Xylem HandyLab 680 - Manual (Page 78)

Operation HandyLab 680
78 ba77041e01 03/2014
Selecting the
displayed
measured parameter
You can switch between the following displays with <M>:
 Conductivity [ μS/cm] / [mS/cm]
 Resistivity [ Ω·cm] / [kΩ·cm] / [MΩ·cm]
 Salinity SaL [ ]
 Total dissolved solids TDS [mg/l] / [g/l]
The factor to calculate the total dissolved solids is set to 1.00 in the fac-
tory. You can adjust this factor to meet your requirements in the range
of 0.40 to 1.00. The factor is set in the menu for the parameter, TDS.
Freezing the measured
value (HOLD function)
With the HOLD function, you can freeze the current measured value.
The displayed measured value stops changing until you switch the
HOLD function off.
Note
If the HOLD function is active, you can, e.g. start a manual measure-
ment with stability control.
Stability control
(AutoRead )
The stability control function (AutoRead) continually checks the stability
of the measurement signal. The stability has a considerable impact on
the reproducibility of measured values. The display of the measured
parameter flashes until a stable measured value is available.
You can start the Stability control function manually at any time, irre-
spective of the setting for automatic Stability control (see section 4.4.3)
in the System menu.
15.03.2014 08:00 Info
1 Freeze the measured value with <AR>.
The [HOLD] status indicator is displayed.
2 Release the frozen measured value again with <AR>.
The HOLD function is switched off.
The [HOLD] status display disappears.