Vaisala HUMICAP HMP155, User Manual, Page: 52 / 102

When you set the current time for the probe with the TIME command, the time is displayed
when the probe is turned on. The time setting is not be stored. At reset or when the probe is
turned off, the time returns to 00:00:00.
Example
> time 12 00 00
Time : 12:00:00
>
4.5.3 UNIT command
Use the
UNIT
command to select metric or non-metric output units.
UNIT M/N
Parameter Description
M
Metric units
N
Non-metric units
Example
>unit n
Units : non metric
>
4.6 Chemical purge commands
4.6.1 PUR command
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.
HMP155 User Guide M210912EN-D
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