wtw Cond 7310 Operating Manual page 23

Cond 7310
Stability control
(AutoRead)
& HOLD function
ba75933e04 06/2013
The factor to calculate the total dissolved solids is set to 1.00 in the
factory. You can adjust this factor to meet your requirements in the
range 0.40 ... 1.00. The factor is set in the Measurement menu for
the parameter, TDS.
The stability control function (AutoRead) continually checks the stability of the
measurement signal. The stability has a considerable impact on the reproduc-
ibility of measured values.
The display of the measured parameter flashes.
 as soon as the measured value is outside the stability range.
 when the automatic Stability control is switched off.
You can activate or switch off the automatic Stability control function (see
section 6.1.1 C
HANGING THE SETTINGS FOR CONDUCTIVITY MEASURING CELLS
page 28).
1. Freeze the measured value with <AR>.
The [HOLD] status indicator is displayed.
The HOLD function is active.
You can terminate the Stability control function and the HOLD func-
tion with <AR> or <M> at any time.
2. Using <ENTER>, activate the Stability control function manually.
The [AR] status indicator appears while the measured value is
assessed as not stable. A progress bar is displayed and the display of
the measured parameter flashes.
The [HOLD][AR] status indicator appears as soon as a stable mea-
sured value is recognized. The progress bar disappears and the display
of the measured parameter stops flashing.
The current measurement data is output to the interface. Measurement
data meeting the stability control criterion is marked by AR.
You can prematurely terminate the Stability control function manu-
ally with <ENTER> at any time. If the Stability control function is
prematurely terminated, the current measurement data are output
to the interface without the AutoRead info.
3. Using <ENTER>, start a further measurement with stability control.
or
Release the frozen measured value again with <AR> or <M>.
The [AR] status display disappears. The display switches back to the
previous indication.
Conductivity
,
23