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National Instruments 24-Bit Half/Full-Bridge Analog Input Module NI 9237 User Manual

Page 4

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NI 9237 Operating Instructions and Specifications

4

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Caution

Substitution of components may impair

suitability for Class I, Division 2.

Caution

For Zone 2 applications, install the system

in an enclosure rated to at least IP 54 as defined by
IEC 60529 and EN 60529.

Caution

For Zone 2 applications, connected signals must

be within the following limits:

Capacitance .......................... 0.2

μF max

Inductance ............................ 80 mH max

Special Conditions for Hazardous Locations Use in Europe

This equipment has been evaluated as EEx nC IIC T4 equipment
under DEMKO Certificate No. 03 ATEX 0324020X. Each module
is marked

II 3G and is suitable for use in Zone 2 hazardous

locations. If you are using the NI 9237 in Gas Group IIC hazardous
locations or in ambient temperatures of –40 °C

≤ Ta ≤ 70 °C, you

must use the device in an NI chassis that has been evaluated as
EEx nC IIC T4, Ex nA IIC T4, or Ex nL IIC T4 equipment.