Product Descriptions

NI-9201: ±10 V, 500 kS/s, 12-Bit, 8-Channel C Series Voltage Input Module

NI-9202: ±10 V, 10 kS/s, 24-Bit, 16-Channel C Series Voltage Input Module

NI-9205: ±10 V, 250 kS/s, 16-Bit, 32-Channel C Series Voltage Input Module

NI-9206: ±10 V, 250 kS/s, 16-Bit, 32-Channel, 60 VDC Isolation C Series Voltage Input Module

NI-9209: ±10 V, 500 S/s, 16-Channel C Series Voltage Input Module

NI-9215: ±10 V, 100 kS/s/ch, 16-Bit, Simultaneous Input, 4-Channel C Series Voltage Input Module

NI-9220: ±10 V, 100 kS/s/ch, 16-Bit, Simultaneous Input, 16-Channel C Series Voltage Input Module

NI-9221: ±60 V, 800 kS/s, 12-Bit, 8-Channel C Series Voltage Input Module

NI-9222: ±10 V, 500 kS/s/ch, 16-Bit, Simultaneous Input, 4-Channel C Series Voltage Input Module

NI-9223: ±10 V, 1 MS/s, 16-Bit, Simultaneous Input, 4-Channel C Series Voltage Input Module

NI-9224: ±10 V, 1 kS/s/ch, 24-Bit, Simultaneous Input, 8-Channel C Series Voltage Input Module

NI-9228: ±60 V, 1 kS/s/ch, 24-Bit, Simultaneous Input, 8-Channel C Series Voltage Input Module

NI-9229: ±60 V, 50 kS/s/ch, 24-Bit, Simultaneous Input, 4-Channel C Series Voltage Module

NI-9238: ±500 mV, 50 kS/s/ch, 24-Bit, Simultaneous Input, 4-Channel C Series Voltage Input Module

NI-9239: ±10 V, 50 kS/s/ch, 24-Bit, Simultaneous Input, 4-Channel C Series Voltage Input Module

NI-9251: 3 Vrms, 102.4 kS/s/ch Simultaneous, 2-Channel C Series Voltage Input Module

NI-9252: ±10 V, 50 kS/s/ch, 24-Bit, 8-Channel C Series Voltage Input Module

Physical Characteristics

Weight

NI-9201 with Screw Terminal

165 g (5.8 oz)

NI-9201 with Spring Terminal

152 g (5.4 oz)

NI-9201 with DSUB

142 g (5.0 oz)

NI-9202 with Spring Terminal

138.6 g (4.9 oz)

NI-9202 with DSUB

149 g (5.3 oz)

NI-9205 with Push-In Spring Terminal

163 g (5.7 oz)

NI-9205 with Spring Terminal

158 g (5.6 oz)

NI-9205 with DSUB

148 g (5.3 oz)

NI-9206 with Spring Terminal

163 g (5.7 oz)

NI-9209 with Spring Terminal

159 g (5.6 oz)

NI-9209 with DSUB

144 g (5.1 oz)

NI-9215 with Screw Terminal

150 g (5.3 oz)

NI-9215 with Spring Terminal

138 g (4.9 oz)

NI-9215 with BNC

173 g (6.1 oz)

NI-9220 with Push-In Spring Terminal

148 g (5.2 oz)

NI-9220 with Spring Terminal

143 g (5.0 oz)

NI-9220 with DSUB

147 g (5.2 oz)

NI-9221 with Screw Terminal

165 g (5.8 oz)

NI-9221 with Spring Terminal

152 g (5.4 oz)

NI-9221 with DSUB

142 g (5.0 oz)

NI-9222 with Screw Terminal

138 g (4.9 oz)

NI-9222 with BNC

165 g (5.8 oz)

NI-9223 with Screw Terminal

138 g (4.9 oz)

NI-9223 with BNC

165 g (5.8 oz)

NI-9224 with Screw Terminal

152 g (5.36 oz)

NI-9228 with Screw Terminal

152 g (5.36 oz)

NI-9229 with Screw Terminal

147 g (5.2 oz)

NI-9229 with BNC

169 g (6.0 oz)

NI-9238 with Screw Terminal

146 g (5.15 oz)

NI-9239 with Screw Terminal

147 g (5.2 oz)

NI-9239 with BNC

169 g (6.0 oz)

NI-9251 with mini XLR

140 g (4.9 oz)

NI-9252 with Screw Terminal

134 g (4.7 oz)

NI-9252 with DSUB

149 g (5.3 oz)

Dimensions

Visit ni.com/dimensions and search by module number.

