National Instruments NI 9219 User manual

NI-9219 Getting
Started
2022-07-06

Contents
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Safety Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Safety Guidelines for Hazardous Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
NI-9219 Safety Voltages (Black Connector). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Safety Guidelines for Hazardous Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electromagnetic Compatibility Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Special Conditions for Marine Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Preparing the Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
NI 9219 Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Measurement Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Voltage Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Current Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Thermocouple Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4-Wire Resistance and 4-Wire RTD Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3-Wire RTD Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Full-Bridge Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Half-Bridge Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Digital In Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Open Contact Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
TEDS Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
NI-9219 Connection Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Connecting to a Spring-Terminal Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
High-Vibration Application Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Excitation Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Measurement Type Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Voltage Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Current Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Thermocouple Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4-Wire Resistance and 4-Wire RTD Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3-Wire RTD Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Full-Bridge Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Half-Bridge Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Digital In Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
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NI-9219 Getting Started

Open Contact Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Where to Go Next. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
NI Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
© National Instruments 3
NI-9219 Getting Started

Overview
This document explains how to connect to the NI-9219.
Note Before you begin, read the NI-9219 Safety, Environmental, and
Regulatory Information document on ni.com/manuals and complete the
soware and hardware installation procedures in your chassis
documentation.
Note The guidelines in this document are specific to the NI-9219. 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
Caution Observe all instructions and cautions in the user documentation.
Using the product in a manner not specified can damage the product and
compromise the built-in safety protection.
Attention Suivez toutes les instructions et respectez toutes les mises
en garde de la documentation d'utilisation. L'utilisation du produit de
toute autre façon que celle spécifiée risque de l'endommager et de
compromettre la protection de sécurité intégrée.
Safety Guidelines for Hazardous Voltages
If hazardous voltages are connected to the product, take the following precautions.
A hazardous voltage is a voltage greater than:
■ 30 V RMS, 42.4 V peak, or 60 V DC in DRY LOCATIONS
■ 16 V RMS, 22.6 V peak, or 35 V DC in WET LOCATIONS
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NI-9219 Getting Started

Caution Ensure that hazardous voltage wiring is performed only by
qualified personnel adhering to local electrical standards.
Attention S'assurer que le câblage à tension dangereuse est eectué par
du personnel qualifié respectant les normes électriques locales.
Caution Do not mix hazardous voltage circuits and human-accessible
circuits on the same product.
Attention Ne pas combiner des circuits avec des tensions dangereuses et
des circuits accessibles aux personnes sur le même produit.
Caution When product terminals are hazardous voltage LIVE, you must
ensure that devices and circuits connected to the product are properly
insulated from human contact.
Attention Lorsqu'une haute tension dangereuse est appliquée aux
bornes du produit, vous devez vous assurer que les appareils et les circuits
auxquels il est connecté sont correctement isolés de tout contact humain.
Caution You must use the connector backshell kit to ensure that the
terminals are not accessible.
NI-9219 Safety Voltages (Black Connector)
Connect only voltages that are within the following limits.
Channel-to-channel
© National Instruments 5
NI-9219 Getting Started

Continuous 250 V AC, Measurement Category II
Withstand 1,390 V AC, verified by a 5 s dielectric withstand test
Channel-to-earth ground
Continuous 250 V AC, Measurement Category II
Withstand 2,300 V AC, verified by a 5 s dielectric withstand test
Zone 2 hazardous locations applications in Europe
Channel-to-channel and channel-to-earth ground 60 V DC, Measurement Category I
Safety Guidelines for Hazardous Locations
The NI-9219 is suitable for use in hazardous locations; , and hazardous locations;
and nonhazardous locations only. Follow these guidelines if you are installing the
NI-9219 in a potentially explosive environment. Not following these guidelines may
result in serious injury or death.
Caution Do not disconnect I/O-side wires or connectors unless power has
been switched o or the area is known to be nonhazardous.
Caution Do not remove modules unless power has been switched o or
the area is known to be nonhazardous.
Caution Substitution of components may impair suitability for Class I,
Division 2, or Zone 2.
Caution The system must be installed in an enclosure certified for the
intended hazardous (classified) location, having a tool secured cover/door,
where a minimum protection of at least IP54 is provided.
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NI-9219 Getting Started

Special Conditions for Hazardous Locations Use in Europe and
Internationally
The NI-9219 has been evaluated as equipment under DEMKO ATEX and is IECEx
certified. Each NI-9219 is marked and is suitable for use in Zone 2 hazardous
locations, in ambient temperatures of -40 °C ≤ Ta ≤ 70 °C. If you are using the NI-9219
in Gas Group IIC hazardous locations, you must use the device in an NI chassis that
has been evaluated as Ex nC IIC T4, Ex IIC T4, Ex nA IIC T4, or Ex nL IIC T4 equipment.
Caution Transient protection shall be provided that is set at a level not
exceeding 140% of the peak rated voltage value of 85 V at the supply
terminals to the equipment.
Caution The system shall only be used in an area of not more than
Pollution Degree 2, as defined in IEC/EN 60664-1.
Caution The system shall be mounted in an ATEX/IECEx-certified
enclosure with a minimum ingress protection rating of at least IP54 as
defined in IEC/EN 60079-15.
Caution The enclosure must have a door or cover accessible only by the
use of a tool.
Electromagnetic Compatibility Guidelines
This product was tested and complies with the regulatory requirements and limits
for electromagnetic compatibility (EMC) stated in the product specifications. These
requirements and limits provide reasonable protection against harmful interference
when the product is operated in the intended operational electromagnetic
environment.
This product is intended for use in industrial locations. However, harmful
interference may occur in some installations, when the product is connected to a
peripheral device or test object, or if the product is used in residential or
commercial areas. To minimize interference with radio and television reception and
© National Instruments 7
NI-9219 Getting Started

