FE Power Forums
FE Power Forums => Non-FE Discussion Forum => Topic started by: GJCAT427 on January 07, 2022, 06:24:20 AM
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I`m pulling the trigger on getting a checker, where can you buy the calibration bar? All of the units I've looked at don't have them.
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On the UM 6500, and most of the similar testers I’ve seen, the calibration area is built into the unit. I circled the spot used for the calibration on this picture of a UM 6500 from the Internet. It’s this coin sized metallic spot on the front of the unit.
(https://i.postimg.cc/8PfB2tQ8/39-C97-E9-E-03-A4-4657-95-E1-C15-CDB5-E9-FF2.jpg) (https://postimg.cc/mtRHM3gV)
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Kevin is correct. The other thing you can do is to calibrate it on a portion of what you are testing. For example, just use a caliper to measure the china wall on a block, and compare that to what the sonic checker tells you. You can also do it on the areas between the bores. I like checking it on the actual piece because the calibration standard built into the checker uses a different material than the cast iron we normally use, so the setup on the sonic checker is different.