Note Some NI C Series modules offer two types of spring terminal connectors: push-in spring terminal and spring terminal. The black/orange push-in spring terminal connectors do not require a tool for signal connection; push the wire into the terminal when using solid wire or stranded wire with a ferrule, or by pressing the push button when using stranded wire without a ferrule. The black spring terminal connectors require a flathead screwdriver with a 2.3 mm × 1.0 mm (0.09 in. × 0.04 in.) blade for signal connection; insert the screwdriver into a spring clamp activation slot to open the corresponding connector terminal, press a wire into the open connector terminal, and then remove the screwdriver from the activation slot to clamp the wire into place.

NI-9201 with Screw Terminal, NI-9215 with Screw Terminal, NI-9221 with Screw Terminal

Screw-terminal wiring

Gauge

0.2 mm2 to 2.5 mm2 (30 AWG to 12 AWG) copper conductor wire

Wire strip length

13 mm (0.51 in.) of insulation stripped from the end

Temperature rating

90 °C minimum

Torque for screw terminals

0.5 N · m to 0.6 N · m (4.4 lb · in. to 5.3 lb · in.)

Wires per screw terminal

One wire per screw terminal; two wires per screw terminal using a 2-wire ferrule

Ferrules

0.25 mm2 to 2.5 mm2

Connector securement

Securement type

Screw flanges provided

Torque for screw flanges

0.2 N · m (1.8 lb · in.)

NI-9201 with Spring Terminal, NI-9215 with Spring Terminal, NI-9221 with Spring Terminal

Spring-terminal wiring

Gauge

0.2 mm2 to 2.5 mm2 (26 AWG to 14 AWG) copper conductor wire

Wire strip length

10 mm (0.39 in.) of insulation stripped from the end

Temperature rating

90 °C minimum

Wires per spring terminal

One wire per screw terminal; two wires per screw terminal using a 2-wire ferrule

Ferrules

0.25 mm2 to 2.5 mm2

Connector securement

Securement type

Screw flanges provided

Torque for screw flanges

0.2 N · m (1.8 lb · in.)

NI-9202 with Spring Terminal

Spring-terminal wiring

Gauge

0.14 mm2 to 1.5 mm2 (26 AWG to 16 AWG) copper conductor wire

Wire strip length

10 mm (0.39 in.) of insulation stripped from the end

Temperature rating

90 °C minimum

Wires per spring terminal

One wire per screw terminal; two wires per screw terminal using a 2-wire ferrule

Ferrules

Single ferrule, uninsulated

0.14 mm2 to 1.5 mm2 (26 AWG to 16 AWG) 10 mm barrel length

Single ferrule, insulated

0.14 mm2 to 1.5 mm2 (26 AWG to 18 AWG) 12 mm barrel length

Two-wire ferrule, insulated

2x 0.34 mm2 (2x 22 AWG) 12 mm barrel length

Connector securement

Securement type

Screw flanges provided

Torque for screw flanges

0.2 N · m (1.8 lb · in.)

NI-9205 with Push-In Spring Terminal, NI-9220 with Push-In Spring Terminal (Black/Orange Connector)

Spring-terminal wiring

Gauge

0.13 mm2 to 1.5 mm2 (26 AWG to 16 AWG) copper conductor wire

Wire strip length

10 mm (0.39 in.) of insulation stripped from the end

Temperature rating

90 °C minimum

Wires per spring terminal

One wire per screw terminal; two wires per screw terminal using a 2-wire ferrule

Ferrules

0.14 mm2 to 1.5 mm2

Connector securement

Securement type

Screw flanges provided

Torque for screw flanges

0.2 N · m (1.8 lb · in.)

NI-9205 with Spring Terminal (Black Connector)

