Impedance probe for monitoring the moisture content in building partitions, in particular in brick walls

摘要

An impedance probe to monitor the moisture content of building blocks, especially brick walls, consists of a cylindrical, cellulose absorbent carrier (1),which has a moisture potential adapted to the wall conditions in which two measuring electrodes (2) made of gold or silver combined with wires (3) are placed in parallel with an external impedance analyser. Inside the cylindrical carrier (1),a flexible hose is inserted between the electrodes (2),combined with an air pump by a short (5) with a manometer (6) and a valve (7),On the other hand, on the side of the manometer (6), a rubber sleeve (8) is mounted in the vehicle (1) compressed by means of a butterfly (9) mounted on the threaded part of the short (5) and the resistor plate (10) on one side and the pad (11) on the other. The end of the snake (4) is blinded by shielding,where the temperature sensor (12) is located,and the thickness of the hose (4) with a temperature sensor shield and a short (5) provide two clamping tubes (14) with a cone-shaped edge on the opposite ends of the hose. Silicone orings (15) are drawn on the outside of the snake (4),which divide the inner tube (4) into smaller chambers. The distance between electrodes (2) is 12 to 35 mm. The outer layer of the tube (4) is made of latex, while the inner layer is made of silicone. The temperature sensor (12) is a Pt 100 thermometer with two- three- or four-stroke measuring wires (13).