National Instruments PXI EXPRESS PXIe-1095 User Manual - page 19
2-2
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Chapter 2
Installation and Configuration
product, the mains connector to the premise wiring must be disconnected. Dangerous
voltages may be present under certain conditions; use extreme caution.
•
Explosive Atmosphere
—Do
not
operate the chassis in conditions where flammable gases are
present. Under such conditions, this equipment is unsafe and may ignite the gases or gas fumes.
•
Part Replacement
—Only service this equipment with parts that are exact replacements,
both electrically and mechanically. Contact National Instruments for replacement part
information. Installation of parts with those that are not direct replacements may cause
harm to personnel operating the chassis. Furthermore, damage or fire may occur if
replacement parts are unsuitable.
•
Modification
—Do
not
modify any part of the chassis from its original condition.
Unsuitable modifications may result in safety hazards.
Chassis Cooling Considerations
The PXIe-1095 Series chassis is designed to operate on a bench or in an instrument rack.
You must adhere to the cooling clearances as outlined in the following section.
Providing Adequate Clearance
The module and power supply exhaust vents for the PXIe-1095 are on the top of the chassis. The
module intake vents are on the rear of the chassis. There are also intake and exhaust vents located
along the sides of the chassis. The vent locations are shown in Figure 2-2,
.
Adequate clearance between the chassis and surrounding equipment, heat generating devices,
and air flow blockages must be maintained to ensure proper cooling. Minimum cooling
clearances are shown in Figure 2-1,
PXIe-1095 Chassis Minimum Cooling Clearances
For rack mount applications adequate forced air ventilation is required. For benchtop
applications additional cooling clearances may be required for optimal air flow and reduced hot
air recirculation to the air inlet fans.
Caution
Failure to provide these clearances may result in undesired
thermal-related issues with the chassis or modules.
To aid in thermal health monitoring for either rack or benchtop use you can monitor the chassis
intake temperatures in Measurement & Automation Explorer (MAX) to ensure the temperatures
do not exceed the ratings in the
Operating Environment
section of the
PXIe-1095 Specifications
.
Additionally, many PXI modules provide temperature values you can monitor to ensure critical
temperatures are not exceeded. Increasing chassis clearances, ventilation, reducing external
ambient temperatures, and removing nearby heat sources are all options for improving overall
chassis thermal performance.