National Instruments NI 9212 Bedienungsanleitung

NI-9212

2023-06-07

Contents

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Safety Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Safety Guidelines for Hazardous Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Isolation Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Safety Guidelines for Hazardous Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Special Conditions for Hazardous Locations Use in Europe and Internationally.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Electromagnetic Compatibility Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Special Conditions for Marine Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Preparing the Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

TB-9212 Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

NI 9212 Connection Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Minimizing Thermal Gradients. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

NI 9212 and TB-9212 with Screw Terminal Thermocouple Connection. . . . . . . . . . . . 11

NI 9212 and TB-9212 with Mini TC Thermocouple Connection. . . . . . . . . . . . . . . . . . . 11

Installing the TB-9212 with Screw Terminal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Wiring the TB-9212 with screw terminal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Installing the TB-9212 with Mini TC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Connecting the TB-9212 with mini TC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Where to Go Next. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Worldwide Support and Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

ni.com

NI-9212

Overview

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 soware 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.

<National Instruments>\_Legal Information directory for information about NI

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.

NI-9212

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

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NI-9212

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.

NI-9212

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

ni.com

NI-9212

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 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.

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

NI-9212

-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.

ni.com

NI-9212

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

NI-9212

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 aer a change in system power or in

ambient temperature. A change in system power can happen when the

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NI-9212

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