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I made a GR&R to a valve tester, the valve tester has the following test settings:
0 to 850 psi fails
850 to 999 psi is a #1 valve
1000 to 1099 psi is a #2 valve
1100 to 1199 psi is a #3 valve
1200 to 1299 psi is a #4 valve
1300 to 1399 psi is a #5 valve
1400 to 1549 psi is a #6 valve
Above 1550 psi fails.
I took 1 or 2 valves from each of the types of valve from #1 to #6 and the results are attached since I couldn't upload pictures to a image hosting website from my work's browser..
The issue here is that if I grab a valve and it measures 1400, then I test it again and it measures 1375, the operator is not going to measure it twice so he is going to label it as wathever the first reading belongs to, I hoped that by performing the GR&R it would show me a high variation % from the equipment but it didn't..
My question is should I have picked 10 samples but only from 1 type of valve rather than 10 samples from all the types of valves ? for instance 10 valves varying from 1300 to 1399 rather than 10 valves from 0 to 1550 ??
0 to 850 psi fails
850 to 999 psi is a #1 valve
1000 to 1099 psi is a #2 valve
1100 to 1199 psi is a #3 valve
1200 to 1299 psi is a #4 valve
1300 to 1399 psi is a #5 valve
1400 to 1549 psi is a #6 valve
Above 1550 psi fails.
I took 1 or 2 valves from each of the types of valve from #1 to #6 and the results are attached since I couldn't upload pictures to a image hosting website from my work's browser..
The issue here is that if I grab a valve and it measures 1400, then I test it again and it measures 1375, the operator is not going to measure it twice so he is going to label it as wathever the first reading belongs to, I hoped that by performing the GR&R it would show me a high variation % from the equipment but it didn't..
My question is should I have picked 10 samples but only from 1 type of valve rather than 10 samples from all the types of valves ? for instance 10 valves varying from 1300 to 1399 rather than 10 valves from 0 to 1550 ??
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