© National Instruments
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1-15
Mounting the cDAQ Chassis
You can use the cDAQ chassis on a desktop or mount it to a panel, wall, DIN rail, or rack. For
accessory ordering information, refer to the pricing section of the NI cDAQ-9138/9139 product
page at
ni.com
.
Note
The cDAQ chassis was designed and tested in multiple mounting
configurations. The varied mounting orientations or configurations can reduce the
maximum allowable ambient temperature and can affect the accuracy of C Series I/O
modules in the chassis. Visit
ni.com/info
and enter the Info Code
cdaqmounting
for more information about mounting and accuracy.
The following sections contain instructions for the mounting methods. Before using any of these
mounting methods, record the serial number from the side of the chassis. You may be unable to
read the serial number after you have mounted the chassis.
Caution
You must mount the chassis horizontally on a flat, vertical, metallic surface
using the NI panel mount kit, part number 781919-01, to achieve an allowable
operating ambient temperature of 45 to 55 °C. Mounting the chassis in a different
orientation or on a nonmetallic surface reduces the maximum allowable ambient
temperature and can affect the measurement accuracy of modules in the chassis.
Figure 1-9 shows the chassis mounted horizontally. Refer to the
section for complete panel mounting instructions.
Measure the ambient temperature at each side of the chassis, 63.5 mm (2.5 in.) from the
side and 50.8 mm (2 in.) forward from the rear of the chassis, as shown in Figure 1-10.
For more information about how different mounting configurations can cause
temperature derating, go to
ni.com/info
and enter the Info Code
cdaqmounting
.
Figure 1-9.
NI cDAQ-9138/9139 Mounted Horizontally with Panel Mount Kit
Up
NI cDAQ-9139
NI CompactDAQ