prevent unacceptable performance degradation, install and use this product in strict
accordance with the instructions in the product documentation.
Furthermore, any changes or modifications to the product not expressly approved
by National Instruments could void your authority to operate it under your local
regulatory rules.
Special Conditions for Marine Applications
Some products are approved for marine (shipboard) applications. To verify marine
approval certification for a product, visit ni.com/product-certifications, search by
model number, and click the appropriate link.
Notice In order to meet the EMC requirements for marine applications,
install the product in a shielded enclosure with shielded and/or filtered
power and input/output ports. In addition, take precautions when
designing, selecting, and installing measurement probes and cables to
ensure that the desired EMC performance is attained.
Preparing the Environment
Ensure that the environment in which you are using the NI-9219 meets the following
specifications.
Operating temperature (IEC 60068-2-1, IEC 60068-2-2) -40 °C to 70 °C
Operating humidity (IEC 60068-2-78) 10% RH to 90% RH, noncondensing
Pollution Degree 2
Maximum altitude 2,000 m
Indoor use only.
Note Refer to the device datasheet on ni.com/manuals for complete
specifications.
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NI-9219 Getting Started

NI 9219 Pinout
CH0
CH1
CH2
CH3
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
Mode Pin
1 2 3 4 5 6
Voltage T+ T- — HI LO —
Current T+ T- HI — LO —
4-Wire Resistance T+ T- EX+ HI EX- LO
2-Wire Resistance T+ T- HI — LO —
Thermocouple T+ T- — HI LO —
4-Wire RTD T+ T- EX+ HI EX- LO
3-Wire RTD T+ T- EX+ — EX- LO
Quarter-Bridge T+ T- HI — LO —
Half-Bridge T+ T- EX+ HI EX- —
Full-Bridge T+ T- EX+ HI EX- LO
DI T+ T- — HI LO —
Open Contact T+ T- HI — LO —
Table 1. Signals by Mode
Signal Description
EX+ Positive sensor excitation connection
© National Instruments 9
NI-9219 Getting Started

Signal Description
EX- Negative sensor excitation connection
HI Positive input signal connection
LO Negative input signal connection
T+ TEDS data connection
T- TEDS COM connection
Table 2. Signal Descriptions
Measurement Types
The NI-9219 provides modes for the following measurement types.
■Voltage
■Current
■4-Wire Resistance
■2-Wire Resistance
■Thermocouple
■4-Wire RTD
■3-Wire RTD
■Quarter-Bridge
■Half-Bridge
■Full-Bridge
■Digital In[1]
■Open Contact[1]
1 Only supported in CompactRIO systems.
Voltage Connections
LO
HI
NI 9219
+
–
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NI-9219 Getting Started

Related reference
■Voltage Pinout
Current Connections
LO
HI
NI 9219
Related reference
■Current Pinout
Thermocouple Connections
LO
HI
NI 9219
Thermocouple
Changes in the ambient air temperature near the front connector or a thermocouple
wire conducting heat directly to terminal junctions can cause thermal gradients.
Observe the following guidelines to minimize thermal gradients and improve the
system accuracy.
■Use small-gauge thermocouple wire. Smaller wire transfers less heat to or
from the terminal junction.
■Avoid running thermocouple wires near hot or cold objects.
■Minimize adjacent heat sources and air flow across the terminals.
■Keep the ambient temperature as stable as possible.
■Make sure the NI-9219 terminals are facing forward or upward.
■Keep the NI-9219 in a stable and consistent orientation.
© National Instruments 11
NI-9219 Getting Started

■Allow the thermal gradients to settle aer a change in system power or in
ambient temperature. A change in system power can happen when the
system powers on, the system comes out of sleep mode, or you insert/remove
modules.
Related reference
■Thermocouple Pinout
4-Wire Resistance and 4-Wire RTD Connections
LO
HI
EX-
RTD/
Resistor
EX+
Rwire
Rwire
Rwire
Rwire
NI 9219
Related reference
■4-Wire Resistance and 4-Wire RTD Pinout
3-Wire RTD Connections
RTD
Rwire
Rwire
NI 9219
EX+
EX-
LO
Rwire
Related reference
■3-Wire RTD Pinout
Full-Bridge Connections
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NI-9219 Getting Started

