Overview

High-accuracy C Series analog input modules for National Instruments

CompactRIO and NI CompactDAQ provide high-performance measurements

for a wide variety of industrial, in-vehicle, and laboratory sensors and

signal types. Each module includes built-in signal conditioning and an

integrated connector with screw terminal or cable options for flexible

and low-cost signal wiring. All modules feature NI CompactRIO Extreme

Industrial Certifications and Ratings.

System Compatibility

You can use NI C Series modules in multiple system types depending

on available software. See Table 1 for CompactRIO and NI CompactDAQ

module compatibility because not all modules work with both systems.

Many of the advanced features described apply only to reconfigurable

I/O systems and not to NI CompactDAQ.

Advanced Features

When used with CompactRIO, NI C Series analog input modules

connect directly to reconfigurable I/O (RIO) FPGA hardware to create

high-performance embedded systems. The reconfigurable FPGA

hardware within CompactRIO provides a variety of options for custom

timing, triggering, synchronization, filtering, signal processing, and

high-speed decision making for all C Series analog modules. For

instance, with CompactRIO, you can implement custom triggering for

any analog sensor type on a per-channel basis using the flexibility and

performance of the FPGA and the numerous arithmetic and comparision

function blocks built into NI LabVIEW FPGA.

Key Features

• High-accuracy, high-performance analog measurements for any

CompactRIO embedded system, R Series expansion chassis, or

NI CompactDAQ chassis

• Screw terminals, BNC, D-Sub, spring terminals, strain relief, high-

voltage, cable, solder cup backshell, and other connectivity options

• Available channel-to-earth ground double-isolation barrier for safety,

noise immunity, and high common-mode voltage range

• CompactRIO Extreme Industrial Certifications and Ratings

• Built-in signal conditioning for direct connection to sensors and

industrial devices

information on module availability, example programs, application notes,

and other developer tools.

C Series Analog Input Modules

• Signal conditioning for high voltage

(±60 V), thermocouples, RTDs,

accelerometers, microphones,

strain gages, current inputs

• Advanced features such as smart TEDS

sensor capability, antialiasing filters,

open-thermocouple detection

• ±80 mV, ±10 V, or ±60 V analog

input ranges

• 12-, 16-, or 24-bit

(delta-sigma) resolution

• Up to 800 kS/s multiplexed or up to

100 kS/s simultaneous-sampling

analog-to-digital converter (ADC)

• Up to 32 channels per module

• NIST-traceable calibration certificate

for guaranteed accuracy

NI 9201, NI 921x, NI 9221, NI 923x

North American

Hazardous Locations

Model CompactRIO NI CompactDAQ

Signal Type

Channels

Resolution

(bits)

Max Sampling

Rate (S/s)

Signal

Input Ranges

Simultaneous

Sampling

Antialiasing

Filters

Isolation

Connector Options

NI 9201



Voltage

8

12

500 k

±10 V

–

–



Screw Terminal, D-Sub

NI 9203





Current

8

16

200 k

±20 mA, 0 to 20 mA

–

–



Screw Terminal

NI 9205



Voltage

32 SE/16 DI

16

250 k

±10, ±5, ±1, ±0.2 V

–

–



Spring Terminal, D-Sub

NI 9206





CAT I Isolated

Voltage

16 DI

16

250 k

±10, ±5, ±1, ±0.2 V

–

–



Spring Terminal

NI 9211



Thermocouple

4

24

15

±80 mV

–



Screw Terminal

NI 9215





Voltage

4

16

100 k/ch

±10 V



–



Screw Terminal, BNC

NI 9217



RTD

4

24

400

0 to 400 Ω

–



Screw Terminal

NI 9221





Voltage

8

12

800 k

±60 V

–

–



Screw Terminal, D-Sub

NI 9233



IEPE

4

24

50 k/ch

±5 V



–

BNC

NI 9237





Bridge

4

24

50 k/ch

±250 mV







RJ50

Table 1. C Series Analog Input Modules Selection Guide