Abstract
Electrostatic charges and/or discharges on powders bring about ignition and explosion of powders. Electrostatic problems that occur on powders must be taken care of in the industry. We have developed an electrostatic field sensor which measures electrostatic hazards. This sensor was supplied with compressed air, in order to protect powder particles from getting into it. This paper is related to how the compressed air affects the performance of the electrostatic field sensor. As a result, the performance of the electrostatic field sensor was affected by the compressed air. Namely, the experimental and theoretical values were not the same. This is because movement of the choppers inside the electrostatic field sensor was disturbed by the compressed air.
