Ferrites India

Baner, Pune, Maharashtra

Pole detectorsare used only to check the polarity of the magnet.

It is used where magnet strength is not required to be measured.

FI make pole detectors are rugged and handheld to make them useful in the field.

The tip of the unit detects the field polarity.The magnet surface is placed parallel to the unit tip.Two 1.5V AA battery operated. Power ON Switch activates the sensors and gives visual indicationin form of two LEDs placed on the arm of the unit.

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 Helmholtz enables the 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 field room is 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 tern their quality.

Ferrites India has developed systems to check Ultra Soft Magnetic materials.

These very high permeability, low Permanence and Low Coersivity materials are used in CTs, R&D laboratories, shielding etc.

Testing of Solid Rods

Test pieces in round or square rod forms can be very easily tested for their DC properties. Properties such as coersivity, permeability, magnetization can be tested. The field for testing can be taken to 600A/cm. With our newly designed fixture, it can be taken up to 1000A/cm.

Result showing initial curve and permeability Curve.

Testing of Laminated Toroids

Laminated Toroids can be tested at DC and AC frequencies. Ferrites India provides testing for extensive varieties of toroid sizes, frequencies and properties.

The HLT can take measurements on samples With coercivities as low as mA/cm. Fig. shows DC Hysteresis Loop of Vitrovac sample having coercivity in the range of 1.6 mA/cm.

The squareness of the loop as low as 1.007 can be measured. Fig. show DC and 50Hz measurements of ultra soft materials with Br Value.

Relative Permeability as high as 3, 00, 000 lacscan be measured with this instrument

Accurate measurements of watt-loss at desired flux densities. Watt-loss as low as 0.01Watts/kg can be measuredon the HLT machine.

DC Field of testing can be as low as 0.1Oe FS to as large as 400Oe FS.

• Testing of Electrical Steel
• Inspection for incoming material
• Epstein StackSingle Sheet Testing

Incoming material inspection can be very useful where strict quality standards are maintained. It saves a lot of processing cost since lossy material is inspected at the entry level before it goes to production level. Epstein Stack testing is one of the oldest and widely used method for electrical sheet testing.

Another method newly emerging is Single Sheet Testing.

Similar to Epstein stack testing, this method uses less material. Ferrites India Make Epstein Stack and Single Sheet Tester adhere to ASTM standards and provide accurate results.