NI 9144 User Guide and Specifications
4
ni.com
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.
Special Conditions for Hazardous Locations Use
in Europe
This equipment has been evaluated as Ex nA IIC T4 equipment under
DEMKO Certificate No. 07 ATEX 0626664X. Each chassis is marked
II 3G and is suitable for use in Zone 2 hazardous locations, in ambient
temperatures of –40
≤
Ta
≤
70 °C.
Special Conditions for Marine Applications
Some chassis are Lloyd’s Register (LR) Type Approved for marine
applications. To verify Lloyd’s Register certification, visit
ni.com/
certification
and search for the LR certificate, or look for the Lloyd’s
Register mark on the chassis.
Mounting the NI 9144 Chassis
You can mount the chassis in any orientation on a 35 mm DIN rail or on a
panel. Use the DIN rail mounting method if you already have a DIN rail
configuration or if you need to be able to quickly remove the chassis. Use
the panel mount method for high shock and vibration applications.
Caution
Your installation must meet the following requirements for space and cabling
clearance:
•
Allow 25.4 mm (1 in.) on the top and the bottom of the chassis for air circulation.
•
Allow 50.8 mm (2 in.) in front of C Series I/O modules for cabling clearance for
common connectors, such as the 10-terminal, detachable screw terminal connector, as
shown in Figure 2.
