Comparative study of double and dual electroinduction spherical electric field strength sensors

Abstract

The work provides a comparative study of double and dual electric field strength sensors. The comparison examined the design, technological and metrological parameters of the sensors, as well as the complexity of their measuring circuits. Research has revealed similarities in the design and technological parameters of the sensors and differences in metrological characteristics and the complexity of the measuring circuits. In terms of metrological characteristics, dual sensors are significantly superior to double ones. It has been established that a dual sensor having sensitive elements with angular dimensions 1=46,38 , and 2=90 , has a smaller error due to field inhomogeneity. The error does not exceed  ±2,76 % in the spatial measurement range 0a1. With the same error, double sensors can only be used in a limited spatial measurement range of 0a0,89. It is shown that dual sensors are superior to dual sensors in terms of metrological parameters. This indicates the advisability of their use.

Keywords

• electric field strength
• electric field sensor
• double sensor
• dual type sensor
• measurement error
• distance to the field source