Digital Ding Inspection Device

Abstract

Inspection of an interior bottom of a borehole by means of measuring the sediment thickness at the bottom. A digital inspection device to be lowered in the borehole supports an electrical transformer for the continuous measurement of the sediment thickness at the bottom of a borehole. A digital readout unit receives signals from the electrical transformer and displays the bottom sediment thickness.

1 . An improved inspection device comprising an upper metal plate, three legs attached to the upper plate, a position sensor attached to the upper plate, a digital readout unit, a cable connecting the position sensor by a waterproof connector and the digital readout unit, a bottom plate with holes, three lifting eye bolt rings attached to the upper plate for insertion into a borehole for measuring sediment thickness at the bottom of the hole. 
     
     
         2 . A method of inspecting a borehole, either dry or into a liquid, by means of measuring the sediment thickness at the borehole bottom using said device of  claim 1 . 
     
     
         3 . The improved inspection device according to  claim 1  wherein the upper plate comprises a round metal plate and three lifting eye bolt rings attached to the upper surface of the plate. 
     
     
         4 . The improved inspection device according to  claim 1  wherein the three legs comprises metal bars with sharpened tips. 
     
     
         5 . The improved inspection device according to  claim 1  wherein the position sensor comprises a device for measuring displacement, said displacement representing the sediment thickness at the bottom of a borehole. 
     
     
         6 . The improved inspection device according to  claim 1  wherein the digital readout unit comprises a computer having a display, responds to the signals from the electrical transformer for displaying the sediment thickness at the bottom of a borehole. 
     
     
         7 . The improved inspection device according to  claim 1  wherein the cable connects the digital readout unit and the position sensor with a waterproof connector.