Sample Measurement; Tds And Salinity Measurement - OHAUS STARTER 3100C Manuel D'instructions

STARTER 3100C Bench Conductivity Meter
o
When in Auto End Point Mode, the meter determines when the reading is stable
then displays and locks the reading or calibration value automatically, the reading
freezes and
on the display.
Place the conductivity sensor in the selected calibration standard, wait 10-15s, then press
.
The calibration icon
blinking during calibration measurement. The meter reaches endpoint automatically according to
the preselected auto-endpoint mode after the signal has stabilized.
When the calibration is finished, the standard value is displayed and stored; the measurement
icon blinks 3 times and disappears.
To finish the calibration and return to the sample measurement, press
constant is then shown on the display for 3 seconds.
Note:
To ensure the most accurate conductivity readings, you should verify your cell constant with a
standard solution before measurement and recalibrate if necessary. Always use fresh standards.
For STCON3 the normal cell constant range is 1.50 – 2.00. (e.g. 1.71 /cm) if the cell constant is
outside the range due to an improper calibration, you may need to recover factory settings (see
5.4), then repeat calibration.
4.2

Sample measurement

Place the conductivity sensor in the sample, wait 10-15s, then press
measurement. The measurement icon
blinking during measurement and the display shows the conductivity of the sample.
When it reaches endpoint (auto endpoint or manual endpoint), you can record the result.
Stability criterion for conductivity measurement: The sensor input signal of the meter may not
change by more than 0.4% from the measured average conductivity of the probe in 6 seconds.
4.3

TDS and Salinity measurement

To perform a TDS or salinity measurement, follow the same procedure as for a conductivity
measurement. Press
blinks 3 times then disappears;
and the measurement icon
appears on the display. The measurement icon is
to switch between conductivity and TDS measurement mode.
blinks 3 times and freezes
appear on the display. The icon
EN-11
is
. The cell
to start the