Gamry Instruments IMX8, Operator'S Manual

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Safety Considerations
8
AC Mains Connection to the Power Brick
The IMX8 Multiplexer does not connect directly to an AC Mains supply. Instead, the mains are connected to
desktop AC adapter (power brick), which outputs 48 V DC, which in turn powers the IMX8 Multiplexer.
The IMX8 Multiplexer is normally provided with an AC line cord suitable for your location. This AC line cord
connects the AC mains to the AC power adapter. If your IMX8 Multiplexer has been provided without an AC
line cord, or a cord that is not compatible with your local AC mains socket, obtain a line cord certified for use
in your country. Contact your local Gamry Representative or e-mail to
techsupport@gamry.com if you are
uncertain what AC line cord to use.
Grounding in the IMX8 Multiplexer
Most of the IMX8 Multiplexer’s circuitry and its metal case are connected to earth ground via the AC adapter.
The cell connections to the Active cell can be isolated from earth ground if the System Potentiostat is isolated
from earth. Inactive cells that are Open (not in the Shorted or Local Potentiostat modes) will also be isolated
from earth ground.
Most electrochemical cells are isolated from earth ground, so isolation of the IMX8 Multiplexer and System
Potentiostat from earth is not required. In these cases, connection of the System Potentiostat chassis to an earth
ground may lower the noise seen in an electrochemical test. A Chassis Ground banana jack on the rear panel
of the System Potentiostat easily implements this connection. Simply run a wire from this binding post to a
suitable source of earth ground. The black 1.2-meter wire usually provided with Gamry Potentiostats facilitates
this connection.
This connection of the System potentiostat to an earth ground is not a “Protective Earth Ground” as defined in
EN 61010. The IMX8 Multiplexer is safe in the absence of this connection.
Sources of earth ground include:

Most metal water pipes,

the chassis of most electronic apparatus (which are generally earth-grounded), and

the earth ground terminal of an AC mains power plug.
We recommend that you discuss grounding with an electrical or electronics professional prior to making
this earth-ground connection.
The IMX8 Multiplexer’s AC Adapter is rated for operation from 100 to 240 V AC, 47 to
63 Hz. It should therefore be useful throughout the world.
Warning:
Use only Gamry-approved DC power sources with your IMX8 Multiplexer. Other
power sources may alter the performance and/or safety characteristics of the IMX8 Multiplexer.