Laboratory Magnetometers – VEMA Vector Magnetic Analyzers

The VEMA laboratory magnetometer is a vector magnetometer of our own design, working on the patented physical principle. The VEMA magnetometer is the direct successor of the first digital magnetometer in Czechoslovakia and represents its fourth generation. It is used for the measurements and analysis of the DC and extremely low-frequency weak magnetic fields. It is mainly used for the material research, measurement of the dispersion fields of the electrical machines, devices and distribution systems, in biomedicine and in biology.

Other areas of application are the investigation of the geomagnetic fields and of their local anomalies, measurement and investigation of the objects’ magnetic fields, magnetometric diagnostics, object security, precise navigation etc.

The magnetometer is characterized by the separately decomposable vector probes, which allow the user to measure the gradients, to measure in the Cartesian or other user-defined coordinate system, and to measure simultaneously in the several points in the space.

The VEMA magnetometer includes software for the visualization, analysis and recording of the measured magnetic fields. The analytical tools enable the frequency analysis using the Fourier transform, correlation analysis and the visualization of the position of the magnetic field vector in the space.

Technical specifications

No.Technical parameter / functionValue
1.Four simultaneously working channels4 ch
2.Resolution Better than 1.10–9 T
3.Measurement frequency range min. 250 Hz
4.Direct range without the sensitivity switching (dynamics)100 µT, (100 dB)
5.LinearityBetter than 0.5 % FS
6.Working temperature range with guaranteed parameters10 – 30°C
7.Vector measurementYes
8.Power supply12 V DC
9.Computer connectionUSB
10.Separately deployable probes – the possibility of measurements at arbitrarily defined points and by orienting the probe in themYES
11.Possibility of gradient measurement in two componentsYES
12.Possibility of second-order gradient measurementYES
13.Possibility of vector measurements in the Cartesian system and in one arbitrary direction (or gradient in one selected axis)YES
14.The possibility of operation in the environment with strong electromagnetic interference (up to tens of µT units)YES
15.SW equipment for the data transmission and processing suitable for the dynamics of the measurement of 100 dB and the sampling frequency from 500 to 1000 Hz in four simultaneous channelsYES
16.SW for recording of the measurement results in the files with the parameters of time and channel number, space or time and space simultaneously. View of the data in files or oscilloscope displayYES
17.File format compatible with the SW for the processing, analysis (such as calculation of total magnetic field, differences, dispersions, or correlations) and display of the measurement results, for example using the QtiPlot SWYES
18.Probes with 5 m cable 4 pcs
19.Cable for the connection of the magnetometer to the computer 1 pc