National Instruments NI 9213 User manual

NI-9213

Getting Started

2023-08-02

Contents

NI-9213 Getting Started. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

ni.com

NI-9213 Getting Started

Connector Types

The NI-9213 is available in two types: push-in spring terminal and spring terminal.

The push-in type spring terminal connector is black and orange. The spring terminal

connector is black. NI-9213 refers to both types unless the two types are specified.

Dierences between the two types of spring terminal connectors are noted by the

connector color.

NI-9213 Block Diagram

Each channel passes through a dierential filter and then is multiplexed and

sampled by a 24-bit analog-to-digital converter (ADC). The channels share a

common ground, COM, that is isolated from other modules in the system.

Figure 1. Input Circuitry for One Channel of the NI-9213

TC+

TC–

COM

NI 9213

Input

Impedance

Open

Thermocouple

Detection

Current

Filtered

Differential

Amplifier

and

Multiplexer

Isolated

ADC

39 MΩ

NI-9213 (Black Connector) Pinout

NI-9213 Getting Started

TC0+

TC2+

TC4+

TC6+

TC8+

TC10+

TC12+

TC14+

COM

TC1+

TC3+

TC5+

TC7+

TC9+

TC11+

TC13+

TC15+

TC0–

TC1–

TC3–

TC5–

TC7–

TC9–

TC11–

TC13–

TC15–

TC2–

TC4–

TC6–

TC8–

TC10–

TC12–

TC14–

COM

Table 1. Signal Descriptions

Signal Description

COM Common reference connection

NC No connection

TC+ Positive thermocouple connection

TC- Negative thermocouple connection

NI-9213 (Black/Orange Connector) Pinout

TC0+

TC2+

TC4+

TC6+

TC8+

TC10+

TC12+

TC14+

COM

TC1+

TC3+

TC5+

TC7+

TC9+

TC11+

TC13+

TC15+

TC0–

TC1–

TC3–

TC5–

TC7–

TC9–

TC11–

TC13–

TC15–

TC2–

TC4–

TC6–

TC8–

TC10–

TC12–

TC14–

COM

ni.com

NI-9213 Getting Started

Table 2. Signal Descriptions

Signal Description

COM Common reference connection

NC No connection

TC+ Positive thermocouple connection

TC- Negative thermocouple connection

Connecting Wires to the NI-9213 (Black Connector)

What to Use

■ NI-9213 spring-terminal connector

■0.08 mm to 1.0 mm (28 AWG to 18 AWG) copper conductor wire with

7 mm (0.28 in) 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-9213

What to Do

Complete the following steps to connect wires to the spring-terminal connector.

123

NI-9213 Getting Started

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.

Connecting Wires to the NI-9213 with Push-in Style

Spring Terminal (Black/Orange Connector)

What to Use

■NI-9213 (black/orange connector)

■0.14 mm to 1.5 mm (26 AWG to 16 AWG) copper conductor wire with

10 mm (0.394 in.) of insulation stripped from the end

■Ferules (optional)

What to Do

Refer to the following table for how to insert a wire into a terminal depending on

what type of wire you are using or if you are using a ferrule.

Option Description

When using a solid wire or stranded wire with a

ferrule

Push the wire into the terminal when using a

solid wire or stranded wire with a ferrule

When using a stranded wire without a ferrule Press the push button and then push the wire

into the terminal

Note You must use 2-wire ferrules to create a secure connection when

connecting more than one wire to a single terminal.

Connecting a Thermocouple

ni.com

NI-9213 Getting Started

Thermocouple

TC–

COM

TC+

Shield

NI 9213

Vreference

Connect the shield to a common-mode voltage reference on the thermocouple.

A valid common-mode voltage reference is a voltage that is within ±1.2 V of the

common-mode voltage of all the connected thermocouples

High-Vibration Application Connections

If your application is subject to high vibration, NI recommends that you use the

NI-9940 backshell kit to protect connections to the NI-9213.

Common-Mode Voltage

The NI-9213 common-mode range is the maximum voltage between any channel

and COM. If COM is not connected, then the common-mode voltage range is the

maximum voltage between any two channels. The NI-9213 measures the common-

mode voltage level of each channel and returns a warning in the soware if the

signal is outside the common-mode voltage range.

Open Thermocouple Detection

Each channel has an open thermocouple detection (OTD) circuit, which consists of

a current source between the TC+ and TC- terminals. If an open thermocouple is

connected to the channel, the current source forces a full-scale voltage across the

terminals.

Input Impedance

Each channel has a resistor that produces an input impedance between the TC and

COM terminals. The gain and oset errors resulting from the source impedance of

NI-9213 Getting Started

connected thermocouples are negligible for most applications. Thermocouples with

a higher lead resistance can introduce more significant errors.

