Showing results: 31 - 35 of 35 items found.
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Oersted Technology
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to an integrating fluxmeter, which gives an accurate indication of the overall strength of the magnet when it is withdrawn or rotated a half-turn.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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480 -
Oersted Technology
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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Magnetic Instrumentation Inc.
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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Model 2130 -
Magnetic Instrumentation Inc.
The Model 2130 Fluxmeter is a fully featured, high-end Fluxmeter based measurement system. It is a compact instrument with high accuracy, automatic drift correction, microprocessor control, and twelve measurement ranges to allow the operator to configure the meter for maximum resolution and accuracy. The Model 2130 is capable of measuring (DC), alternating (AC), or pulsed magnetic fields. Selecting primary measurement functions is quick and easy with dedicated front panel function keys. An easy to use menu allows access to user defined parameters such as upper and lower magnetic limits and relative magnetic measurements.
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Ferrites India
It is very important to measure the content of magnetic allow in toner powder. The accuracy with which the measurements are carried out determines the quality of the powder. Fluxmeter with a specially made coil can give accurate results of the percentage quantity of the magnetic material in the toner powder.
