Orp Automatic Calibration; Conductivity Parameter; How To Get Conductivity - XS Instruments 70 Serie Manuel D'utilisation

P2.8 Reset of the ORP parameter
If the instrument does not work properly or incorrect settings have been made, confirm YES with the key
to return all the parameters of the ORP menu to the default settings.
IMPORTANT: The factory reset of the parameters does not delete the stored data
P2.9 Temperature calibration
All the instruments in this series are pre-calibrated for a correct temperature reading. However, if a
difference between the measured and the real one is evident (usually due to a probe malfunction), it is
possible to perform an offset adjustment of + 5°C.
Use the keys and
 ORP automatic calibration
Automatic calibration with 475 mV solution
 In ORP measurement mode
 The string "POINT ORP 475" appears on the display; the device requires 475 mV as calibration point.
Rinse the electrode with distilled water and gently dab it with paper towel. Dip the electrode in the

475 mV Redox buffer solution.
 When the solution is recognized and the signal is stable, the red stripes are replaced by the stability
icon .
 Press the key
 The actual measured value flashes on the display and then the beaker icon
left, indicating that the instrument is calibrated. The instrument automatically returns to measure
mode.
ATTENTION: Before proceeding with the sensor calibration operations, carefully consult
the safety data sheets of the substances involved:
 Redox standard solutions.
 STORAGE solution for ORP electrodes.
 Filling solution for Redox electrodes.

Conductivity Parameter

COND 70 Vio, PC 70 Vio
Connect the Conductivity probe to the BNC type connector marked in grey, while the temperature probe
must be connected to the RCA / CINCH Temp connector always on a grey background.
Conductivity is defined as the ability of the ions contained in a solution to conduct an electric current. This
parameter provides a fast and reliable indication of the quantity of ions present in a solution.
 ...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).
UM Serie 70Vio EN rev. 1 04.06.2020
to correct the temperature offset value and confirm with
press the key
as indicated by the string "PRESS OK".
22
to enter the calibration mode.
appears at the bottom
EN
.