Spring terminal wiring

Gauge

0.08 mm2 to 1.0 mm2 (28 AWG to 18 AWG) copper conductor wire

Wire strip length

7 mm (0.28 in.) of insulation stripped from the end

Temperature rating

90 °C, minimum

Wires per spring terminal

One wire per spring terminal

Connector securement

Securement type

Screw flanges provided

Torque for screw flanges

0.2 N · m (1.80 lb · in.)

NI-9206 with Spring Terminal

Spring-terminal wiring

Gauge

0.13 mm2 to 1.5 mm2 (26 AWG to 16 AWG) copper conductor wire

Wire strip length

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

Temperature rating

90 °C minimum

Wires per spring terminal

One wire per screw terminal; two wires per screw terminal using a 2-wire ferrule

Ferrules

0.14 mm2 to 1.5 mm2

Connector securement

Securement type

Screw flanges provided

Torque for screw flanges

0.2 N · m (1.8 lb · in.)

NI-9209 with Spring Terminal

Spring-terminal wiring

Gauge

0.14 mm2 to 1.5 mm2 (26 AWG to 16 AWG) copper conductor wire

Wire strip length

10 mm (0.39 in.) of insulation stripped from the end

Temperature rating

90 °C minimum

Wires per spring terminal

One wire per screw terminal; two wires per screw terminal using a 2-wire ferrule

Ferrules

0.14 mm2 to 1.5 mm2 (26 AWG to 16 AWG) 10 mm barrel length

Connector securement

Securement type

Screw flanges provided

Torque for screw flanges

0.2 N · m (1.8 lb · in.)

NI-9220 with Push-In Spring Terminal (Black/Orange Connector)

Spring-terminal wiring

Gauge

0.14 mm2 to 1.5 mm2 (26 AWG to 16 AWG) copper conductor wire

Wire strip length

10 mm (0.39 in.) of insulation stripped from the end

Temperature rating

90 °C minimum

Wires per spring terminal

One wire per screw terminal; two wires per screw terminal using a 2-wire ferrule

Ferrules

0.14 mm2 to 1.5 mm2

Connector securement

Securement type

Screw flanges provided

Torque for screw flanges

0.2 N · m (1.8 lb · in.)

NI-9222 with Screw Terminal, NI-9223 with Screw Terminal, NI-9224 with Screw Terminal, NI-9228 with Screw Terminal, NI-9229 with Screw Terminal, NI-9238 with Screw Terminal, NI-9239 with Screw Terminal

