Grounding In The Interface 1000 - Gamry Instruments Interface 1000 Operator's Manual

Chapter 1: Safety Considerations--Grounding in the Interface 1000
The Interface 1000'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.
The Interface 1000 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 Interface 1000 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
are uncertain what AC line cord to use.

Grounding in the Interface 1000

The circuitry and the metal case of the Interface 1000 are not connected to an earth ground. If they were
connected to earth ground, it would compromise the Interface 1000's ability to make measurements in
electrochemical cells that contain earth-grounded metal. A few examples of such cells include autoclaves,
metallographic stress apparatus, and detectors for capillary electrophoresis.
Most electrochemical cells are isolated from earth ground, so isolation of the Interface 1000 from earth is
not required. In these cases, connection of the Interface 1000 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 Interface
1000 easily implements this connection. Simply run a wire from this binding post to a suitable source of
earth ground. A black 1.2-meter wire is provided with the Interface 1000 to facilitate this connection.
Sources of earth ground include
• Most metal water pipes,
• The chassis of most electronic apparatus (which are generally earth-grounded), and
• The protective 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.
This connection of the Interface 1000 to an earth ground is not a "Protective Earth Ground" as defined in
EN 61010. The Interface 1000 is safe in the absence of this connection.
This binding post is not intended for any use other than connecting the Interface 1000 to an earth ground
to improve shielding against noise. Connecting this binding post to a hazardous voltage can create a
significant safety hazard.
Warning: Do not connect the chassis ground binding post to any voltage other than earth
ground. An improper connection can create a safety hazard, which could result in personal injury or death.
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