National Instruments WSN-3226 User Manual And Specifications page 31

Note For UL and other safety certifications, refer to the product label, or go to
certification
Certification column.
Hazardous Locations
U.S. (UL) ...............................................................Class I, Division 2, Groups A, B, C, D, T4;
Canada (C-UL) ......................................................Class I, Division 2, Groups A, B, C, D, T4;
Europe (DEMKO)..................................................Ex nA nL IIC T4
Safety Voltages
Connect only voltages that are within these limits.
V terminal to C terminal ........................................30 V maximum, Measurement Category I
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.
RF Safety Warning
This product complies with FCC radiation exposure limits set for uncontrolled equipment and meets the
FCC radio frequency (RF) Exposure Guidelines in Supplement C to OET65. This product generates and
radiates radio frequency energy. To comply with the radio frequency radiation exposure guidelines in an
uncontrolled environment, this equipment should be installed and operated with at least 20 cm between
the radiator and the person's body (excluding extremities: hands, wrists, feet, and legs).
This product complies with the European Council Recommendation (1995/519/EC) on the limitation of
exposure of the general public to electromagnetic fields. Compliance was determined in accordance
with the requirements in EN 50371.
Environmental
Operating temperature
(IEC-60068-2-1 and IEC-60068-2-2) ....................–40 to 70 °C
Storage temperature
(IEC-60068-2-1 and IEC-60068-2-2) ....................–40 to 85 °C
Operating humidity (IEC-60068-2-56) ..................10 to 90% RH, noncondensing
Storage humidity (IEC-60068-2-56)......................5 to 95% RH, noncondensing
Pollution Degree (IEC 60664) ...............................2
Maximum altitude..................................................2,000 m
Indoor use only
© National Instruments Corporation
, search by model number or product line, and click the appropriate link in the
Class I, Zone 2, AEx nC IIC T4
Class I, Zone 2, Ex nL IIC T4
31 NI WSN-3226 User Guide and Specifications
ni.com/