Based on your previous focus on LVDT sensor coaxiality detection and tolerance troubleshooting in hot runner scenarios, the dial indicator method is the most accurate method for detecting coaxiality.
It uses the motion reference of the hot runner needle valve as a reference to directly read the radial runout value of the outer circle of the LVDT probe. The detection accuracy can reach 0.001mm, accurately quantifying coaxial deviation and fully meeting the micron-level detection requirements of hot runners. It is a recognized high-precision detection solution in industrial settings.
Other methods such as tactile resistance and signal verification can only perform qualitative screening and cannot accurately quantify deviation values, with accuracy far lower than dial indicator testing.
