Selecting A Standard; Performing A Calibration - OHAUS STARTER 3100M Manuel D'instruction

STARTER 3100M Bench Meter

Selecting a standard

4.2.1
When using the STARTER 3100M conductivity meter, you have to select a standard for calibration
(see 3.3).
Press and hold the
unit and value. Then the current standard blinks. Use
standards, press
The 5 predefined standards are:
10 µS/cm 84 µS/cm
Tables for automatic temperature compensation are programmed in the meter for each standard
(see appendix).

Performing a calibration

4.2.2
When performing calibration, Ohaus recommends using Auto End Point Mode. After powering
the meter on, be sure the top of the screen shows
Mode.
About Auto or Manual End point Mode, please see 3.2.1.
Place the conductivity electrode in the selected calibration standard solution, 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
cell 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.
enter setup mode, after press
to confirm. Press
500 µS/cm
and the measurement icon
or
to leave the setup mode.
1413 µS/cm 12.88 mS/cm
to ensure the meter is in Auto End point
appear on the display. The icon
EN
to confirm the temperature
buttons to select the
. The cal. data--
15
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is