On 02/17/2016 03:52 PM, Dave Cole wrote: > I'm shopping for some linear/glass scales for a custom industrial machine. > > I only need to read 8" of travel. > > Does anyone know of an economical solution. I'd like full quad > outputs - ttl would be ideal. > I don't need super resolution or accuracy. .001" would be sufficient. > > Most since the early 1980's are metric. So, 25 um quadrature count is .0009843". Therefore, a scale with 100 um line spacing would give you that resolution. Just look on eBay. Especially, 8" or so scales should turn up, they are less useful for machine conversions.
If you want brand new, there are a bunch of outfits making DRO systems, and many of them still use glass scales. Check the Enco catalog, they used to allow you to buy just the scales. There are also things that are essentially digital calipers with the measuring jaws left off, and they generally do NOT have quadrature output. Possibly they could tell you by phone which is which. Jon ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