Screw-terminal wiring

Gauge

0.05 mm2 to 1.5 mm2 (30 AWG to 14 AWG) copper conductor wire

Wire strip length

6 mm (0.24 in.) of insulation stripped from the end

Temperature rating

90 °C minimum

Torque for screw terminals

0.22 N · m to 0.25 N · m (1.95 lb · in. to 2.21 lb · in.)

Wires per screw terminal

One wire per screw terminal; two wires per screw terminal using a 2-wire ferrule

Ferrules

0.25 mm2 to 1.5 mm2

Connector securement

Securement type

Screw flanges provided

Torque for screw flanges

0.2 N · m (1.8 lb · in.)

NI-9252 with Screw Terminal

Screw-terminal wiring

Gauge

0.05 mm2 to 0.82 mm2 (30 AWG to 18 AWG) copper conductor wire

Wire strip length

5 mm to 6 mm (0.20 in. to 0.24 in.) of insulation stripped from the end

Temperature rating

90 °C minimum

Torque for screw terminals

0.20 N · m to 0.25 N · m (1.8 lb · in. to 2.2 lb · in.)

Wires per screw terminal

One wire per screw terminal; two wires per screw terminal using a 2-wire ferrule

Ferrules

0.25 mm2 to 1.0 mm2

Connector securement

Securement type

Screw flanges provided

Torque for screw flanges

0.3 N · m to 0.4 N · m (2.7 lb · in. to 3.5 lb · in.)

Environmental

Temperature

Operating

-40 °C to 70 °C

Storage

-40 °C to 85 °C

Ingress protection

IP40

Humidity

Operating

10% RH to 90% RH, noncondensing

Storage

5% RH to 95% RH, noncondensing

Pollution Degree

2

Maximum altitude

NI-9201

2,000 m

NI-9202

5,000 m

NI-9205

5,000 m

NI-9206

2,000 m

NI-9209

5,000 m

NI-9215

2,000 m

NI-9220 with push-in spring terminal

4,000 m

NI-9220 with spring terminal

2,000 m

NI-9220 with DSUB

2,000 m

NI-9221

2,000 m

NI-9222

5,000 m

NI-9223

5,000 m

NI-9224

5,000 m

NI-9228

5,000 m

NI-9229

2,000 m

NI-9238

5,000 m

NI-9239

2,000 m

NI-9251

5,000 m

NI-9252

5,000 m

Indoor use only.

Hazardous Locations

Explosive atmospheres rating

Ex ec IIC T4 Gc

CCC certificate number

2021312310000312

Safety Guidelines

Operate the product only as described in this document.

  • Caution—This icon denotes a caution, which advises you to consult documentation where this symbol is marked.
  • Hazardous Voltage—This icon denotes a warning advising you to take precautions to avoid electrical shock with the product.
    • Caution Do not operate this product 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.

    Safety Guidelines for Hazardous Voltages (Screw Terminal and Spring Terminal Products)

    If hazardous voltages are connected to the device, take the following precautions. A hazardous voltage is a voltage greater than 42.4 V peak voltage or 60 V DC to earth ground.

    You may connect signals which may be floating at hazardous voltages only to the products with screw terminal or spring terminal connectors. Do not connect signals which may be floating at hazardous voltages to the products with DSUB, BNC, or mini XLR connectors.

    Caution Ensure that hazardous voltage wiring is performed only by qualified personnel adhering to local electrical standards.
    Caution All wiring must be insulated for the highest voltage used.
    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 (NI-9201/9215/9221) You must use the NI-9927 connector backshell kit with the product with screw terminal and the NI-9981 connector backshell kit with the product with spring terminal to ensure that the terminals are not accessible.
    Caution (NI-9202/9205/9209/9220) You must use the NI-9940 connector backshell kit with the product with spring terminal to ensure that the terminals are not accessible.
    Caution (NI-9206) You must use the NI-9941 connector backshell kit with the product with spring terminal to ensure that the terminals are not accessible.
    Caution (NI-9224/9228) You must use the NI-9939 connector backshell kit with the product with screw terminal to ensure that the terminals are not accessible.
    Caution (NI-9229/9238/9239) You must use the NI-9971 connector backshell kit with the product with screw terminal to ensure that the terminals are not accessible.

    Safety Guidelines for Hazardous Locations

    These products have been evaluated as Ex ec IIC T4 Gc equipment and are CCC certified. Each product is suitable for use within ambient temperatures of -40 °C ≤ Ta ≤ 70 °C in either nonhazardous locations or Zone 2 hazardous locations. If you are using the products in Gas Group IIC hazardous locations, you must use the device in an NI chassis that has been evaluated as Ex ec IIC T4 Gc equipment.

    Follow these guidelines if you are installing the product 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 off or the area is known to be nonhazardous.
    Caution Do not remove modules unless power has been switched off or the area is known to be nonhazardous.
    Caution Substitution of components may impair suitability for Zone 2.
    Caution Transient protection shall be provided for all modules that is set at a level not exceeding 140% of the peak rated voltage value of 85 V Channel-to-COM at the supply terminals.
    Caution For modules with maximum 60 V DC Channel-to-Earth Ground isolation, transient protection shall additionally be provided that is set at a level not exceeding 140% of the peak rated voltage value of 85 V Channel-to-Earth Ground at the supply terminals.
    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 a CCC-certified enclosure with a minimum ingress protection rating of at least IP54 as defined in GB/T3836.1.
    Caution The enclosure must have a door or cover accessible only by the use of a tool.

