Millipore Milli-Q Plus Manuel d'utilisateur télécharger pdf (Page 48)

INSTALLATION

Milli-Q Academic / Academic A10 40

4-14 HOW TO SHOW NON-TEMPERATURE COMPENSATED RESISTIVITY

OR CONDUCTIVITY VALUES

It is possible to show non-temperature compensated Resistivity or non-temperature compensated Conductivity

Product Water values on the LCD.

WHAT IS TEMPERATURE COMPENSATION?

Suppose the feedwater to a Milli-Q is 15C. The Milli-Q Resistivity Sensor will measure a Resistivity Value of

31.756 M.cm (or a Conductivity of 0.032 S/cm). This is the actual Resistivity of the Milli-Q Product Water at

15C.

The Milli-Q will perform a temperature compensation for the Resistivity measurement. It will be compensated to a

measurement that would be seen at 25C.

When a Resistivity measurement of 31.756 M.cm @ 15C is temperature compensated to a measurement at

25 C, then the Milli-Q will display ‘18.2 M.cm @ 25C’.

Temperature compensation is a way of ‘standardising’ Resistivity or Conductivity to measurements

that would be seen if the water temperature was 25C.

Follow the steps below to display non-temperature compensated Resistivity or Conductivity values.

 Choose whether you want to display Resistivity (M.cm) or Conductivity (S/cm). See Section 4-13 for

information on how to change between these types of measurement units.

 Press the MENU Keypad button for about 2 seconds. The LCD will change as shown here:

 You have entered the ‘Customer Service Software’ of the Milli-Q.

If you do not see this display

, then turn off, then on the system power.

When the LCD shows PRE OPERATE and RECIRCULATION, press the

STANDBY/OPERATE Keypad button for about 2 seconds. This will place

the Milli-Q into STANDBY Mode. Then press the STANDBY/OPERATE

Keypad button again. The Milli-Q will now be in PRE OPERATE Mode.

Press the MENU Keypad button again for 2 seconds to enter the Customer

Service Software.

PRESET V OL U

0.00 l

P R E O P E R A T E

OPERATE / STANDBY

MEASURE

CLEANING MENU

POWER

SERVICE

LARM

Press MENU for

about 2 seconds

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Millipore Milli-Q Plus Manuel d'utilisateur Page 48