Giorgio Bormac 8+ Série Manuel D'utilisation page 24

Conductance is transformed into a specific conductivity (k), which is independent of the cell configuration,
multiplying it by the cell constant. k = GxC is express in S/cm even if measurement units "mS/cm" (1 S/cm
-> 10 3 mS/cm) and "µS/cm" (1 S/cm -> 10
• Configuration of setup menu for Conductivity parameter
• In measurement mode press "
• Use and keys to scroll until "COND/TDS" menu and press
Use and keys to move and then select the program you want to edit.
•
The table below shows the structure of the setup menu for the COND/TDS parameter, for each program
there are the options that the user can choose and the default value.
Program Description
P2.2 Cell constant
P2.3 Calibration Solution
P2.4 Due calibration Cond
P2.5 Last calibration Cond data
P2.6 Reference temperature for Cond
P2.7 Temperature compensation factor
P2.8
Temperature calibration
P2.9 TDS factor
P2.10 Restore factory default
* Function available only for 80+ Series
P2.2 Cell Constant
Choosing the right conductivity cell is a decisive factor for obtaining accurate and reproducible
measurements. One of the fundamental parameters to consider is to use a sensor with the correct cell
constant in relation to the solution being analysis.
The following table relates the sensor cell constant with the measuring range and the standard with which
it is preferable to calibrate.
Cell Constant
Conductivity Standard (25°)
Measuring Range
Enter this setup menu to set the cell constant for the sensor you are using:
0.1
•
• 1 -default-
10
•
The cell constant in use appears on the lower left display . For each of the 3 selectable cell constants the
device stores the calibrated points. Then, selecting the cell constant, the calibration points previously
executed are automatically recalled
P2.3 Calibration Solution
Enter this setup menu to set the Automatic or Manual buffer conductivity standard calibration.
Standard: -default- the device automatically recognizes max. 4 of the following standard
•
84 µS/cm, 1413 µS/cm, 12.88 mS/cm and 111.8 mS/cm.
• User: the device can calibrate with one point defined by user.
Note: To obtain accurate results it is advisable to calibrate the device with standards close to the theoretical
value of the solution to analyze.
P2.4 Due calibration Cond
Enter this menu to set a calibration expiration, this option is essential in GLP protocol.
• No calibration expiration is set by default, use
pass between two calibrations and confirm with
UM Serie 880 EN rev.2 30.07.2020
6 µS/cm) are commonly used.
MENU" key to enter SETUP menu.
0.1 - 1 - 10
Standard / User
No – 1...99h – 1.99d
View / Print
15...30 °C
0.0...10.0 %/°C – Ultrapure water*
YES – NO
0.40...1.00
YES – NO
0.1
84 µS 1413 µS
0 – 200 µS 200 – 2000µS
and
key.
23
key to confirm.
Options Factory default
1
12.88 mS
2 – 20 mS 20 – f.s. mS
keys to choose days or hours which must
1
Standard
No
View
25 °C
1.91 %/C°
No
0.71
No
10
111.8 mS
EN