Vaisala DMT340 - Manual (Page 140)

User's Guide _______________________________________________________________________
138 __________________________________________________________________ M210704EN-G
A sensor purge should be performed always before calibration (see the
calibration instructions) or when there is a reason to believe that a sensor
has become exposed to an interfering chemical.
Starting and Configuring Sensor Purge
Using Display/Keypad (Optional)
1. Open the Main Menu
by pressing any of the ▼▲◄► arrow
buttons.
2.
Select ►Measuring, press ►button
.
3.
Select ►Purge, press ► button.
1103-067
Figure 73 Sensor Purge Settings
- Start the sensor purge manually by selecting Start purge now
and pressing START.
- Select Purge on power-up by using the arrow buttons. Press
On/Off to turn the start-up purge on/off.
- Set the automatic purge interval by selecting Interval: ..., press
SET. Set the purge interval and the unit (minutes/hours) by
using the arrow buttons. The interval must be 10 min … 48 h.
Press OK.
- If you have the data logger module installed, you can also
specify the Date and Time when the purge is performed next.
4. Press EXIT to return to the basic display.
1103-066
Figure 74 Performing Sensor Purge