    Safety Voltages

    NI-9201 with Screw Terminal, NI-9201 with Spring Terminal, NI-9221 with Screw Terminal, NI-9221 with Spring Terminal

    Connect only voltages that are within the following limits:

    Channel-to-COM

    ±60 V DC maximum

    Channel-to-channel

    None

    Channel-to-earth ground

    Continuous

    250 V RMS, Measurement Category II

    Withstand

    2,300 V RMS, verified by a 5 s dielectric withstand test

    Caution Do not connect the product to signals or use for measurements within Measurement Categories III or IV.

    NI-9201 with DSUB, NI-9221 with DSUB

    Connect only voltages that are within the following limits:

    Channel-to-COM

    ±60 V DC maximum

    Channel-to-channel

    None

    Channel-to-earth

    Continuous

    60 V DC, Measurement Category I

    Withstand

    1,000 V RMS, verified by a 5 s dielectric withstand test

    Caution Do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV.

    NI-9202 with Spring Terminal

    Connect only voltages that are within the following limits:

    Maximum voltage

    Channel-to-COM

    ±30 V DC maximum, up to 6 channels at a time

    ±10.5 V DC maximum, all channels at a time

    Isolation

    Channel-to-channel

    None

    Channel-to-earth ground

    Continuous

    250 V RMS, Measurement Category II

    Withstand, up to 5,000 m

    3,000 V RMS, verified by a 5 s dielectric withstand test

    Caution Do not connect the product to signals or use for measurements within Measurement Categories III or IV.

    NI-9202 with DSUB

    Connect only voltages that are within the following limits:

    Maximum voltage

    Channel-to-COM

    ±30 V DC maximum, up to 6 channels at a time

    ±10.5 V DC maximum, all channels at a time

    Isolation

    Channel-to-channel

    None

    Channel-to-earth ground

    Continuous

    60 V DC, Measurement Category I

    Withstand, up to 2,000 m

    1,000 V RMS, verified by a 5 s dielectric withstand test

    Withstand, up to 5,000 m

    500 V RMS

    Caution Do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV.

    NI-9205 with Push-In Spring Terminal (Black/Orange Connector), NI-9220 Spring Terminal (Black Connector)

    Connect only voltages that are within the following limits:

    Maximum voltage

    Channel-to-COM

    ±30 V DC

    Isolation

    Channel-to-channel

    None

    Channel-to-earth ground

    Continuous

    250 V RMS, Measurement Category II

    Withstand up to 5,000 m

    3,000 V RMS, verified by a 5 sdielectric withstand test

    Caution Do not connect the product to signals or use for measurements within Measurement Categories III or IV.

    NI-9205 with Spring Terminal (Black Connector)

    Connect only voltages that are within the following limits:

    Maximum voltage

    Channel-to-COM

    ±30 V DC

    Isolation

    Channel-to-channel

    None

    Channel-to-earth ground

    Continuous

    250 V RMS, Measurement Category II

    Withstand

    3,000 V RMS, verified by a 5 sdielectric withstand test

    Caution Do not connect the product to signals or use for measurements within Measurement Categories III or IV.

    NI-9205 with DSUB

    Connect only voltages that are within the following limits:

    Maximum voltage

    Channel-to-COM

    ±30 V DC

    Isolation

    Channel-to-channel

    None

    Channel-to-earth ground

    Continuous

    60 V DC, Measurement Category I

    Withstand, up to 2,000 m

    1,000 V RMS, verified by a 5 s dielectric withstand test

    Withstand, up to 5,000 m

    500 V RMS

    Caution Do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV.

    NI-9206

    Connect only voltages that are within the following limits:

    Maximum voltage[1]1 Overvoltage rating for AI channels 0 to 31, one channel only, AI SENSE, and DIO.

    Channel-to-COM

    ±30 V DC

    Isolation

    Channel-to-channel

    None

    Channel-to-earth ground

    Continuous

    400 V DC, Measurement Category I

    Withstand

    2,500 V peak, verified by a 5 s dielectric withstand test

    Caution Do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV.

    NI-9209 with Spring Terminal

    Connect only voltages that are within the following limits:

    Maximum voltage

    Channel-to-COM

    ±10.2 V DC maximum

    Isolation

    Channel-to-channel

    None

    Channel-to-earth ground

    Continuous

    250 V RMS, Measurement Category II

    Withstand up to 5,000 m

    3,000 V RMS, verified by a 5 s dielectric withstand test

    Caution Do not connect the product to signals or use for measurements within Measurement Categories III or IV.

