Fox Heritage Foods Standard Operating Procedure for the Calibration of Thermometers
5957 Mckee Rd Doc. No. 02 Rev. No.
Fitchburg WI 53719 Effective Date: 1/1/2014
Page 1 of 2
Purpose/Scope
To assure that all thermometers used during meat processing are accurate and in proper working order.
To assure the safety of Fox Heritage Foods through the proper calibration of it’s equipment.
Responsibility
Processor or Designee will calibrate the thermometers prior to use by using the specifications of the
manufacture of the equipment or the following procedures will be implemented.
Reference/Related Documents
Thermometer Calibration Log
Procedure
1. Each thermometer will be assigned an ID number.
2. Thermometers intended for measuring higher temperature items, such as cooked product, will be
calibrated in hot water, while those used for taking lower temperatures will be calibrated in ice water. All
thermometers will be calibrated within + or – 2 degrees Fahrenheit (˚F).
3. Thermometers in use will be checked against a certified thermometer during calibration, if available.
Otherwise, all thermometers will be calibrated either against each other, or against a thermometer
that is used only during calibration. These methods would require a minimum of three thermometers
for accuracy.
4. Record the results, using actual values, on the Thermometer Calibration Log, along with the date and
initials of the person performing the calibration procedure.
Thermometers that cannot be easily calibrated through direct immersion in either ice water or hot
Fox Heritage Foods Standard Operating Procedure for the Calibration of Thermometers
5957 Mckee Rd Doc. No. 02 Rev. No.
Fitchburg WI 53719 Effective Date: 1/1/2014
Page 1 of 2
Purpose/Scope
To assure that all thermometers used during meat processing are accurate and in proper working order.
To assure the safety of Fox Heritage Foods through the proper calibration of it’s equipment.
Responsibility
Processor or Designee will calibrate the thermometers prior to use by using the specifications of the
manufacture of the equipment or the following procedures will be implemented.
Reference/Related Documents
Thermometer Calibration Log
Procedure
1. Each thermometer will be assigned an ID number.
2. Thermometers intended for measuring higher temperature items, such as cooked product, will be
calibrated in hot water, while those used for taking lower temperatures will be calibrated in ice water. All
thermometers will be calibrated within + or – 2 degrees Fahrenheit (˚F).
3. Thermometers in use will be checked against a certified thermometer during calibration, if available.
Otherwise, all thermometers will be calibrated either against each other, or against a thermometer
that is used only during calibration. These methods would require a minimum of three thermometers
for accuracy.
4. Record the results, using actual values, on the Thermometer Calibration Log, along with the date and
initials of the person performing the calibration procedure.
Thermometers that cannot be easily calibrated through direct immersion in either ice water or hot
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