The Elcometer NDT CG50DL Corrosion Ultrasonic Thickness Gauge (part number CG50DL) is a handheld ultrasonic gauge with data logging, calibrated on site by the user to give accurate thickness measurements across a wide variety of material substrates. This product has been discontinued; contact BAMR for a recommended replacement model.

Corrosion thins the walls of pipelines, tanks and metal structures from the inside, where the loss is invisible until a wall is close to failure. The CG50DL sends an ultrasonic pulse into the material and times the returning echo to calculate remaining thickness, letting inspectors monitor metal loss over time. Its high speed scan mode takes 16 readings per second to sweep an area quickly for defects or the thinnest point on pipelines and large surfaces. Differential mode displays the plus or minus difference from a user-set nominal thickness, and the minimal thickness alarm illuminates a red LED with an audible alarm when a reading falls below the target value. The gauge stores up to 1,000 readings, and the supplied data management software downloads them directly into spreadsheets via the RS232 dataport for analysis and reporting.

The gauge works in Pulse-Echo mode at 4 readings per second in manual mode over a measuring range of 0.63 to 500mm, with accuracy of plus or minus 0.01mm and resolution of 0.01mm. The velocity calibration range is 1250 to 10,000m/s, with single, two point and velocity calibration options and a dual element transducer at 1 to 10MHz. The aluminium case runs up to 200 hours on 2 AA batteries. The CG50DL was supplied by BAMR, South Africa's authorised Elcometer distributor.