National Instruments Deterministic Ethernet Expansion Chassis NI 9144 - Manual (Page 15)

© National Instruments Corporation 15 NI 9144 User Guide and Specifications
Measurement Category I is for measurements performed on circuits not
directly connected to the electrical distribution system referred to as
MAINS voltage. MAINS is a hazardous live electrical supply system that
powers equipment. This category is for measurements of voltages from
specially protected secondary circuits. Such voltage measurements include
signal levels, special equipment, limited-energy parts of equipment,
circuits powered by regulated low-voltage sources, and electronics.
Caution Do not connect the system to signals or use for measurements within
Measurement Categories II, III, or IV.
Hazardous Locations
U.S. (UL)................................................ Class I, Division 2, Groups A,
B, C, D, T4; Class I, Zone 2,
AEx nA IIC T4
Canada (C-UL)....................................... Class I, Division 2, Groups A,
B, C, D, T4; Class I, Zone 2,
Ex nA IIC T4
Europe (DEMKO).................................. Ex nA IIC T4
Environmental
The NI 9144 chassis is intended for indoor use only, but it may be used
outdoors if mounted in a suitably rated enclosure.
Operating temperature
(IEC 60068-2-1, IEC 60068-2-2)........... –40 to 70 °C
Note To meet this operating temperature range, follow the guidelines in the installation
instructions for your EtherCAT system.
Storage temperature
(IEC 60068-2-1, IEC 60068-2-2)........... –40 to 85 °C
Ingress protection ................................... IP 40
Operating humidity
(IEC 60068-2-56) ................................... 10 to 90% RH, noncondensing
Storage humidity
(IEC 60068-2-56) ................................... 5 to 95% RH, noncondensing
Maximum altitude .................................. 2,000 m
Pollution Degree (IEC 60664) ............... 2