH
The measurement of magnetic quantities can almost always be traced back to the measurement of a magnetic flux. The electronic fluxmeter is therefore the most versatile measuring instrument in magnet technology as a measuring instrument for magnetic flux. The fluxmeter is operated together with a measuring coil.
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Rogowski Coil
ARU Series
*Class accuracy 0.5 conductor centered according to IEC 61869-10*Better than 1% accuracy regardless of the primary conductor’s position*Rated insulation voltage 1kV CATIII
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Automotive Ignition Coil Pulser and Tester
Zapper
Automotive Diagnostics and Publishing
The Zapper Automotive Ignition Coil Pulser and Tester is meant to allow you to activate and pulse all kinds of ignition coils on a bench. Test all available coils found on the market today. The Zapper coil testing bed and pulser allows testing of COP or Coil On Plug, DIS, Distributor Coils, Coil Packs and any other coil system. It also allows testing of COP coils with internal driver within the coil. The Zapper is a unique tool and all you'll ever need to test and diagnose ignition and misfire problems.
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T3RC Rogowski Coil Current Probes
T3RC Series
Teledyne Test Tools Rogowski Current probes offer a broad range of products covering a wide frequency span and current measurement ranges for maximum application coverage whilst being easy to use in difficult to reach parts of the circuit.
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Round Wire Coil Inductors
Round wire coil (RWC) inductors come in six platform sizes and enable the highest efficiency of any SMT inductor through the use of a low loss ferrite core material which minimizes AC losses and also eliminates thermal ageing. The use of round magnetic wire instead of rectangular flat coils enables a lower cost while still maintaining a low DCR and small footprint. The platforms have passed the AEC-Q200 stress test qualification proving the designs robustness and suitability to difficult environments but the parts are not IATF certified. The platform range from 7.6×7.4×6.4mm to 26x26x15mm and are suitable for a wide range of applications and markets including communications, computing and industrial.
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Coil Testers & Power Supplies
POB Series
Coil testers and power supply units, models POB30 and POB40 are ideal for commissioning and maintenance testing of circuit breakers. The station supply is not available. The POB series are power supply units implementing the latest power electronics technology. They are developed for use in switchyards, power and industrial environment. In addition to providing current and voltage for breaker testing, they can measure certain coil parameters.