LO
HI
EX-
EX+
Rwire
R1R4
R2R3
Rwire
NI 9219
Related reference
■Full-Bridge Pinout
Half-Bridge Connections
HI
EX-
EX+
Rwire
R1
R2
Rwire
NI 9219
Related reference
■Half-Bridge Pinout
Digital In Connections
LO
HI
NI 9219
+
–
The digital in measurement type is only supported in CompactRIO systems.
Tip Visit ni.com/info and enter the Info Code 9219cdaq for information
about implementing the digital in measurement type in CompactDAQ
systems.
© National Instruments 13
NI-9219 Getting Started

Related reference
■Digital In Pinout
Open Contact Connections
LO
HI
NI 9219
The open contact measurement type is only supported in CompactRIO systems.
Tip Visit ni.com/info and enter the Info Code 9219cdaq for information
about implementing the open contact measurement type in CompactDAQ
systems.
Related reference
■Open Contact Pinout
TEDS Connections
TEDS
Enabled Sensor NI 9219
T+
T-
Data
COM
For more information about TEDS, visit ni.com/info and enter the Info Code rdteds.
NI-9219 Connection Guidelines
■ Make sure that devices you connect to the NI-9219 are compatible with the
module specifications.
■Use shielded cables and twisted pair wiring for the best signal quality.
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NI-9219 Getting Started

■NI recommends using the backshell for all connections to the NI-9219.
■You can connect ground-referenced signal sources to the NI-9219. The
following figure illustrates a grounded connection for a voltage source.
+
–
Signal
Source
Shield
NI 9219
HI
LO
■You can connect floating signal sources to the NI-9219. Ensure that the
voltages on the HI and LO connections are within the channel-to-earth
working voltage range. The following figure illustrates a floating connection
for a voltage source.
+
–
Signal
Source
Shield
NI 9219
HI
LO
Connecting to a Spring-Terminal Connector
What to Use
■ NI-9219 spring-terminal connector
■ copper conductor wire with of insulation stripped from the end
■Flathead screwdriver with a 2.3 mm x 1.0 mm (0.09 in. x 0.04 in.) blade,
included with the NI-9219
What to Do
Complete the following steps to connect wires to the spring-terminal connector.
© National Instruments 15
NI-9219 Getting Started

1 2 3
1. Insert the screwdriver into a spring clamp activation slot to open the
corresponding connector terminal.
2. Press a wire into the open connector terminal.
3. Remove the screwdriver from the activation slot to clamp the wire into place.
High-Vibration Application Connections
If your application is subject to high vibration, NI recommends that you use the
backshell kit to protect connections to the NI-9219.
Excitation Protection
The NI-9219 protects the excitation circuit from overcurrent and overvoltage fault
conditions. The NI-9219 automatically disables the circuit in the event of a fault
condition. Whenever possible, channels automatically recover aer the fault is
removed.
Note Refer to the device datasheet on ni.com/manuals for more
information about excitation protection.
Measurement Type Pinout
The following sections include pinouts for the NI-9219 measurement types.
Voltage Pinout
2
3
4
5
6
—
—
—
HI
LO
—
1
Related reference
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NI-9219 Getting Started

■Voltage Connections
Current Pinout
2
3
4
5
6
—
—
HI
—
LO
—
1
Related reference
■Current Connections
Thermocouple Pinout
2
3
4
5
6
—
—
—
HI
LO
—
1
Related reference
■Thermocouple Connections
4-Wire Resistance and 4-Wire RTD Pinout
2
3
4
5
6
—
—
EX+
HI
EX-
LO
1
Related reference
■4-Wire Resistance and 4-Wire RTD Connections
3-Wire RTD Pinout
2
3
4
5
6
—
—
EX+
—
EX-
LO
1
Related reference
© National Instruments 17
NI-9219 Getting Started

■3-Wire RTD Connections
Full-Bridge Pinout
2
3
4
5
6
—
—
EX+
HI
EX-
LO
1
Related reference
■Full-Bridge Connections
Half-Bridge Pinout
2
3
4
5
6
—
—
EX+
HI
EX-
—
1
Related reference
■Half-Bridge Connections
Digital In Pinout
2
3
4
5
6
—
—
—
HI
LO
—
1
Related reference
■Digital In Connections
Open Contact Pinout
2
3
4
5
6
—
—
HI
—
LO
—
1
Related reference
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NI-9219 Getting Started

■Open Contact Connections
Where to Go Next
CompactRIO NI CompactDAQ
Located at ni.com/manuals
RELATED INFORMATION
C Series Documentation
& Resources
ni.com/info cseriesdoc
Services
ni.com/services
Installs with the software
NI 9219 Datasheet
NI-RIO Help
LabVIEW FPGA Help
NI 9219 Datasheet
NI-DAQmx Help
LabVIEW Help
NI Services
Visit ni.com/support to find support resources including documentation,
downloads, and troubleshooting and application development self-help such as
tutorials and examples.
Visit ni.com/services to learn about NI service oerings such as calibration options,
repair, and replacement.
Visit ni.com/register to register your NI product. Product registration facilitates
technical support and ensures that you receive important information updates from
NI.
NI corporate headquarters is located at 11500 N Mopac Expwy, Austin, TX,
78759-3504, USA.
© National Instruments 19
NI-9219 Getting Started
© 2022 National Instruments Corporation.