The article presents the monitoring potential of a simplified surface Time Domain Reflectometry (TDR) sensor design. Its basic element is a polyvinyl chloride (PVC) plate with two rods placed along the plate edges. The paper describes typical, invasive TDR sensors and the attempts to build a non-invasive TDR sensor for the dielectric moisture determination. The newly developed flat TDR sensor presented in this article has a simple design, which makes it cheap, easy to carry and prospective for practical applications. Within the conducted examinations, the developed sensor specimens were calibrated and tested in an exemplary moisture transport experiment.

The analysis of moisture changes in the sample of the examined material confirmed the usefulness of the developed TDR sensor and its applicability for the non-invasive moisture changes monitoring in hard porous materials.

本文介绍了简化的表面时域反射仪（TDR）传感器设计的监视潜力。它的基本元素是聚氯乙烯（PVC）板，沿板边缘放置有两个杆。本文介绍了典型的侵入式TDR传感器，以及为电介质水分测定构建非侵入式TDR传感器的尝试。本文介绍的新开发的平面TDR传感器具有简单的设计，使其价格便宜，易于携带，并有望在实际应用中使用。在进行的检查中，将对开发的传感器样本进行校准并在示例性的水分传输实验中进行测试。

对被检材料样品中水分变化的分析证实了开发的TDR传感器的有用性及其在硬质多孔材料中非侵入性水分变化监测的适用性。