Internal calibration (stopwatch)

Qualityx

Starting to get Involved
#1
Dear all,

our company is certified by IATF, we will start new process, internal calibration of stopwatch. Process, which will be checked by the stopwatch in production process has tolerance ± 1s. So, we will make some jig or something to run/stop etalon stopwatch together with stopwatch which we will calibrate. Other/Alternative process is just together run/stop both stopwatch by hand. Stopwatch can run e.g. 12 or 24 hours during calibration process. This process will be repeated 5 or 10 times..., temperature about 23°C and humidity about 30 or 40%. We will input this new process to our internal calibration documentation.

Please, what is your opinion, will be this process enough accurate when the tolerance for measured process is ± 1s? Is this possible present as relevant calibration process for the stopwatch?

Thank you with best regards,
 
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Ashland78

Involved In Discussions
#4
Reaction time is usually +/- 1 sec. You can get NIST taxable stopwatch that reads .01 sec have it be on 3 year calibration interval. I question reaction time though.. repeatability
 
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