Area Thermometer Calibration

I am looking at putting in digital room temperature sensors/monitors that record temps to the cloud for monitoring and alarm notifications, note; my room temperatures are my CCP's, we are a fresh meat operation. The sensors I am looking at installing come with a NIST calibration record that is good for a year. Each new calibration will cost $165 per sensor which is a deterrent to weekly or even monthly calibrations, in addition they need to be sent out to a calibration lab. Currently I calibrate digital stick thermometers that are used in the rooms weekly. I have yet to find where a digital stick thermometer is off by more that .7 degrees F. in years of calibrating digital thermometers, either they work or they don't. Is it possible to write a calibration program to calibrate a digital thermometer annually providing it is calibrated to NIST standards at an outside lab and use the NIST calibration documentation as record?

Thank you

Yes you can write calibration program in that way.

Thank you, however my supporting documentation that I can find only states weekly for thermometer calibration requirements, how do I get around that?

Thank you, however my supporting documentation that I can find only states weekly for thermometer calibration requirements, how do I get around that?

I think that there are two subjects that we are using interchangeably.   Calibration and verification.   

You should probably be verifying that even a NIST certified thermometer is accurate with some frequency.   

In your case, if a thermometer was found out of calibration after a year in service, you would have a CCP non conformance for the entire year.   

example:  calibrated annually.  verified as accurate daily, weekly, monthly, etc.