Description

Kolectric Micro Covermeter (possibly an MC7000 model) in black fitted leather case with carry strap. Probe and connecting cable. Instructions missing. It is used for non-destructive checking of steel reinforcement in concrete structures.

Covermeters (often referred to as R-Meters) are electromagnetic devices that detect the reinforcing steel in concrete and measure its size and the depth of concrete cover. It produces a magnetic field and locates the reinforcing steel by measuring the distortion of the magnetic field created by the presence of the steel. The signal received increases with increasing bar size and decreases with increasing cover thickness. Using more than one sensor, the covermeter can be calibrated to convert the signal into a distance, which indicates the depth of cover. They can accurately measure the cover depth to within of an 0.25 in (6 mm) in the range of 0 to 3 in (76 mm) in lightly reinforced structural members. Covermeters can also be used to locate reinforcing steel for the purpose of “tying-in” a new structural member to an existing structure.

It is operated by moving the probe across the surface of the concrete when a reinforcement bar is located there is an audio signal and the device can then be used to determine the orientation, depth and bar diameter.

This device was sold 03/02/1988 to a customer within the UK.

A user manual for the covermeter can be found here.