NM014720002

The Karl Deutsch RMG-4015 RMG reference block is a vital accessory for ensuring the accuracy of the Karl Deutsch RMG-4015 Crack Depth Meter. This reference block serves as a calibration and verification standard for the instrument, which utilizes the AC potential drop (ACPD) method to measure surface-breaking crack depths in electrically conductive materials.

The primary purpose of the RMG reference block is to provide known, artificial flaws in the form of precisely machined notches. These notches simulate actual surface cracks of specific and documented depths. By taking measurements on these calibrated notches, users can establish a reliable baseline and calibrate the RMG-4015 instrument across its measurement range.

This multi-point calibration process significantly enhances the accuracy of the crack depth readings obtained during inspections.

Typically, the reference block is manufactured from a material that is electrically similar to the materials being tested with the RMG-4015. This ensures that the electrical properties relevant to the ACPD method are consistent between the calibration standard and the test specimens.

The RMG reference block contains one or more notches of varying, precisely known depths. These notches allow for a comprehensive calibration of the RMG-4015, enabling the instrument to accurately measure cracks of different sizes. The documented depths of these notches are critical for the calibration procedure.

Beyond initial calibration, the reference block is also essential for the ongoing verification of the RMG-4015's performance. By periodically measuring the known notch depths, users can quickly confirm that the instrument is still operating within acceptable accuracy limits, ensuring the reliability of their crack depth measurements over time.

The RMG reference block, often identified by a specific Karl Deutsch part number, may be included as part of a standard RMG-4015 Crack Depth Meter kit or can be purchased separately as an accessory. It is an indispensable tool for any user of the RMG-4015 who requires accurate and traceable crack depth measurements.