The Elcometer NDT CG70BDL Corrosion Ultrasonic Thickness Gauge (part number CG70BDL) is a handheld ultrasonic corrosion thickness gauge with a large display and B-Scan capability for inspecting pipes, tanks and metal structures. Internal corrosion thins a wall from a surface that cannot be seen, and an undetected thin section can fail in service. The CG70BDL measures remaining wall thickness and presents a 2D cross sectional block view, so inspectors can identify pits and corroded areas rather than relying on a single numeric reading.

Measurement uses Pulse-Echo (PE) and Echo-Echo (EE) ThruPaint technology, where Echo-Echo ignores an applied coating to return true material thickness. The PE range of the Elcometer NDT CG70BDL Corrosion Ultrasonic Thickness Gauge is 0.63 to 254mm and the EE range is 1.27 to 102mm, with ±0.01mm accuracy, 0.01mm resolution and a velocity calibration range of 1250 to 9,999m/s. A dual element transducer (1 to 10MHz) is driven by a square wave pulser, and the 1/8 inch VGA greyscale display (62 x 45.7mm viewable area) shows digits, the B-Scan and a scan bar. High speed scan mode runs at 32 readings per second, with the B-Scan refreshing at 15 seconds per screen.

Gain in PE mode is selectable low, medium or high, while Echo-Echo uses automatic gain control to adjust the received echo amplitude for difficult materials. The Elcometer NDT CG70BDL Corrosion Ultrasonic Thickness Gauge holds 6 factory and 64 user-definable setups transferable to and from a PC archive, and the data logger stores 12,000 readings with waveforms using sequential and grid logging, alphanumeric batch identification and an OBSTRUCT marker for inaccessible points, output over bi-directional RS232 to the Elcometer NDT data management software. Unlike the CG70ABDL, the Elcometer NDT CG70BDL Corrosion Ultrasonic Thickness Gauge does not include the A-Scan display. It is supplied by BAMR, South Africa's authorised distributor.