Operation With Earth-Grounded Cells And Auxiliary Apparatus; Temperature And Ventilation - Gamry Reference 600+ Operator's Manual

Operation with Earth-Grounded Cells and Auxiliary Apparatus

As described above, the Reference 600+ circuitry is isolated from earth ground, allowing it to make
measurements on cells that include an earth ground. This ground isolation is often called floating
operation. Cells with earth ground include many autoclaves, pipelines and storage tanks, and many fuel
cell systems.
Connection of the Reference 600+ to auxiliary apparatus will often earth-ground the Reference 600+
destroying its ability to float and make measurements on earth-grounded cells. Connection of the Monitor
BNCs to an oscilloscope is an example where the instrument is earthed.
The User I/O connector can be connected to earth-grounded apparatus without earth-grounding the
Reference 600+, if the cabling is done carefully. The metal shell on the Reference 600+ User I/O
Connector is connected to the instrument's chassis which is a floating ground. In a system that needs
isolation from earth ground, the shield of your I/O cable must not connect the D-connector's metal shell to
earth ground. Reference all user I/O signals to pin 6 of the D-connector, which is earth ground on the
Reference 600+.
Caution:
cables to your I/O Connector. We do not recommend use of standard 15-pin shielded cables with this
connector. Custom cables with the shield connected to pin 6 of the D-connector are preferred.
Warning:
earth ground. An improper connection can create a safety hazard, which could result in personal injury
or death.
The Reference 600+ contains spark-gap surge suppressors that limit the voltage difference between the
Reference 600+'s chassis ground and earth ground to about 90 V. These surge suppressors are not part of
the safety mechanisms in the Reference 600+. Instead they are present to limit the possibility of improper
instrument operation or instrument damage caused by electrostatic discharge (static electricity) and other
surge events such as lightning.

Temperature and Ventilation

Your Reference 600+ Potentiostat/Galvanostat/ZRA was designed for indoor use at ambient temperatures
between 0°C and 45°C.
The Reference 600+ uses forced air-cooling to keep its electronic components within their operating
temperature range. Air is drawn into the Reference 600+ chassis through slots located on the sides of the
chassis near the front panel. The air exits through the two fans at the rear of the unit.
Floating operation of the Reference 600+ can be compromised by improper
Do not connect the chassis ground binding post to any voltage other than
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