National Instruments NI 9213 C Series thermocouple temperature input module

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National Instruments · CompactDAQ and CompactRIO

NI 9213

The NI 9213 is a 16-channel C Series thermocouple input module for CompactDAQ and CompactRIO systems. It uses scanned 24-bit conversion for high-channel-count temperature measurements.

ManufacturerNational Instruments

ModelNI 9213

Part Number780493-01

Product TypeC Series thermocouple temperature input module

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Inputs16 thermocouple channels

Resolution24-bit ADC

AcquisitionMultiplexed, scanned inputs; not simultaneous sampling

Sensor typesJ, K, T, E, N, B, R, and S thermocouples

Timing modesHigh-resolution and high-speed

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Overview

Product overview

Key product information and technical features.

The NI 9213 adds thermocouple measurements to mixed-signal systems while using a single C Series slot. Its high-density input arrangement suits systems that need multiple temperature measurement points.

Built-in cold-junction compensation and open-thermocouple detection support temperature acquisition. Terminal thermal gradients, sensor type, and thermocouple wire resistance affect measurement accuracy; follow NI's installation guidance.

Anti-aliasing filters condition thermocouple signals before conversion.
Cold-junction compensation supports thermocouple temperature measurements.
Open-thermocouple detection helps identify disconnected sensors.
An internal autozero channel can compensate for offset errors.
High-resolution mode prioritizes accuracy and noise rejection; high-speed mode prioritizes sample rate and bandwidth.

Verified specifications

Technical data

Verified product specifications.

Thermocouple input channels	16 channels
ADC resolution	24 bits
ADC architecture	Delta-sigma
Sampling mode	Scanned
Voltage measurement range	±78.125 mV
High-speed conversion time per channel	740 µs
High-resolution conversion time per channel	55 ms
High-speed sample rate with all channels enabled	75; includes internal autozero and cold-junction channels S/s
High-resolution sample rate with all channels enabled	1; includes internal autozero and cold-junction channels S/s
Operating temperature	-40 to 70 °C
Channel-to-earth isolation	250 Vrms

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National Instruments

Manufacturer

CompactDAQ / CompactRIO

Host chassis platforms

C Series

Modular measurement interface

NI 9213

Thermocouple temperature input module

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Manuals & software

Technical resources

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NI 9213 DatasheetDatasheet · download.ni.com

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NI-9213 Getting StartedGetting-started Guide · ni.com

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NI-9213 Dimensional DrawingsDimensional Drawings · ni.com

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C Series Hardware and LabVIEW CompatibilityTechnical resource

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Difference Between NI 9213 and NI 9214Technical resource

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FAQ

Product-specific questions

Product-specific answers based on available technical information.

Does the NI 9213 sample all inputs simultaneously?

No. The inputs are multiplexed into a shared 24-bit ADC and acquired sequentially.

Is the NI 9213 a general-purpose ±10 V input module?

No. It is a thermocouple input module with a ±78.125 mV measurement range.

What differs between the NI 9213 and NI 9214?

The NI 9214 adds a terminal block that improves measurement accuracy and provides additional cold-junction compensation. Compare the models' accuracy specifications for the intended thermocouple and temperature range.