NATIONAL INSTRUMENTS NI-9212 Temperature Input Module 8-Channel Instruction Manual

: June 12, 2024
: NATIONAL INSTRUMENTS

NI-9212

2023-06-07

Overview

NATIONAL INSTRUMENTS NI-9212

This document explains how to connect to the NI 9212 using the TB-9212. In this document, TB-9212 with screw terminal and TB-9212 with mini TC are inclusively referred to as 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.

© 2015-2016 National Instruments Corporation. All rights reserved. Refer to the \_Legal Information directory for information about NI copyright, patents, trademarks, warranties, product warnings, and export compliance.

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.

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.

Note The TB-9212 with screw terminal contains a plastic insert to prevent accidental wire contact with the metal enclosure.

Isolation Voltages

NI 9212 and TB-9212 with Screw Terminal Isolation 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
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.

Caution If using in Division 2 or Zone 2 hazardous locations applications, do not connect the NI 9212 and TB-9212 with screw terminal 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 with screw terminal to signals or use for measurements within Measurement Categories III or IV.

NI 9212 and TB-9212 with Mini TC Isolation Voltages

Connect only voltages that are within the following limits:

Channel-to-channel isolation, Up to 5,000 m altitude

Continuous| 60 VDC, Measurement Category I
Withstand| 1,000 Vrms
Channel-to-earth ground isolation, Up to 5,000 m altitude
Continuous| 60 VDC, Measurement Category I
Withstand| 1,000 Vrms

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 If using in Division 2 or Zone 2 hazardous locations applications, do not connect the NI 9212 and TB-9212 with mini TC 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.

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 and Ex nA IIC T4 hazardous locations; and nonhazardous locations only. Follow these guidelines if you are installing the NI 9212 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 off or the area is known to be nonhazardous.

Caution Do not remove modules unless power has been switched off or the area is known to be nonhazardous.

Caution Substitution of components may impair suitability for Class I, Division 2.

Caution For Division 2 and Zone 2 applications, install the system in an enclosure rated to at least IP54 as defined by IEC/EN 60079-15.

Caution For Division 2 and Zone 2 applications, connected signals must be within the following limits.

Capacitance	0.2 µF maximum

Special Conditions for Hazardous Locations Use in Europe and

Internationally

The NI 9212 has been evaluated as Ex nA IIC T4 Gc equipment under DEMKO 12 ATEX 1202658X and is IECEx UL 14.0089X certified. Each NI 9212 is marked II 3G 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 9212 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 You must make sure that transient disturbances do not exceed 140% of the rated voltage.

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 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 Lloyd’s Register (LR) Type Approved for marine (shipboard) applications. To verify Lloyd’s Register certification for a product, visit ni.com/certification and search for the LR certificate, or look for the Lloyd’s Register mark on the product.

Caution 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 9212 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| 5,000 m

Indoor use only.

Note Refer to the device datasheet on ni.com/manuals for complete specifications.

TB-9212 Pinout

Table 1. Signal Descriptions

Signal	Description
TC	Thermocouple connection
TC+	Positive thermocouple connection
TC-	Negative thermocouple connection

NI 9212 Connection Guidelines

Make sure that devices you connect to the NI 9212 are compatible with the module specifications.
The shield grounding methodology can vary depending on the application.
Refer to your thermocouple documentation or the thermocouple wire spool to determine which wire is the positive lead and which wire is the negative lead.

Minimizing Thermal Gradients

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.
Run thermocouple wiring together near the TB-9212 to keep the wires at the same temperature.
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 9212 terminals are facing forward or upward.
Keep the NI 9212 in a stable and consistent orientation.
Allow the thermal gradients to settle after 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.
If possible, use the foam pad in the TB-9212 with screw terminal opening to restrict airflow around the terminals.

