Safety Guidelines For Hazardous Locations - National Instruments NI 9264 Operating Instructions Manual

Caution
LIVE (>42.4 V
and circuits connected to the module are properly insulated
from human contact. You must use the NI 9940 connector
backshell kit to ensure that the terminals are not accessible.
Figure 1 shows the NI 9940 connector backshell.

Safety Guidelines for Hazardous Locations

The NI 9264 is suitable for use in Class I, Division 2, Groups A, B,
C, D, T4 hazardous locations; Class I, Zone 2, AEx nA IIC T4, and
NI 9264 Operating Instructions and Specifications
When module terminals are hazardous voltage
/60 VDC), you must ensure that devices
pk
Figure 1. NI 9940 Connector Backshell
4 ni.com