Page 36 • Crystal Engineering Corporation
nVision.Reference.Recorder.Product.Specications
Model.Numbering.System
Temperature.(Operating.and.Storage)
Operating & Compensated . . . . -20°C to 50°C (4°F to 122°F).
Storage . . . . . . . . . . . . . . . . . . . . . . . -40°C to 75°C (40°F to 167°F).
Humidity
Temperature Range Humidity
-20 to 10°C . . . . . . . . . . . . . . . . . . . Uncontrolled
10 to 30°C. . . . . . . . . . . . . . . . . . . . 0 to 95% Relative
30 to 40°C. . . . . . . . . . . . . . . . . . . . 0 to 75% Relative
40 to 50°C. . . . . . . . . . . . . . . . . . . . 0 to 45% Relative
IP.Rating
IP67 rated enclosure (1m immersion for 30 min) per ISO 60529
Electrical.Connection
Electrical Connection . . . . . . . . .mini-USB B (environmentally sealed chassis connector).
nVision under USB power consumes less than 100 mA.
WARNING: The mini USB B connector shall not be used within the hazardous atmosphere.
It shall be used in the non-hazardous atmosphere with either “Safety Extra Low Voltage
Circuits” (SELV) or “Protective Extra Low Voltage Circuits” (PELV). The USB connector has a
Um of 6V.
SELV and PELV denitions per IEC60079-11 are:
Safety extra-low voltage (SELV): Extra-low voltage system (i.e. normally not exceeding 50 VAC
or 120 V ripple-free DC) electrically separated from earth and from other systems in such a way
that a single fault cannot give rise to an electrical shock.
Protective extra-low voltage (PELV): Extra-low voltage system which is not electrically separated
from earth but which otherwise satises the requirements for SELV. Note: A 50V center-tapped
earth system is a PELV system.
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