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Chapter 1 Getting Started with the cDAQ Chassis
Special Conditions for Hazardous Locations Use in Europe
This equipment has been evaluated as Ex nA IIC T4 Gc equipment under DEMKO 12 ATEX
1202658X. Each such chassis is marked II 3G and is suitable for use in Zone 2 hazardous
locations, in ambient temperatures of:
•0°C Ta 55 °C for the NI cDAQ-9181/9191
-20 °C Ta 55 °C for the NI cDAQ-9184/9188
Caution You must make sure that transient disturbances do not exceed 140% of the
rated voltage.
Caution The chassis shall be mounted in an ATEX certified enclosure with a
minimum ingress protection rating of at least IP 54 as defined in IEC/EN 60529 and
used in an environment of not more than Pollution Degree 2.
Caution The enclosure must have a door or cover accessible only by the use of a
tool.
Electromagnetic Compatibility Guidelines
This product was tested and complies with the regulatory requirements and limits for
electromagnetic compatibility (EMC) stated in the product specifications. These requirements
and limits provide reasonable protection against harmful interference when the product is
operated in the intended operational electromagnetic environment.
This product is intended for use in industrial locations. However, harmful interference may
occur in some installations, when the product is connected to a peripheral device or test object,
or if the product is used in residential or commercial areas. To minimize interference with radio
and television reception and prevent unacceptable performance degradation, install and use this
product in strict accordance with the instructions in the product documentation.
Furthermore, any modifications to the product not expressly approved by National Instruments
could void your authority to operate it under your local regulatory rules.
Caution To ensure the specified EMC performance, operate this product only with
shielded cables and accessories.
Caution To ensure the specified EMC performance, the length of any I/O cable
connected to a BNC PFI port must be no longer than 30 m (100 ft).
Caution To ensure the specified EMC performance, do not connect the power input
to a DC mains supply or to any supply requiring a connecting cable longer than 3 m
(10 ft.). A DC mains supply is a local DC electricity supply network in the
infrastructure of a site or building.
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