SU509850A1 - Permeameter - Google Patents

Description

(54) PERMEAMETER

i

The invention relates to electrical measuring technology and may be used to measure the magnetic characteristics of ferromagnetic materials.

There are known permeameters containing a primary winding and a secondary winding, made in the form of a short-circuited coaxial coil consisting of an outer, inner krc electrode, the inner electrode of which is in the form of P & y. individual elements located symmetrically with respect to the permeameter axis, upper and lower, the latter consists of two shishndOBs, each of which contains a core with unwinding, made up by the way of the amp & half of the primary about the coils of permeameter,

The known permeamers have a large measurement error, due in large part to the instability of the transition of contact resistance, which is iO and can be straightforward in both directions,

The purpose of the invention is to improve the measurement accuracy,

2

The proposed permeameter is different in that the.-Top element of the electrode BATT electrode is made in the form of douh sets of sectors located around the region such that the sectors of the one set are located between the sectors of the corner.

The device shown in the drawing,

The short-lined coaxial coil includes an outer elec- tric 1, an inner electrode of B, the individual elements 2 and 3 of the shorting of their lid 4. The same cores 5 and 6 of the same are put on each Bnutre15 element of the non-electrode. windings 7 to 8, which are half of the primary winding perm meter, in the upper clock. The perg emetra, which is a merchant KOI container 9j, will interfere with: a sample.

Removable cover 4; an erase of the transitional contact S between the junction of the external electrode KcaKcttajsQ, as well as the contacts 11 tt 12 between the two clays to the two elements of the internal electrode

The magnetic characteristics of ferromagnetic materials are determined using this permeameter with a consistent connection of the halves 7 and 8 of the primary winding. These potyubins can be turned on in the opposite direction, in the result of which the field in the container 9, in the location of the test specimen, can be absent (resistance of the transitional contact 11 and 12 is odanac due to their sectional design and mutual

location). The quality factor obtained in this case at the resonator at the resonance characterizes the intrinsic parameters of the resonant circuit with on-line switching on, regardless of whether the test sample is in the container or not. The quality factor of the RESONNS contour with an on / off one depends only on the secondary resistance of the short-circuited permeameter. It changes with changes in the alignment of pins 10, 11 and 12,

Counter-start must be performed after each subsequent opening and closing of the container. In this case, the Q-factors of the resonant circuit should be the same.

This is equivalent to the equality of the extreme resistances of the container contacts.

Claims (1)

Invention Formula A permeameter containing a primary winding and a secondary winding, made in the form of {a short-circuited coaxial coil consisting of an outer, inner electrodes and a cap, the inner electrode of which is made in the form. . two separate elements arranged symmetrically about the axis of the permeameter, the upper and the lower, the latter consisting of two cylinders, each of which has a core with a winding constituting the two halves of the primary winding of the permeameter, in order to improve the accuracy measurements, the upper element of the internal electrode is made in the form of two sets of sectors, arranged around the circumference so that the sectors of one set are placed between the sectors ni.