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.

■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-9213 terminals are facing forward or upward.

■Keep the NI-9213 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

system powers on, the system comes out of sleep mode, or you insert/remove

modules.

■Run thermocouple wiring together near the spring-terminal connector to

keep the wires at the same temperature.

■If you connect any extension wires to thermocouple wires, use wires made

of the same conductive material as the thermocouple wires.

■Use the NI-9440 backshell kit.

Thermocouple Measurement Accuracy

Thermocouple measurement errors depend partly on the following factors.

■Type of thermocouple

■Accuracy of the thermocouple

ni.com

NI-9213 Getting Started

■Temperature that you are measuring

■Resistance of the thermocouple wires

■Cold-junction temperature

Note Use the autozero channel to compensate for oset errors.

Cold-Junction Accuracy

Heat dissipated by adjacent C Series modules or nearby heat sources can

cause errors in thermocouple measurements by heating the NI-9213 terminals

to a dierent temperature than the cold-junction compensation sensor. Thermal

gradient across the terminals can cause the terminals of dierent NI-9213 channels

to be at dierent temperatures, which creates accuracy errors and aects the

relative accuracy between channels.

The temperature measurement accuracy specifications include errors caused by the

thermal gradient across the NI-9213 terminals for configurations with the NI-9213

terminals facing forward or upward.

Autozero Channel

The NI-9213 has an internal autozero channel, which can be subtracted from each

thermocouple reading to compensate for oset errors. Use of the autozero channel

is optional, however the NI-9213 specifications assume that autozero is applied to

every sample. Refer to the documentation for the soware that you are using with

the NI-9213 for information about using the autozero channel.

Timing Modes

The NI-9213 supports high-resolution and high-speed timing modes. High-

resolution timing mode optimizes accuracy and noise and rejects power line

frequencies. High-speed timing mode optimizes sample rate and signal bandwidth.

NI-9213 Getting Started

Other manuals for NI 9213

Table of contents

Other National Instruments Control Unit manuals

National Instruments

National Instruments 9501 C Series User manual

National Instruments

National Instruments SCC-LP Series User manual

National Instruments

National Instruments NI-9244 User manual

National Instruments

National Instruments 9246 User manual

National Instruments

National Instruments NI 9503 User manual

National Instruments

National Instruments NI PXIe-4080 User manual

National Instruments

National Instruments NI TB-4340 User manual

National Instruments

National Instruments SCC-CTR01 User manual

National Instruments

National Instruments 9759 User manual

National Instruments

National Instruments NI PXI-6682 User manual

National Instruments

National Instruments NI 9476E User manual

National Instruments

National Instruments PXIe-4466 User manual

National Instruments

National Instruments PCIe-7857 User manual

National Instruments

National Instruments NI 9375 User manual

National Instruments

National Instruments NI 9205 User manual

National Instruments

National Instruments NI 9775 Manual

National Instruments

National Instruments SLSC-12101 User manual

National Instruments

National Instruments NI 9219 Manual

National Instruments

National Instruments NI 9474 User manual

National Instruments

National Instruments Isolated Analog Output Module SCC-AO10 User manual

National Instruments

National Instruments NI 9235 User manual

National Instruments

National Instruments NI 9263 Manual

National Instruments

National Instruments SCC Series User manual

National Instruments

National Instruments DAQCard-DIO-24 User manual

Popular Control Unit manuals by other brands

Festo

Festo Compact Performance CP-FB6-E Brief description

Elo TouchSystems

Elo TouchSystems DMS-SA19P-EXTME Quick installation guide

JS Automation

JS Automation MPC3034A user manual

JAUDT

JAUDT SW GII 6406 Series Translation of the original operating instructions

Spektrum

Spektrum Air Module System manual

BOC Edwards

BOC Edwards Q Series instruction manual

KHADAS

KHADAS BT Magic quick start

Etherma

Etherma eNEXHO-IL Assembly and operating instructions

PMFoundations

PMFoundations Attenuverter Assembly guide

GEA

GEA VARIVENT Operating instruction

Walther Systemtechnik

Walther Systemtechnik VMS-05 Assembly instructions

Altronix

Altronix LINQ8PD Installation and programming manual

Eaton

Eaton Powerware Series user guide

WAGO

WAGO 750-407/040-000 manual

Sony

Sony CCU-590 Operation manual

Graco

Graco 25D614 instructions

Task Force Tips

Task Force Tips YE-RF-900 Instructions for installation, safe operation and maintenance

Shini

Shini SPV-U Series manual