The factory calibration applied to this logger at manufacture can no longer be guaranteed

Error and Warning Messages > The factory calibration applied to this logger at manufacture can no longer be guaranteed

The factory calibration applied to this logger at manufacture can no longer be guaranteed.

 - The recorded temperature values will still be accurate to within 0.5°C.

 - The typical RH-accuracy (at 25°C) for the recorded humidity values will still be within ±2.0% RH from 10% to 90% RH

 - The typical RH-accuracy (at 25°C) outside this range will still be within ±4.0% RH

Please return this logger to the factory for calibration checking.

Some Mk III Temprecord loggers can contain additional calibration information to improve their accuracy.  If you receive the above message it indicates that this calibration information is possibly invalid.

If this is the case, the temperatures and humidity values read from the logger are possibly less accurate than they might be, but they will still be within the accuracy range stated above.  You should return the logger to Temprecord for calibration.

Logger temperature and humidity accuracy can also be affected by the following factors:

•exposing the logger to temperatures outside the specified operating temperature range.

•exposing the logger to strong electromagnetic radiation sources, such as microwaves, high voltage generators, or radio transmitters.

•immersing humidity loggers in liquids or exposing them to environments that might poison the humidity sensor.

Contact Temprecord for more information.

See also:

Error and Warning Messages