    NI-9209 with DSUB

    Connect only voltages that are within the following limits:

    Maximum voltage

    Channel-to-COM

    ±10.2 V DC maximum

    Isolation

    Channel-to-channel

    None

    Channel-to-earth ground

    Continuous

    60 V DC, Measurement Category I

    Withstand

    1,000 V RMS up to 3000 m, verified by a 5 s dielectric withstand test; 860 V RMS up to 5000 m

    Caution Do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV.

    NI-9215 with Screw Terminal, NI-9215 with Spring Terminal

    Connect only voltages that are within the following limits:

    Channel-to-COM

    ±30 V maximum

    Isolation

    Channel-to-channel

    None

    Channel-to-earth ground

    Continuous

    250 V RMS, Measurement Category II

    Withstand

    2,300 V RMS, verified by a 5 s dielectric withstand test

    Caution Do not connect the product to signals or use for measurements within Measurement Categories III or IV.

    NI-9215 with BNC

    Connect only voltages that are within the following limits:

    AI+-to-AI-

    ±30 V maximum

    Isolation

    Channel-to-channel

    None

    Channel-to-earth ground

    Continuous

    60 VDC, Measurement Category I

    Withstand

    1,500 V RMS, verified by a 5 s dielectric withstand test

    Caution Do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV.

    NI-9220 with Push-In Spring Terminal (Black/Orange Connector)

    Connect only voltages that are within the following limits:

    Maximum voltage

    Channel-to-COM

    ±30 V DC maximum

    Channel-to-channel

    None

    Channel-to-earth ground

    Continuous

    250 V RMS, Measurement Category II

    Withstand up to 4,000 m

    3,000 V RMS, verified by a 5 sdielectric withstand test

    Caution Do not connect the product to signals or use for measurements within Measurement Categories III or IV.

    NI-9220 with DSUB

    Connect only voltages that are within the following limits:

    Channel-to-COM

    ±30 V maximum

    Isolation

    Channel-to-COM

    None

    Channel-to-earth ground

    Continuous

    60 V DC, Measurement Category I

    Withstand up to 2,000 m

    1,000 V RMS, verified by a 5 s dielectric withstand test

    Caution Do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV.

    NI-9222, NI-9223

    Connect only voltages that are within the following limits:

    Maximum voltage

    Channel-to-COM

    ±30 V DC maximum

    Isolation
    Channel-to-channel

    Continuous

    60 V DC, Measurement Category I

    Withstand

    1000 V RMS, verified by a 5 s dielectric withstand test

    Channel-to-earth ground

    Continuous

    60 V DC, Measurement Category I

    Withstand

    1000 V RMS, verified by a 5 s dielectric withstand test

    Caution Do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV.

    NI-9224

    Connect only voltages that are within the following limits:

    Maximum voltage

    Channel-to-COM

    ±10.54 V DC maximum

    Overvoltage protection

    AI+ to AI-

    250 V RMS

    Channel-to-channel isolation

    Continuous, up to 2,000 m altitude

    250 V RMS, Measurement Category II

    Withstand, up to 2,000 m altitude

    1,500 V RMS, verified by a 5 s dielectric test

    Continuous, up to 5,000 m altitude

    60 V DC, Measurement Category I

    Withstand, up to 5,000 m altitude

    1,000 V RMS, verified by a 5 s dielectric test

    Channel-to-earth ground isolation

    Continuous, up to 2,000 m altitude

    250 V RMS, Measurement Category II

    Withstand, up to 2,000 m altitude

    3,000 V RMS, verified by a 5 s dielectric test

    Continuous, up to 5,000 m altitude

    60 V DC, Measurement Category I

    Withstand, up to 5,000 m altitude

    1,000 V RMS , verified by a 5 s dielectric test

    Caution If using in Zone 2 hazardous locations applications or above 2,000 m, do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV.
    Caution Do not connect the product to signals or use for measurements within Measurement Categories III or IV.

