Справочник Пользователя для National Instruments NI 9236

Substitution of components may impair 

suitability for Class I, Division 2.

For Zone 2 applications, install the system 

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

For Zone 2 applications, connected signals must 

be within the following limit:

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

μF max

This equipment has been evaluated as Ex nA IIC T4 equipment 
under DEMKO Certificate No. 07 ATEX 0626664X. Each module 
is marked 

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

locations. If you are using the NI 9235/9236 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.