Vaisala DM500 - Manual (Page 65)

Chapter 11 _____________________________________________________ Measurement Settings
VAISALA _______________________________________________________________________ 63
Transient Recovery Time
The transient recovery time is the time the sensor waits before starting
the fast recovery cycle after rapid dewpoint change. If there are large,
rapid step changes in humidity level the shorter transient recovery
times are recommended. If the changes are slow (like typically at low
dewpoints), the longer transient recovery times are recommended.
Selecting the
Off option turns the transient recovery time function off,
meaning that after rapid dewpoint change the fast recovery cycle will
not be initiated.
NOTE
It is not recommended to turn Off the transient recovery time function.
If there are large, rapid dewpoint changes and the transient recovery
time function is off, the response time may be hours.
1. Open MENU : press .
2. Select ► Measuring , press .
3. Select ► Measurement settings , press .
4. Select Transient recov. , press SET .
5. Select one of the following options, press SELECT .
20 s , 60 s , 2 min (default), 5 min , 15 min , Off .
6. Press EXIT to return to the main view.
Setting the Temperature, Pressure, and Flow
Values
In case the device does not have the optional temperature, pressure
and flow sensors, the fixed manually fed values (e.g. for calculations)
are given as follows:
1. Open MENU : press .
2. Select ► Measuring , press .
3. Select ► Process variables , press .
4. Select the parameter you want to change by using the arrow
buttons.
5. Press CLEAR to clear the old value.