3D Printed Capacitive Fluid Level Sensor

Proceedings

Pauritsch, Manfred¹  Abdallah, Ali²  Gasser, Christian³ 

[1] Author to whom correspondence should be addressed.;Automation Technology, CAMPUS 02 University of Applied Sciences, 8010 Graz, Austria;Presented at the Eurosensors 2018 Conference, Graz, Austria, 9–12 September 2018

关键词: capacitive sensor;    interdigital capacitor;    fluid sensing;    3D printed sensor;    fused filament fabrication;    conductive filament;    fluid level sensing;   

DOI  :  10.3390/proceedings2130861

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

A three dimensional, additively manufactured interdigital capacitive sensor for fluid level measurement applications is introduced. The device was fabricated using the fused filament fabrication (FFF) additive manufacturing (AM) process and an off the shelf conductive filament with a volume resistivity ρ = 0.6 Ω cm. The 3D fabrication process allows great flexibility in terms of sensor ̇ design and an increase of the surface area between the electrodes, compensating the relatively large plate separation and yielding a high sensitivity to increasing fluid levels. The measurements presented in this abstract show the average increase of capacitance in response to an incrementally increasing volume of de-ionized water (DI-water) filled between the separate digits.

【 授权许可】

CC BY