Chapter 4 ________________________________________________________________ Operation
VAISALA ______________________________________________________________________ 125
Interval Purge
When DMT345 and DMT346 leave the factory the interval Purge takes
place repeatedly with the time intervals set in the factory. The user can
change the interval in which the purge takes place by using serial
commands or with the optional display/keypad. This can be needed if the
measuring environment contains high concentrations of interfering
chemicals.
Power-Up Purge
Purge is to start within 10 seconds from the power-up of the device. This
function can be disabled by using the serial line or the display/keypad.
0706-016
Figure 65
Activating Start-up Purge
1. Press
ON
to activate Start-up Purge. Pressing
OFF
disables the
function.
2. Press
EXIT
to return to the basic display.
PUR
With the
PUR
command you can enable or disable interval and power-up
Purge and set the interval for interval purge. The default purge interval is
24 hours.
It is not recommended to change these settings.
Type
PUR
and press
Enter
to proceed.
Example:
>pur
Interval Purge : ON ?
Interval : 1440 min ?
Power-up Purge : ON ?
Duration : 60 s ?
Settling : 240 s ?
Temperature : 180 'C ?
Temp. diff. : 0.5 'C ?
Trigger Purge : OFF ?
RH trigger : 20 %RH ?
>
