How To Get Conductivity; Setup For Conductivity Parameter - XS Instruments pH 60 VioLab Manuel D'utilisation

 ...how to get Conductivity?
The first Ohm's law expresses the direct proportionality in a conductor between the current intensity (I) and
the applied potential difference (V), while the resistance (R) represents its proportionality constant.
Specifically: V = R x I, the resistance is consequently R = V / I. Where R = resistance (Ohm) V = voltage (Volt)
I = current (Ampere). The inverse of the resistance is defined as conductance (G) G = 1 / R and is expressed
in Siemens (S). Measuring resistance or conductance requires a measuring cell, which consists of two
opposite charge poles. The reading depends on the geometry of the measuring cell, which is described
through the constant cell parameter C = d / A expressed in cm
the two electrodes in cm and A their surface in cm
conductivity (k), which is independent of the cell configuration, multiplying it by the cell constant.
k = G x C is expressed in S / cm even if the units of measurement mS / cm are in common use
(1 S/cm -> 10 3 mS/cm) e µS/cm (1 S/cm -> 10
 Setup for Conductivity parameter
In measure mode press button

 Use the directional keys to move to COND SETTINGS P3.0 and access the menu by pressing the key
.
Move with the keys

The table below shows the setup menu structure for the COND parameter; for each program, there are the
options that the user can choose and the default value:
Program Description
P3.1
CELL CONSTANT
P3.2 CALIBRATION METHOD
P3.3 REFERENCE TEMPERATURE
P3.4
TEMP COMPENSATION FACTOR
P3.6 CALIBRATION DATA
P3.7 SET DUE CAL
P3.8 RESET SETTINGS
P3.9 TEMPERATURE CAL
P3.1 Cell constant Selection
Choosing the right conductivity cell is a decisive factor for obtaining accurate and reproducible
measurements.
One of the most important parameters to consider is to use a sensor with the right cell constant
in relation to the solution under analysis.
The following table relates the sensor cell constant with the measurement range and the preferable
standard for calibration:
Access this setup menu to select the cell constant related to the sensor used:
0.1

 1 -default-
10

For each of the 3 selectable cell constants, the instrument stores the calibrated points. By selecting the cell
constant, the previously performed calibration points are automatically recalled.
UM Serie 60VioLab rev.0 20.05.2020
2 . The conductance is transformed into specific
6 µS/cm)
to access the SETUP menu.
and to select the program to access.
0.1 - 1 - 10
AUTOMATIC / CUSTOM
15 ... 30 °C
0.00 ... 10.00 %/°C
-
NO – HOURS - DAYS
YES – NO
YES – NO
23
-1 where d represents the distance between
Options Factory Default Settings
1
AUTOMATIC
25 °C
1.91 %/°C
-
NO
NO
-
EN