dandrummerman21
Stainless
- Joined
- Feb 5, 2008
- Location
- MI, USA
We've got an older mit digital height gage, 192-656 0-18" that is off .004" every 6 inches. so at the full height it is about .012" off. It is consistantly off (3 inches is .002, 9 inches is .006, etc).
Putting the beams up to a large cylinder square, its pretty good (didn't measure it, but there is almost no gap the whole height of the cylinder, 10 inches). The rack is also clean. So it seems like its an encoder issue maybe?
Anyway, we've been dealing with it (our stuff doesn't usually require sub .001 measurements over long ranges, and if it did, we set up a gage block stack). But today, I took the front cover off to clean under the keypad that was sticking.
I noticed 5 potentiometers on the circuit board labeled vr1-vr5. It is a long shot, i'm sure, but do these have anything to do with calibrating this thing? I don't want to move them around if they aren't related to that.
Beyond that, is there anything I should look at while its apart, on the encoder? It looks fine, no damage as far as I can tell.
Putting the beams up to a large cylinder square, its pretty good (didn't measure it, but there is almost no gap the whole height of the cylinder, 10 inches). The rack is also clean. So it seems like its an encoder issue maybe?
Anyway, we've been dealing with it (our stuff doesn't usually require sub .001 measurements over long ranges, and if it did, we set up a gage block stack). But today, I took the front cover off to clean under the keypad that was sticking.
I noticed 5 potentiometers on the circuit board labeled vr1-vr5. It is a long shot, i'm sure, but do these have anything to do with calibrating this thing? I don't want to move them around if they aren't related to that.
Beyond that, is there anything I should look at while its apart, on the encoder? It looks fine, no damage as far as I can tell.