We are looking to save money by performing in-house calibration/verification of certified monitoring and measuring devices. There is quite a lot of discussion about this issue on the forum, yet I still need help determining what I need to do be properly set up for in-house calibration/verification.
The tightest tolerances we have ever held have been around ±.0005", therefore the most accurate devices we require must be accurate to the the tenth (.0001"). Given this information, we need to determine what the requirements would be for the temperature range of our inspection room as well as the accuracy requirements for the thermometer in that room. Based on this post, the temperature range required for verifying devices with an accuracy to the tenth (.0001") is 20°C ± 5°C (68°F ± 9°F).
We have found a NIST traceable temperature gauge that has an accuracy of ±1°C. That seems more than sufficient to monitor a temperature range of 20°C ± 5°C; we would just need to keep the readings between 20°C ± 4°C to be certain that the temperature is within range.
Am I on the right rack here?
The tightest tolerances we have ever held have been around ±.0005", therefore the most accurate devices we require must be accurate to the the tenth (.0001"). Given this information, we need to determine what the requirements would be for the temperature range of our inspection room as well as the accuracy requirements for the thermometer in that room. Based on this post, the temperature range required for verifying devices with an accuracy to the tenth (.0001") is 20°C ± 5°C (68°F ± 9°F).
We have found a NIST traceable temperature gauge that has an accuracy of ±1°C. That seems more than sufficient to monitor a temperature range of 20°C ± 5°C; we would just need to keep the readings between 20°C ± 4°C to be certain that the temperature is within range.
Am I on the right rack here?