On 2/11/20 2:53 PM, Gene Heskett wrote: > On Tuesday 11 February 2020 13:34:29 Chris Albertson wrote: > >> "JB Weld" Epoxy. It is a mixture of two part epoxy and steel powder. >> Get it at any auto parts store or Home Depot. >> > It it magnetic enough to fool an ATS-667? Thats been the reason I > haven't tried it. I have some but it could be getting old by now.
These gear tooth sensors use a couple of tricks that allow them to automatically compensate for installation variables - hysteresis, automatic gain control, etc. The electronics after the Hall effect sensors accentuate the difference in the signals. Rather than having a fixed threshold, they're adaptive. I was almost sure that was the case for your part but I double checked with the datasheet. https://www.allegromicro.com/en/Products/Sense/Magnetic-Speed/Transmission-Sensor-ICs/ATS667 "High-resolution peak detecting DACs are used to set the adaptive switching thresholds of the device. Hysteresis in the thresholds reduces the negative effects of any anomalies in the magnetic signal associated with the targets used in many automotive applications." Unless you completely bury the sensor in JB Weld, you should be OK. It's designed for automotive applications. It'd probably work beneath a couple of millimeters of JB Weld. _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
