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• Observe the change in dewpoint indication. The reading will be stable within about 3 minutes, if
the dewpoint is increasing. A longer stabilization period will be required, if the dewpoint is
decreasing. Make sure the reading has completely stabilized before taking the final reading. After
the reading is taken, push the sensor actuator back into the dry-down position.
Note that when the instrument is being operated on a battery it will shut off automatically if no
buttons are pressed for: 6 minutes when sensor is in the sample chamber (the out position), or 3
minutes when sensor is in the desiccant. The unit does not have to be “on” while waiting for
purging or stabilization.