Vaisala DM500 - Manual (Page 63)

Chapter 11 _____________________________________________________ Measurement Settings
VAISALA _______________________________________________________________________ 61
NOTE
Select the water cooling only if the water is actually supplied to the
sensing unit. Otherwise the sensing unit can be overheated
To select the cooling method:
1. Open MENU : press .
2. Select ► Measuring , press .
3. Select ► Measurement settings , press .
4. Select Cooling method .
5. To select air cooling, press AIR .
6. To select water cooling, press WATER .
7. Press EXIT to return to the main view.
More information about selecting the cooling method on page 38.
Statistical Filtering
The statistical filtering is on as default. When the filtering is on, the
dewpoint reading is changing in steps and the statistical uncertainty
value is calculated for each reading and the statistical error limit is
shown in the display. If the filtering is turned off, the reading shows
the trend of the sensor temperature variation in real time. Thus,
changes in humidity can be seen more rapidly but the error limit is not
shown in a display.
1. Open MENU : press .
2. Select ► Measuring , press .
3. Select ► Measurement settings , press .
4. Select Statistical filtering , press OFF .
5. Press EXIT to return to the main view.
The statistical filtering can also be turned on/off by using serial
command ANAL, see serial commands.