System Control; Menu; Setting The Limiting Value For The Conductivity - Thermo Scientific Barnstead Smart2Pure 12 UV/UF Operating Instructions Manual

13. System control

13.1 Menu

The menu consists of three sub-points: Switching to the dual mode together with selection of
the measurement unit for the conductivity measurement, setting the limiting value for the con-
ductivity and setting the limiting value for the temperature.
Mono / dual measurement mode:
Mono measurement mode: In this mode only the conductivity is displayed.
Dual measurement mode:
A single press on the menu-key brings the measurement mode that has last been set to display.
Use the up- or down-key to switch the permanent display of the conductivity and the alternating
display of conductivity/temperature. The display shows "c" for conductivity or "ct" for conductiv-
ity/temperature.
Switching between the measurement units µS/cm or MΩxcm can also now be made here. The
unit selected must be confirmed with Enter. The corresponding LED indicates which unit is op-
erative.
The following combinations are hereby possible:
ct / MΩxcm
c / MΩxcm
ct / µS/cm
c / µS/cm

13.2 Setting the limiting value for the conductivity

Setting range: 0.055 - 30 µS/cm
Basic setting: off
Important note: The limiting value can only be entered in µS/cm.
Two presses on the menu-key (the red "Cond." LED lights up) enable the limiting value for the
conductivity to be set. Use the up- and down-keys to make the setting. The particular position
that is to be changed can be selected with the Enter-key and is shown flashing in the display.
When the wanted value has been reached, be sure to confirm it with Enter.
Should a value of 30.1 µS/cm be set, then the word OFF appears in the display and limiting
value evaluation is switched off.
When the limiting value of the conductivity is exceeded (Limit value Conductivity), then the red
"Cond." LED lights up and the exceeding is additionally signalled by a buzzer. The fault mes-
sage can be given out via the optional printer.
Thermo Scientific Barnstead Smart2Pure
The temperature can be read as long as the Enter-key
is pressed .
In this mode, temperature and conductivity are shown in
2-second alternation. The LED for the unit switches with the
display.
up/down
Ultrapure water system
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