Vaisala HMP155 - Manual (Page 37)

Chapter 4 ________________________________________________________________ Operation
VAISALA _______________________________________________________________________ 35
UNIT [M/N]
Use the UNIT command to select metric or non-metric output units.
UNIT [M/N]
where
M = Metric units
N = Non-metric units
Example:
>unit n
Units : non metric
>
TIME
To set or display the current time, use the TIME serial line command.
TIME [HH MM SS]
Example:
> time 12 00 00
Time : 12:00:00
>
When you set the current time for the probe with the TIME command,
the time will be displayed as long as the probe is turned on. The time
setting will not be stored in any memory. At reset or when the probe is
turned off, the time will go back to 00:00:00.