NIOPERATING INSTRUCTIONS AND SPECIFICATIONS NI 9505

This document describes how to use the National Instruments 9505 

module and includes specifications and pin assignments for the 

NI 9505.

Note The safety guidelines and specifications in this 

document are specific to the NI 9505. The other 

components in the system may not meet the same safety 

ratings and specifications. Refer to the documentation for 

each component in the system to determine the safety 

ratings and specifications for the entire system.

Caution This product may cause radio interference in 

a domestic environment, in which case supplementary 

mitigation measures may be required.

Related Information

Safety Guidelines

Operate the NI 9505 only as described in these operating 

instructions.

Safety Guidelines for Hazardous Locations

The NI 9505 is suitable for use in Class I, Division 2, Groups A, B, 

C, D, T4 hazardous locations; Class I, Zone 2, AEx nA IIC T4 and 

Ex nA IIC T4 hazardous locations; and nonhazardous locations 

only. Follow these guidelines if you are installing the NI 9505 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 Class I, Division 2.

Caution For Division 2 and Zone 2 applications, install 

the system in an enclosure rated to at least IP 54 as defined 

by IEC/EN 60079-15.

Caution For Division 2 and Zone 2 applications, install a 

protection device between the input signal and the Vsup 

pin. The device must prevent the Vsup-to-channel voltage 

from exceeding 42 V if there is a transient overvoltage 

condition.

Special Conditions for Hazardous Locations Use in 

Europe and Internationally

This equipment has been evaluated as Ex nA IIC T4 Gc equipment 

under DEMKO Certificate No. 07 ATEX 0626664X and is IECEx 

UL 14.0089X certified. Each module is marked II 3G and is 

suitable for use in Zone 2 hazardous locations, in ambient 

temperatures of -40 °C  Ta  70 °C. If you are using the NI 9505 

in Gas Group IIC hazardous locations, you must use the device in 

an NI chassis that has been evaluated as Ex nC IIC T4, Ex IIC T4, 

Ex nA IIC T4, or Ex nL IIC T4 equipment.

Caution You must make sure that transient disturbances 

do not exceed 140% of the rated voltage

Caution The system shall only be used in an area of not 

more than Pollution Degree 2, as defined in IEC 60664-1.

Caution The system shall be mounted in an 

ATEX/IECEx-certified enclosure with a minimum ingress 

protection rating of at least IP54 as defined in 

IEC/EN 60079-15.

Caution The enclosure must have a door or cover 

accessible only by the use of a tool.

Electromagnetic Compatibility Guidelines

This product was tested and complies with the regulatory 

requirements and limits for electromagnetic compatibility (EMC) 

as stated in the product specifications. These requirements and 

limits are designed to provide reasonable protection against 

harmful interference when the product is operated in its intended 

operational electromagnetic environment.

This product is intended for use in industrial locations. As such, 

there is no guarantee that harmful interference will not occur in 

a particular installation, when the product is connected to a test 

object, or if the product is used in residential areas. To minimize

the potential for the product to cause interference to radio and 

television reception or to experience unacceptable performance 

degradation, install and use this product in strict accordance with 

the instructions in the product documentation.

Furthermore, any changes or modifications to the product not 

expressly approved by National Instruments could void your 

authority to operate it under your local regulatory rules.

Caution To ensure compliance with the applicable 

regulatory requirements, product installation requires 

either special considerations or user-installed, add-on 

devices. See the product installation instructions for 

further information.

Caution The inputs/outputs of this product can be 

damaged if subjected to Electrostatic Discharge (ESD). To 

prevent damage, industry-standard ESD prevention 

measures must be employed during installation, 

maintenance, and operation.

Special Conditions for Marine Applications

Some modules are Lloyd’s Register (LR) Type Approved for 

marine applications. To verify Lloyd’s Register certification, go 

to ni.com/certification and search for the LR certificate, or 

look for the Lloyd’s Register mark on the module.

Caution To meet radio frequency emission requirements 

for marine applications, use shielded cables and install the 

system in a metal enclosure. Suppression ferrites must be