Errors During Calibration; Mv Parameter; Orp Parameter (Redox Potential); Orp Parameter Setup - Dostmann pH 7 Vio Manuel D'utilisation

The DHS electrode calibrated with a pH 7 Vio or PC 7 Vio device is ready to be used on any pH meter
•
enabled for DHS recognition and vice versa.
When the electrode is disconnected, a message on the display informs the user of the deactivation of
•
the sensor; the instrument regains its previous calibration and no data is lost!
• The DHS electrode does not require batteries and if it is used on pH meters that are not enabled to
recognize the chip, it works as a normal "analog" electrode.

• Errors during calibration

NOT STABLE: The button
•
appear to confirm the point.
WRONG BUFFER: The buffer is polluted or not part of the recognized families.
•
SLOPE OUT OF RANGE: The slope of the sensor calibration line is out of the acceptable range 80 -
•
120%.
CALIBRATION TOO LONG: The calibration exceeded the time limit: only the points calibrated up to
•
that moment will be kept.

mV Parameter

pH 7 Vio; PC 7 Vio
• In measure mode press
The display shows the measurement in mV of the pH sensor.
•
Scroll on the display of four red bands
•
• Consider the measurement truthful only when the stability icon appears

ORP Parameter (Redox Potential)

pH 7 Vio; PC 7 Vio
ORP sensors can be used on this series of devices to measure the Oxide-Reduction potential.
Connect the Redox electrode to the BNC type connector marked in green; if necessary, connect the
temperature probe to the RCA / CINCH Temp connector always marked with a green background.
It is possible to calibrate the sensor offset by performing automatic calibration on a predefined point. The
instrument automatically recognizes the Redox solution 475 mV / 25 °C; contact the local distributor to
proceed with the relevant purchase.
The instrument can correct the sensor offset by + 75 mV.

• ORP Parameter Setup

• In measure mode press the key
• Use the directional keys to move to ORP SETTINGS P2.0 and access the menu by pressing the key
.
• Move with keys
Series 7 Vio ENG Version 2.0 April 2020
was pressed with still unstable signal. Wait for the icon
and move to the mV parameter indicated by the icon
means that the measurement is not yet stable.
to access the SETUP menu.
and to select the program to access.
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