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Gage R&R Studies for Process Monitoring Instruments?

R

Ravi

#1
#1
Sir,
Is R & R study required for process monitoring instruments or is it only for the product monitoring/measuring instruments only.

------------------
Sincerly,
Ravi kumar.
 
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Jerry Eldred

Jerry Eldred

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#2
#2
I'll try to give you my layman's answer. I am not an MSA / R & R expert, rather I am a metrology engineer with 25 years experience (so take my attempt from that perspective).

R& R is needed for any measuring instrument whose readings/accuracy/stability you depend upon for product specs. I don't know what aspect of the production you are monitoring, but my guess is (based on your wording) that it may be needed. If you are monitoring a quantitative specified parameter or using readings from this monitor to determine whether you are in or out of control on your process, I would think, yes.

If you could elaborate a little more, that may be helpful. I understand if you don't want to put actual process details on the web (you could put fictitious representations of the process).

------------------
 
Marc

Marc

Hunkered Down for the Duration with a Mask on...
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#3
#3
Jerry is, as always, correct. However the key word in your question:

-> Is R & R study required for process monitoring
-> instruments or is it only for the product
-> monitoring/measuring instruments only

Is the word required. Do you mean required by QS-9000 or ISO 9001:2000?

In the world of Best Practices you would do an R&R on both inspection/test and process instruments, as Jerry points out. But, as Jerry also says, we need more info to go beyond these general statements.
 
A

Al Dyer

#4
#4
A gage is a gage is a gage,

If it monitors a process or product it needs to be evaluated. Just a good business practice.

ASD...
 
Marc

Marc

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#5
#5
A Method for Evaluation

Originally posted by Al Dyer
A gage is a gage is a gage,

If it monitors a process or product it needs to be evaluated. Just a good business practice.
Click to expand...
Can you recommend a method? You really can't do an R&R per se on a process gage.

See Gage R&R with Automated Gages - No Operator Bias for some thoughts. Not directly related, but some interesting thoughts.
 
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