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Rev. 1 24/01/2020

clinical thermometer). If present, open the side cap.

• Dip the electrode in the sample, while keeping it slightly stirred.

• The scrolling on the display of four red bands means that the measurement is not stable yet.

• Consider the measurement truthful only when the stability icon appears .

Example of an unstable measurement Example of stable measurement

• After the measurement, wash the electrode with distilled water and preserve it in the appropriate

storage solution (STORAGE).

• Never store the sensors in ANY TYPE of water OR DRY!

• It is a useful tool for obtaining accurate measurements always having on the display the indication of

the buffers used for calibration and the possibility of consulting the calibration data, at any time, or

entering the expiry date.

• Sensors with DHS technology

The electrodes equipped with DHS technology can save a calibration curve within their memory. The

calibrated sensor is automatically recognized by any instrument enabled for DHS recognition and acquires

its calibration.

• Connect the DHS electrode to the BNC and RCA connectors of the instrument.

• The device automatically recognizes the chip; the following screens scroll on the display:

• First screen: sensor identification name and production batch.

• Second screen: CALIBRATION DATE and TIME and beakers indicating the buffers used.

• Third screen: OFFSET value of the electrode expressed in mV.

• 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).

• When the DHS electrode is recognized, the active calibration on the instrument becomes the one of the

sensor.

• The icon on the display indicates that the connection was successful.

• 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.

• The DHS electrode calibrated with a pH 70 Vio or PC 70 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

XS Instruments PC 70 Vio User Manual

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