NI 9212 and TB-9212 with Screw Terminal Thermocouple Connection

NATIONAL INSTRUMENTS NI-9212 - Connection 1

Thermocouple
Shield
Ground Lug

NI 9212 and TB-9212 with Mini TC Thermocouple Connection

Thermocouple
Shield
Ground Lug
Ferrite

Caution Electrostatic Discharge (ESD) can damage the TB-9212 with mini TC. To prevent damage, use industry-standard ESD prevention measures during installation, maintenance, and operation.

Installing the TB-9212 with Screw Terminal

What to Use

NI 9212
TB-9212 with screw terminal
Screwdriver

What to Do

NATIONAL INSTRUMENTS NI-9212 - What to Do 1

Connect the TB-9212 with screw terminal to the NI 9212 front connector.
Tighten the jackscrews to a maximum torque of 0.4 N · m (3.6 lb · in.). Do not overtighten the jackscrews.

Wiring the TB-9212 with screw terminal

What to Use

TB-9212 with screw terminal
0.05 mm to 0.5 mm (30 AWG to 20 AWG) wire with 5.1 mm (0.2 in.) of the inner insulation stripped and 51 mm (2.0 in.) of the outer insulation stripped
Zip tie
Screwdriver

What to Do

NATIONAL INSTRUMENTS NI-9212 - What to Do 2

Loosen the captive screws on the TB-9212 with screw terminal and remove the top cover and foam pad.
Insert the stripped end of the wire fully into the appropriate terminal and tighten the screw for the terminal. Make sure no exposed wire extends past the screw terminal.
Route the wire through the TB-9212 with screw terminal opening, remove slack from the wiring, and secure the wires using a zip tie.
Replace the foam pad in the TB-9212 with screw terminal opening, reinstall the top cover, and tighten the captive screws.

Installing the TB-9212 with Mini TC

What to Use

NI 9212
TB-9212 with mini TC
Screwdriver

What to Do

NATIONAL INSTRUMENTS NI-9212 - What to Do 3

Connect the TB-9212 with mini TC to the NI 9212 front connector.
Tighten the jackscrews to a maximum torque of 0.4 N · m (3.6 lb · in.). Do not overtighten the jackscrews.

Connecting the TB-9212 with mini TC

What to Use

TB-9212 with mini TC
Shielded thermocouple
Clamp-on ferrite bead (part number 781233-01)

What to Do

Plug the thermocouple into the thermocouple input on the TB-9212 with mini TC.
Install a clamp-on ferrite bead on the shield ground wire between the cable and the ground lug. You can use one ferrite bead per device for all cables.

Where to Go Next

CompactRIO

|

NI CompactDAQ

---|---

NI 9212 Datasheet
NI-RIO Help
LabVIEW FPGA Help

|

NI 9212 Datasheet
NI-DAQmx Help
LabVIEW Help

|

RELATED INFORMATION

C Series Documentation & Resources
ni.com/info cseriesdoc| Services
ni.com/services

Located at ni.com/manuals Installs with the software

Worldwide Support and Services

The NI website is your complete resource for technical support. At ni.com/support, you have access to everything from troubleshooting and application development self-help resources to email and phone assistance from NI Application Engineers.

Visit ni.com/services for NI Factory Installation Services, repairs, extended warranty, and other services.

Visit ni.com/register to register your NI product. Product registration facilitates technical support and ensures that you receive important information updates from NI.

A Declaration of Conformity (DoC) is our claim of compliance with the Council of the European Communities using the manufacturer’s declaration of conformity. This system affords the user protection for electromagnetic compatibility (EMC) and product safety. You can obtain the DoC for your product by visiting ni.com/certification. If your product supports calibration, you can obtain the calibration certificate for your product at ni.com/calibration.

© National Instruments

NI corporate headquarters is located at 11500 North Mopac Expressway, Austin, Texas, 78759-3504. NI also has offices located around the world. For telephone support in the United States, create your service request at ni.com/support or dial 1 866 ASK MYNI (275 6964). For telephone support outside the United States, visit the Worldwide Offices section of ni.com/niglobal to access the branch office websites, which provide up-to-date contact information, support phone numbers, email addresses, and current events.