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NI 9144 User Guide and Specifications
Special Guidelines for Marine Applications
Some products are Lloyd’s Register (LR) Type Approved for marine (shipboard) applications.
To verify Lloyd’s Register certification for a product, visit
ni.com/certification
and
search for the LR certificate, or look for the Lloyd’s Register mark on the product label.
Caution
In order to meet the EMC requirements for marine applications, install the
product in a shielded enclosure with shielded and/or filtered power and input/output
ports. In addition, take precautions when designing, selecting, and installing
measurement probes and cables to ensure that the desired EMC performance is
attained.
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.
Figure 2.
NI 9144 Chassis, Bottom View with Dimensions
29.0 mm
(1.14 in.)
286.4 mm
(11.28 in.)
3
.2 mm
(0.1
3
in.)
C
ab
ling Cle
a
r
a
nce
50.8 mm (2.00 in.)
48.4 mm
(1.9 in.)
58.9 mm
(2.
3
2 in.)
