Metrohm 914 pH / Conductometer Bedienungsanleitung PDF herunterladen (Seite 24)

3.2 Power supply

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pH Meter/Conductometer

If no power socket is available, you can also charge your instrument via

the USB interface of a computer (PC) or a car charger adapter.

NOTE

Charging capacity

The charging process requires a minimum capacity of 500 mAh.

￭ Use a USB hub with external power supply or a suitable USB connec-

tor on the computer (PC).

￭ For mobile charging of the battery, use a car charger adapter from

the Metrohm accessories (6.2166.500).

1. Connect the USB cable first to the computer and then to your instru-

ment.

2. Then switch on the instrument.

3. As soon as the battery is fully charged, disconnect the USB cable first

from the instrument and then from the computer.

NOTE

Battery condition

The battery performance may deteriorate over time. If the operating

times are much shorter than usual, take the instrument to the closest

Metrohm Service to have the battery replaced.

3.2.2 Operation with power supply unit

You can operate the pH Meter/Conductometer with the supplied

power supply unit without restrictions.

CAUTION

Measuring with power supply unit connected

Inappropriate power supply units may influence and interfere with the

measuring signal.

Use only the supplied power supply unit (6.2166.100) for measuring.

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Metrohm 914 pH / Conductometer Bedienungsanleitung Seite 24