Hanna-instruments HI 9828 Bedienungsanleitung PDF herunterladen (Seite 10)

Cigarette lighter supply

To recharge

HI9828HI9828

HI9828 from a vehicle cigarette lighter supply, use

HI710046HI710046

HI710046.

• Simply connect the cable to the meter and to the car’s cigarette lighter.

• The message “Battery charging in progress” appears on the display, followed

by the battery symbol.

• A complete batteries recharging will last about 14 hours.

NONO

TETE

TE Batteries can also be recharged with the meter ON; if the auto-off

feature is enabled, the meter turns off automatically after the set time.

1.5 PROBE DESCRIPTION & INSTALLATION

HI9828HI9828

HI9828 is supplied with the multisensor probe for dissolved oxygen, tempera-

ture, conductivity, pH and redox measurements.

1.5.1 Sensors description

The galvanic D.O. sensor allows to have stable readings in

a few seconds. The thin permeable membrane isolates the

sensor elements from the testing solution, but allows oxygen

to enter. Oxygen that passes through the membrane causes

a current flow, from which the oxygen concentration is de-

termined. Before installing the probe, it is necessary to acti-

vate the D.O. sensor; see paragraph 1.5.3 for details.

The conductivity sensor uses the 4-ring technology that al-

lows stable and linear readings without any interference in

the whole range.

The pH/ORP sensor features a glass membrane for pH read-

ings and a Pt sensor for redox measurements.

To avoid clogging problems and ensure a fast response, the

pH bulb must be kept moist at any time. Store the electrode

with few drops of

HI70300HI70300

HI70300 storage solution in the protec-

tive cap.

The EC sensor also works as matching pin

and must be always mounted to have cor-

rect pH readings.

For correct redox measurements, the surface of the elec-

trode must be clean and smooth, and a pretreatment pro-

cedure should be performed to ensure quick responses.

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