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National Instruments NI-9217 RTD temperature input module
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National Instruments · CompactDAQ and CompactRIO

NI-9217

The NI-9217 is a four-channel C Series temperature input module for PT100 RTDs. It supports 3- and 4-wire measurements with automatic wiring detection and per-channel current excitation.

ManufacturerNational Instruments
ModelNI-9217
Part Number779592-01
Product TypeRTD temperature input module
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Free Shippingfull policy linked
30-Day Warrantystandard coverage
30-Day Returnspolicy applies
Technical Supportmodel & compatibility help
Channels4 RTD inputs
Resolution24 bits
Maximum aggregate rate400 S/s
Resistance range0–400 Ω
ConnectionScrew terminals
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Overview

Product overview

Key product information and technical features.

Designed for CompactDAQ and CompactRIO systems, the NI-9217 measures PT100 RTDs using a scanned, delta-sigma conversion architecture.

Selectable high-speed and high-resolution modes let users prioritize conversion speed or noise rejection. Channel-to-earth isolation does not provide channel-to-channel isolation.

  • Automatic detection of 3- or 4-wire RTD connections.
  • Selectable high-sample-rate and high-resolution modes.
  • 1 mA excitation per channel.
  • 50/60 Hz noise rejection in high-resolution mode.
Verified specifications

Technical data

Verified product specifications.

Analog input channels4 channels
ADC resolution24 bits
Sampling architectureScanned, delta-sigma
Maximum aggregate sample rate400 S/s
High-speed conversion time2.5 ms per channel; 10 ms for all channels
High-resolution conversion time200 ms per channel; 800 ms for all channels
Resistance measurement range0–400 Ω
PT100 temperature measurement range-200 to 850 °C
Excitation current1 per channel mA
Channel-to-earth continuous isolation250 Vrms, CAT II, up to 2,000 m altitude
Channel-to-channel isolationNone
Typical temperature accuracy0.15 °C at 25 °C ambient, 4-wire mode, measured range -200 to 150 °C; add 0.1 °C in high-speed mode
Operating temperature-40 to 70 °C
Front connectionScrew terminal
Condition & included items

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Condition

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Included

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Compatibility

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National Instruments

Manufacturer

CompactDAQ / CompactRIO

Host platforms

C Series

Module interface family

NI-9217

PT100 RTD input module

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Manuals & software

Technical resources

Manuals, software and technical resources for this model.

NI-9217 Product PageProduct Page · ni.com
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NI 9217 DatasheetDatasheet · download.ni.com
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NI 9217 Getting Started GuideGetting Started Guide · download.ni.com
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NI-9217 Dimensional DrawingsDimensional Drawings · ni.com
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NI Guidance on 2-Wire RTD SupportTechnical resource
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Shipping, warranty & returns

Commercial terms

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Shipping
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Warranty
30-Day Warranty. Standard coverage applies.
Returns
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FAQ

Product-specific questions

Product-specific answers based on available technical information.

Which RTD wiring configurations does the NI-9217 support?

It supports 3- and 4-wire PT100 RTDs and automatically detects the connected wiring type.

Does the NI-9217 officially support 2-wire RTDs?

No. NI documents a wiring workaround but does not specify 2-wire measurement accuracy. Uncompensated lead resistance reduces accuracy.

Is 400 S/s the rate for each channel?

No. NI specifies 400 S/s aggregate and describes the module as 100 S/s per channel.

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