NI USB-9237 User Guide and Specifications 20 ni.com
Isolation
Channel-to-channel..........................No isolation between channels
Channel-to-earth ground
Continuous...............................60 VDC,
Measurement Category I
Withstand.................................1,000 Vrms, verified by a 5 s
dielectric withstand test
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. Do not
connect the NI USB-9237 to signals or use for measurements within
Measurement Categories II, III, or IV.
Safety Standards
The NI USB-9237 is designed to meet the requirements of the following
standards of safety for electrical equipment for measurement, control,
andlaboratory use:
• IEC 61010-1, EN 61010-1
• UL 61010-1, CSA 612010-1
Note For UL and other safety certifications, refer to the product label, or visit ni.com/
certification, search by model number or product line, and click the appropriate link
in the Certification column.
Hazardous Locations
The NI USB-9237 is not certified for use in hazardous locations.
Environmental
The NI USB-9237 device is intended for indoor use only.
Operating temperature
(IEC60068-2-1, IEC 60068-2-2)............ 0 to 60 °C
Storage temperature
(IEC60068-2-1, IEC 60068-2-2)............ –40 to 85 °C
Ingress protection...................................IP 40