VIO 7 Vio, Инструкция по эксплуатации

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Rev. 1 20.12.2019
EN
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second screen: CALIBRATION DATE and TIME (if a GLP instrument is used) and beakers indicating
the buffers used;
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third screen: OFFSET value of the electrode expressed in mV;
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fourth and possibly fifth screen: Slope% in the measuring range (one Slope% only if two calibration
points are performed, two Slope% if three points are performed).
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From the moment the DHS electrode is recognized, the device use the calibration stored on the probe.
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The icon on the display indicates that the connection was successful.
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If the calibration is satisfactory (see the calibration data in menu P.1.6) the electrode is ready to start
the measurements. Otherwise recalibrate the electrode; the data will be updated automatically.
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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.
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When the electrode is disconnected, a message on the display informs the user of the deactivation of
the sensor; the device use its previous calibration stored in the device, no data is lost!
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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.
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Errors during calibration
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NOT STABLE: The button has been pressed with still unstable signal. Wait for the icon to
appear to confirm the point.
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WRONG BUFFER: The buffer you are using is polluted or not part of the recognized families.
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SLOPE OUT OF RANGE: The slope of the sensor calibration line is out of the acceptable range 80 - 120%.
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CALIBRATION TOO LONG: the calibration has exceeded the time limit, only the points calibrated up to
that moment will be kept.
mV Parameter
pH 7 Vio; PC 7 Vio
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In measurement mode press and move to the mV parameter indicated by the icon
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The display shows the measurement in mV of the pH sensor.
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Scroll on the display of four red bands means that the measurement is not yet stable.
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Consider the measurement truthful only when the stability icon appears .
Note: This measurement is recommended to evaluate the sensor efficiency
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; instead, 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 going for automatic calibration to a predefined point. The
instrument automatically recognizes the Redox solution 475 mV / 25 ° C; contact the local distributor to
proceed with the purchase.
The instrument can correct the sensor offset by + 75 mV.