National Instruments NI 9212, TB-9212 Getting Started Manual
GETTING STARTED GUIDE
NI 9212 and TB-9212
8 TC, ±78 mV, 24 Bit, 95 S/s/ch Simultaneous,
Isothermal Terminal Block
This document explains how to connect to the NI 9212 using the
TB-9212.
Note Before you begin, complete the software and
hardware installation procedures in your chassis
documentation.
Note The guidelines in this document are specific to
the NI 9212. The other components in the system might
not meet the same safety ratings. Refer to the
documentation for each component in the system to
determine the safety and EMC ratings for the entire
system.
Safety Guidelines
Operate the NI 9212 only as described in this document.
Caution Do not operate the NI 9212 in a manner not
specified in this document. Product misuse can result in
a hazard. You can compromise the safety protection
built into the product if the product is damaged in any
way. If the product is damaged, return it to NI for
repair.
2 | ni.com | NI 9212 Getting Started Guide
Hazardous Voltage This icon denotes a warning
advising you to take precautions to avoid electrical
shock.
Safety Guidelines for Hazardous Voltages
If hazardous voltages are connected to the device, take the
following precautions. A hazardous voltage is a voltage greater
than 42.4 Vpk voltage or 60 VDC to earth ground.
Caution Ensure that hazardous voltage wiring is
performed only by qualified personnel adhering to local
electrical standards.
Caution Do not mix hazardous voltage circuits and
human-accessible circuits on the same module.
Caution Ensure that devices and circuits connected to
the module are properly insulated from human contact.
Caution When module terminals are hazardous
voltage LIVE (>42.4 Vpk/60 VDC), you must ensure
that devices and circuits connected to the module are
properly insulated from human contact. You must use
the TB-9212 included with the NI 9212 to ensure that
the terminals are not accessible.
NI 9212 Getting Started Guide | © National Instruments | 3
Note The TB-9212 contains a plastic insert to prevent
accidental wire contact with the metal enclosure.
Safety Voltages
Connect only voltages that are within the following limits:
Channel-to-channel isolation
Up to 2,000 m altitude
Continuous 250 Vrms, Measurement
Category II
Withstand 1,500 Vrms, verified by a 5 s
dielectric test
Up to 5,000 m altitude
Continuous 60 VDC, Measurement
Category I
Withstand 1,000 Vrms, verified by a 5 s
dielectric test
4 | ni.com | NI 9212 Getting Started Guide
Channel-to-earth ground isolation
Up to 2,000 m altitude
Continuous 250 Vrms, Measurement
Category II
Withstand 3,000 Vrms, verified by a 5 s
dielectric test
Up to 5,000 m altitude
Continuous 60 VDC, Measurement
Category I
Withstand 1,000 Vrms , verified by a 5 s
dielectric 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.
NI 9212 Getting Started Guide | © National Instruments | 5
Caution If using in Division 2 or Zone 2 hazardous
locations applications, do not connect the NI 9212 and
TB-9212 to signals or use for measurements within
Measurement Categories II, III, or IV.
Note Measurement Categories CAT I and CAT O are
equivalent. These test and measurement circuits are not
intended for direct connection to the MAINS building
installations of Measurement Categories CAT II,
CAT III, or CAT IV.
Measurement Category II is for measurements performed on
circuits directly connected to the electrical distribution system.
This category refers to local-level electrical distribution, such as
that provided by a standard wall outlet, for example, 115 V for
U.S. or 230 V for Europe.
Caution Do not connect the NI 9212 and TB-9212 to
signals or use for measurements within Measurement
Categories III or IV.
Safety Guidelines for Hazardous Locations
The NI 9212 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
6 | ni.com | NI 9212 Getting Started Guide
Loading...