Chapter 1 -- Safety Considerations--Temperature and Ventilation
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operation. Cells with earth ground include many autoclaves, pipelines and storage tanks, and many fuel
cell systems.
Connection of the Interface 1000 to auxiliary apparatus will often earth ground the Interface 1000
destroying its ability to float and make measurements on earth grounded cells. Connection of the Monitor
Connector 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
Interface 1000, if the cabling is done carefully. The Metal Shell on the Interface 1000 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 a User I/O cable must not connect the D-connector's metal shell to earth
ground. All User I/O signals should be referenced to pin 6 of the D-connector, which is an earth ground
on the Interface 1000.
Caution
Floating operation of Interface 1000 can be compromised by improper cabling to the
User 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.
Temperature and Ventilation
Your Interface 1000 Potentiostat/Galvanostat/ZRA was designed for indoor use at ambient temperatures
between 0°C and 45°C.
The Interface 1000 uses forced air-cooling to keep the Interface 1000 components within their operating
temperature range. Most of the air needed to cool the Interface 1000 enters the chassis through holes in its
bottom plate. Some air also enters the chassis from small slots on the right side of the chassis (as viewed
from the front of the instrument).
The fan within the Interface 1000 has two operating speeds with different audible noise levels. The
Interface 1000 normally operates with the lower speed, quieter fan setting. The fan switches to a higher
speed when the Interface 1000's internal heat-sink gets hotter than 50 °C.
The cooling air flows through a heat sink mounted inside the chassis. The air exits through a large array of
slots on the left side of the instrument.
Caution
Do not block the airflow into or out of the Interface 1000 chassis. The circuitry is
thermally protected so over temperature will cause the instrument to enter a shut
down state. If shut down occurs during data acquisition experimental data could be
lost. Running the Interface 1000 without adequate cooling could also shorten the
time to failure of some of the circuitry.
Be careful when operating the Interface 1000 in an enclosed space (such as an enclosed relay rack or
NEMA enclosure). The temperature within the enclosure must not exceed 45°C. You may need to provide
ventilation holes or even forced air-cooling for the enclosed space if excessive temperature rise occurs.
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