FIELD: physics.
SUBSTANCE: invention relates to magnetic measurements and can be used for measuring components and full vector of the Earth field density. Substance of the invention consists in suggested method for determining thermal characteristics of three-component magnetometer (TM), by heating or cooling TM within the given temperature range and exposing TM to temperature until the temperature inside TM will be equal to the required number of temperature range values and defining at each value parameters of TM transforation characteristics by via orientation of its geometrical axes relative to axes of the reference coordinate system. Then, based on results of parameters determination at corresponding temperatures, TM thermal characteristics are measured. Herewith the measurement of parameters of TM transformation characteristic is performed via orientation of its geometrical axes in the Earth magnetic field relative to axes of base plane with the help of non-magnetic rotary device having rectangular shape, and thermal effect on TM is ensured by heat absorbing body of the rotary device, which is thermally isolated from outer sides after its heating or cooling. Also device for determining thermal characteristics of three-component magnetometer (TM) is disclosed, which contains non-magnetic rotary device, heating and cooling chamber, personal computer connected to the output of tested TM, temperature sensor and connected to its output temperature measuring device, the output of which is connected to the second input of personal computer. Herewith the rotary device having rectangular shape is made of nonmagnetic material in the form of heat absorbing body ribs of which are collinear to the corresponding axes of its own orthogonal coordinate system. Surface of the rotary device location in working position is the basic plane, oriented with its own axes relative to the vector of the Earth field density, provided that major part of surface of each rotary device edge has uniform rectangular recess, where heat insulating pad is inserted, and the remaining ribbed part of the edge surface in the form of narrow strips along the whole perimeter of recess, adjacent to the ribs of rotary device, is coated with thin layer of low-conductivity coating (paint). Inner part of heat absorbing body of rotary device is equipped with temperature sensor and has place and fixture for installation and fixation of tested TM with its own axes collinearly directed along the corresponding axes of rotary device coordinate system.
EFFECT: technical result – simplification of means for determining thermal characteristics of TM, ensuring accuracy of their temperature calibration.
2 cl, 1 dwg
