To obtain the best possible accuracy in measurements taken in dry environments, DM70 has built-in automatic calibration. During the autocalibration, DM70 adjusts the dry-end reading to correspond to the calibrated values. This is a unique and patented method to avoid errors in accuracy when monitoring low dew points.
The autocalibration is carried out if the following criteria for the measurement environment are fulfilled:
- Relative humidity must be
- < 5 % (DMP74A)
- < 2 % (DMP74B/DMP74C)
- Temperature must be 0 < T < 60 °C
- Humidity environment must be stable. The maximum change in the dew point can be 1 °C within 30 seconds.
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Autocalibration cannot operate if the above criteria are not met. |
If the adjustment in the autocalibration reaches a preset, maximum value or if the autocalibration correction fails, for example, because of unstable conditions, a new autocalibration may take place later (if the automatic autocalibration is turned on). Autocalibration can be either automatic or manual.