    NI-9228

    Connect only voltages that are within the following limits:

    Maximum voltage

    Channel-to-COM

    ±63.8 V DC maximum

    Overvoltage protection

    AI+ to AI-

    250 V RMS

    Channel-to-channel isolation

    Continuous, up to 2,000 m altitude

    250 V RMS, Measurement Category II

    Withstand, up to 2,000 m altitude

    1,500 V RMS, verified by a 5 s dielectric test

    Continuous, up to 5,000 m altitude

    60 V DC, Measurement Category I

    Withstand, up to 5,000 m altitude

    1,000 V RMS, verified by a 5 s dielectric test

    Channel-to-earth ground isolation

    Continuous, up to 2,000 m altitude

    250 V RMS, Measurement Category II

    Withstand, up to 2,000 m altitude

    3,000 V RMS, verified by a 5 s dielectric test

    Continuous, up to 5,000 m altitude

    60 V DC, Measurement Category I

    Withstand, up to 5,000 m altitude

    1,000 V RMS , verified by a 5 s dielectric test

    Caution If using in Zone 2 hazardous locations applications or above 2,000 m, do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV.
    Caution Do not connect the product to signals or use for measurements within Measurement Categories III or IV.

    NI-9229 with Screw Terminal

    Connect only voltages that are within the following limits:

    Maximum voltage

    Channel-to-COM

    ±62.64 V DC maximum

    Overvoltage protection

    Channel-to-COM

    ±100 V DC

    Isolation
    Channel-to-channel

    Continuous

    250 V RMS, Measurement Category II

    Withstand

    1,390 V, verified by a 5 s dielectric withstand test

    Channel-to-earth ground

    Continuous

    250 V RMS, Measurement Category II

    Withstand

    2,300 V, verified by a 5 s dielectric withstand test

    Zone 2 hazardous locations applications[2]2 Channel-to-channel and channel-to-earth ground

    60 V DC, Measurement Category I

    Caution If using in Zone 2 hazardous locations applications, do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV.
    Caution Do not connect the product to signals or use for measurements within Measurement Categories III or IV.

    NI-9229 with BNC

    Connect only voltages that are within the following limits:

    Maximum voltage

    Channel-to-COM

    ±60 V DC maximum

    Isolation
    Channel-to-channel

    Continuous

    60 V DC, Measurement Category I

    Withstand

    1,000 V, verified by a 5 s dielectric withstand test

    Channel-to-earth ground

    Continuous

    60 V DC, Measurement Category I

    Withstand

    1,000 V, verified by a 5 s dielectric withstand test

    Caution Do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV.

    NI-9238

    Connect only voltages that are within the following limits:

    Maximum voltage

    Channel-to-COM

    ±30 V DC maximum

    Channel-to-channel isolation

    Continuous, up to 2,000 m altitude

    250 V RMS, Measurement Category II

    Withstand

    1,500 V RMS, verified by a 5 s dielectric withstand test

    Continuous, 2,001 m to 5,000 m altitude

    60 V DC, Measurement Category I

    Withstand, 2,001 m to 5,000 m altitude

    1,000 V DC

    Channel-to-earth ground isolation

    Continuous, up to 2,000 m altitude

    250 V RMS, Measurement Category II

    Withstand, up to 2,000 m altitude

    3,000 V RMS, verified by a 5 s dielectric withstand test

    Continuous, 2,001 m to 5,000 m altitude

    60 V DC, Measurement Category I

    Withstand, 2,001 m to 5,000 m altitude

    1,000 V DC

    Zone 2 hazardous locations applications (Channel-to-channel and channel-to-earth ground)

    60 V DC, Measurement Category I

    Caution If using in Zone 2 hazardous locations applications or above 2,000 m, do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV.
    Caution Do not connect the product to signals or use for measurements within Measurement Categories III or IV.

