wtw pH 171 2K, Operating Manual

Page: 111 / 160

Parameterization
115
Parameterization of mean time for daily MIN/MAX values
(ST / 2K / R / RS models)
With the MIN/MAX function the mean time for daily minimum and daily maximum values can
be set. During a period of 24 h (1 day) each the measured values are averaged every 1, 5, or 15
minutes (depending on selection). The computed mean value is stored or compared with already
stored extreme values of the current 24 hour period respectively. If the new value is higher or
lower than the stored maximum or minimum value it overwrites the stored value.
The shorter the time for averaging is set the better short peaks can be recorded.
The daily MIN/MAX values for the last 4 days remain stored with the corresponding time and can
be recalled in turn in the reading mode scrolling from the latest to the oldest value (see "Queries"
in the operation level).
Chart:
Submenu Selection
PARA MIN/MAX TIME 1 min *)
TIME 5 min
TIME 15 min
*) Ex-factory condition
Setting:
Submenu "PARA MIN/MAX".
With enter submenu
"PARA MIN/MAX".
With select storing interval (see
chart).
With accept and go on to
submenu "PARA UL/LL".