Environmental Conditions - Extech Instruments 7630 Operation Manual

appropriate AC power source, the cable will connect the chassis to earth ground. The type of
power cable shipped with each instrument depends on the country of destination.
Return Connection
The output power supplies of this instrument are referenced directly to earth
CAUTION
ground. Any conductor that completes a path between the high voltage and
earth ground will form a completed circuit.
When the instrument Return is grounded, any internal and external stray leakage will be
monitored due to currents that flow from High Voltage to earth ground (such as from HV to
the chassis of the instrument). This current is inherent and will cause errors when trying to
monitor very low leakage currents in the microamp range.

2.2.3 Environmental Conditions

Operation Environment
This instrument may be operated in environments with the following limits:
Temperature............. 0° - 40° C
Relative humidity ......20 - 80%
Altitude ..................6,560 feet (2,000 meters)
Storage and Shipping Environment
This instrument may be stored or shipped in environments with the following limits:
Temperature.................- -40°- 75°C
Altitude........................25000 feet (7,620 meters)
The instrument should also be protected against temperature extremes that may cause
condensation within the instrument.
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