Annually: | References:

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Thermometer Verification

I. Annually:

All thermometers in use must be verified annually against an N.B.S. standard thermometer over their range of use. All thermometers purchased must be verified against an N.B.S. standard thermometer over their range of use before being put into use.

  1. Obtain the N.B.S. thermometer from Instrument Specialist Department at the UCL Cathedral Square Site.
  2. Place the N.B.S. thermometer and the thermometers that are being verified into the same medium for 30 - 60 minutes.
  3. Record the temperatures of both the N.B.S. thermometer and the thermometers being verified on the Temperature Verification Log.
  4. If the thermometer being verified has a temperature bias, indicate this on the thermometer label including the temperature limits for that thermometer. In addition, record this temperature bias on the Temperature Verification Log.
  5. Thermometers may vary from the N.B.S. thermometer by no more than 1.5°C.
    Note: One exception to the rule is made for the 100°C Thermolyne Dri-Bath in MMC Serology. The actual temperature variance from the NBS probe can be ± 3°C.
  6. All thermometers should be checked at this time for clarity of numbers, chips, etc. and discarded if damaged.
  7. Label the thermometer using waterproof tape and a permanent pen. Fold the tape around the top of the thermometer. The label must follow this template:
    Thermometer: Site and ID# (e.g.. MHC #4)
    1. N.B.S. temp = Actual temp. (temperature of calibrated device.)
      (e.g.: 37° = 37.6°C)
    2. Range: Acceptable range for that thermometer
      (ex. 36.6° - 38.6°C)

II. References:

  1. Recording and Thermometer Verification Procedure. SMU; M. Roth, 11-26-80.

 

  1. 10-10-88 L. McGovern
  2. June 1990 L. McGovern
  3. May 2005 D. Stence (Revised: I.5.Note)

 

Reviewer:

Instrument Specialist:

Technical Director:


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