With the PUR
command, you can enable or disable automatic and power-up chemical purge and set the purge
interval.
| If HMP155 is exposed to chemicals, Vaisala recommends performing chemical purge at least
once in 720 minutes (12 hours). If not, the interval can be longer. |
| CAUTION Do not modify the
Duration, Settling, and
Temperature settings unless instructed to do so. The sensor element may
be permanently damaged from overheating. |
Type PUR and
press ENTER to proceed. The maximum interval is 14400 minutes (10
days).
>pur
Interval Purge : OFF ?
Interval : 720 min ?
Power-up Purge : OFF ?
Duration : 240 s ?
Settling : 240 s ?
Temperature : 180 'C ?
>
| To activate the new interval settings immediately, reset the probe. |
| When chemical startup purge is
enabled, wait for 8 minutes after startup before taking measurements. The output channels are
locked for the first operation minutes to the initial measured values. |