wtw Multi 3410 Operating Manual page 62

Operation
Selecting the
displayed
measured parameter
Freezing the measured
value (HOLD function)
Stability control
(AutoRead )
62
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 Measurement menu for the
parameter, TDS.
With the HOLD function, you can freeze the current measured value.
The displayed measured value stops changing until you switch the
HOLD function off.
1 Freeze the measured value with <AR>.
The [HOLD] status indicator is displayed.
Note
If the HOLD function is active, you can, e.g. start a manual measure-
ment with stability control.
2 Release the frozen measured value again with <AR>.
The HOLD function is switched off.
The [HOLD] status display disappears.
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 manually at any time, irrespective of
the setting for automatic Stability control (see page 33) in the Measure-
ment menu.
1 Freeze the measured value with <AR>.
The [HOLD] status indicator is displayed.
Multi 3410
ba75863e02 12/2009