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This thread is carried over and continued in the Current Elsmar Cove Forums 
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This thread is carried over and continued in the Current Elsmar Cove Forums
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The New Elsmar Cove Forums
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 The New Elsmar Cove Forums
 ISO 9000:1994
 Test & Measuring Equipment
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This topic has been transferred to this forum: Calibration and MSA. |
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| Author | Topic: Test & Measuring Equipment |
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Ron Dooley Forum Contributor Posts: 10 |
posted 02 February 2000 04:11 PM
   
This question is a result of a survey by one of our customers. The question: Control of Test & Measuring Equipment. "Requirement by our customer. I know of no requirement for ISO or QS that has any language concerning statistical studies for calibrations to determine frequency. Would appreciate any help. Thanks IP: Logged |
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David Mullins Forum Contributor Posts: 248 |
posted 02 February 2000 05:36 PM
Good Management! When you open the book that came with the equipment, what is the manufacturers recommendation on calibration frequency. Determining this frequency yourself can be an expensive and time consuming operation. Additionally, I know in Oz there are already numerous standards that provide this sort of guidance. At the end of the day, the stats to determine frequency relate to the average time taken to exceed the acceptable degree of risk of the accuracy of the equipment. ------------------ IP: Logged |
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Marc Smith Cheech Wizard Posts: 4119 |
posted 02 February 2000 05:49 PM
I don't know that there is a specific requirement for statistical techniques but I would be ready to use cal records as evidence of stability during your cal interval. I would also be ready to say you evaluated the need for statistical analysis of calibration data and found it to not be value added based upon instrument stability. You don't need a graph to tell when the instrument is wearing or such - its stability will fall with use. If heavily used this could be a day or a week. Or it could be a month or a year. Lot's of possibilities. IP: Logged |
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Marc Smith Cheech Wizard Posts: 4119 |
posted 04 February 2000 11:50 AM
By the way, graphing, as I understand it, is a 'statistical technique'. Have any of you run into this? Because of it being calibration in nature, I'm moving this thread to the Calibration forum. This link will take you there: https://elsmar.com/ubb/Forum4/HTML/000149.html [This message has been edited by Marc Smith (edited 04 February 2000).] IP: Logged |
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