    NI-9239 with Screw Terminal

    Connect only voltages that are within the following limits:

    Maximum voltage

    Channel-to-COM

    ±10.52 V DC maximum

    Overvoltage protection

    Channel-to-COM

    ±100 V DC

    Isolation
    Channel-to-channel

    Continuous

    250 V RMS, Measurement Category II

    Withstand

    1,390 V, verified by a 5 s dielectric withstand test

    Channel-to-earth ground

    Continuous

    250 V RMS, Measurement Category II

    Withstand

    2,300 V, verified by a 5 s dielectric withstand test

    Zone 2 hazardous locations applications[3]3 Channel-to-channel and channel-to-earth ground

    60 V DC, Measurement Category I

    Caution If using in Zone 2 hazardous locations applications, do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV.
    Caution Do not connect the product to signals or use for measurements within Measurement Categories III or IV.

    NI-9239 with BNC

    Connect only voltages that are within the following limits:

    Maximum voltage

    Channel-to-COM

    ±10.52 V DC maximum

    Overvoltage protection

    Channel-to-COM

    ±60 V DC

    Isolation
    Channel-to-channel

    Continuous

    60 V DC, Measurement Category I

    Withstand

    1,000 V, verified by a 5 s dielectric withstand test

    Channel-to-earth ground

    Continuous

    60 V DC, Measurement Category I

    Withstand

    1,000 V, verified by a 5 s dielectric withstand test

    Caution Do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV.

    NI-9251 with Mini XLR

    Connect only voltages that are within the following limits:

    Maximum voltage

    Channel-to-COM

    4.464 V peak maximum

    Overvoltage protection

    Channel-to-COM

    ±30 V

    Channel-to-earth ground

    ±30 V maximum, Measurement Category I

    Isolation

    Channel-to-channel

    None

    Channel-to-earth ground

    None

    Caution Do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV.

    NI-9252 with Screw Terminal

    Connect only voltages that are within the following limits:

    Maximum voltage

    Channel-to-COM

    ±10.5 V DC maximum

    Isolation

    Channel-to-channel

    None

    Channel-to-earth ground

    Continuous, up to 3,000 m altitude

    250 V RMS, Measurement Category II

    Withstand, up to 3,000 m altitude

    3,000 V RMS, verified by a 5 s dielectric withstand test

    Continuous, up to 5,000 m altitude

    60 V DC, Measurement Category I

    Withstand, up to 5,000 m altitude

    1,000 V RMS, verified by a 5 s dielectric withstand test

    Overvoltage protection

    ±30 V, between any two pins of the connector[4]4 Up to 4 channels simultaneously.

    Caution When using the product above 3,000 m or in explosive atmospheres, do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV.
    Caution Do not connect the product to signals or use for measurements within Measurement Categories III or IV at any time.

    NI-9252 with DSUB

    Connect only voltages that are within the following limits:

    Maximum voltage

    Channel-to-COM

    ±10.5 V DC maximum

    Isolation

    Channel-to-channel

    None

    Channel-to-earth ground

    Continuous, up to 3,000 m altitude

    60 V DC, Measurement Category I

    Withstand, up to 3,000 m altitude

    1,000 V RMS, verified by a 5 s dielectric withstand test

    Continuous, up to 5,000 m altitude

    60 V DC, Measurement Category I

    Withstand, up to 5,000 m altitude

    860 V RMS

    Caution Do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV.

    Installing C Series Modules

    Verify that power is not connected to the I/O connector(s) on the C Series module.

    Removing C Series Modules

    Verify that power is not connected to the I/O connector(s) on the C Series module before you remove a module from the chassis.

    Safety Compliance and Hazardous Locations Standards

    This product is designed to meet the requirements of the following electrical equipment safety standards for measurement, control, and laboratory use:

    • IEC 61010-1
    • IEC 60079-0, IEC 60079-7
    • GB/T3836.1, GB/T3836.3
    Note For safety certifications, refer to the product label or the Product Certifications and Declarations section.

    Product Certifications and Declarations

    To obtain product certifications and the DoC for NI products, visit ni.com/product-certifications, search by model number, and click the appropriate link.

    Worldwide Support and Services

    NI corporate headquarters is located at 11500 North Mopac Expressway, Austin, Texas, 78759-3504, USA.

    1 Overvoltage rating for AI channels 0 to 31, one channel only, AI SENSE, and DIO.

    2 Channel-to-channel and channel-to-earth ground

    3 Channel-to-channel and channel-to-earth ground

    4 Up to 4 channels simultaneously.