National Instruments NI 9211 Скачать руководство пользователя страница 13 | Manualshive

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National Instruments NI 9211 Скачать руководство пользователя страница 13

Figure 1.

Connecting a Thermocouple to the NI 9211

TC–

TC+

Shield

NI 9211

COM

Thermocouple

Connect the COM terminal to a common-mode voltage reference
on the thermocouple. A valid common-mode voltage reference is
a voltage that is within ±1.5 V of the common-mode voltage of
the thermocouple

Minimizing Thermal Gradients

Changes in the ambient air temperature near the front connector
or a thermocouple wire conducting heat directly to terminal
junctions can cause thermal gradients. Observe the following

NI 9211 Getting Started Guide

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Содержание NI 9211

Страница 1: ...GETTING STARTED GUIDE NI 9211 4 TC 80 mV 24 Bit 14 S s Aggregate ...

Страница 2: ... Refer to the documentation for each component in the system to determine the safety and EMC ratings for the entire system Safety Guidelines Operate the NI 9211 only as described in this document Caution Do not operate the NI 9211 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 damage...

Страница 3: ...o earth ground Continuous 250 Vrms Measurement Category II Withstand 2 300 Vrms verified by a 5 s dielectric withstand test Measurement Category II is for measurements performed on circuits directly connected to the electrical distribution system This category refers to local level electrical distribution such as that provided by a standard wall outlet for example 115 V for U S or 230 V for Europe...

Страница 4: ...ly by qualified personnel adhering to local electrical standards 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 When module terminals are hazardous voltage LIVE 42 4 Vpk 60 VDC you must ensure that devices and circuits connected to the m...

Страница 5: ...uidelines 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 ap...

Страница 6: ...9211 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 9211 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 vol...

Страница 7: ...duct specifications These requirements and limits provide reasonable protection against harmful interference when the product is operated in the intended operational electromagnetic environment This product is intended for use in industrial locations However harmful interference may occur in some installations when the product is connected to a peripheral device or test object or if the product is...

Страница 8: ...product may cause interference if used in residential areas Such use must be avoided unless the user takes special measures to reduce electromagnetic emissions to prevent interference to the reception of radio and television broadcasts Caution Emissions that exceed the regulatory requirements may occur when this product is connected to a test object Caution Changes or modifications not expressly a...

Страница 9: ...ficate or look for the Lloyd s Register mark on the product Caution In order to meet the EMC requirements for marine applications install the product in a shielded enclosure with shielded and or filtered power and input output ports In addition take precautions when designing selecting and installing measurement probes and cables to ensure that the desired EMC performance is attained NI 9211 Getti...

Страница 10: ...fications Operating temperature IEC 60068 2 1 IEC 60068 2 2 40 C to 70 C Operating humidity IEC 60068 2 78 10 RH to 90 RH noncondensing Pollution Degree 2 Maximum altitude 2 000 m Indoor use only Note Refer to the device datasheet on ni com manuals for complete specifications 10 ni com NI 9211 Getting Started Guide ...

Страница 11: ...NI 9211 Pinout TC0 TC0 TC1 TC1 TC2 TC2 TC3 TC3 NC COM 0 1 2 3 4 5 6 7 8 9 NI 9211 Getting Started Guide National Instruments 11 ...

Страница 12: ...mmon reference connection to isolated ground NC No connection TC Positive thermocouple connection TC Negative thermocouple connection Connecting a Thermocouple You can connect a shielded thermocouple to the NI 9211 12 ni com NI 9211 Getting Started Guide ...

Страница 13: ...common mode voltage reference is a voltage that is within 1 5 V of the common mode voltage of the thermocouple Minimizing Thermal Gradients Changes in the ambient air temperature near the front connector or a thermocouple wire conducting heat directly to terminal junctions can cause thermal gradients Observe the following NI 9211 Getting Started Guide National Instruments 13 ...

Страница 14: ...erminals Keep the ambient temperature as stable as possible Make sure the NI 9211 terminals are facing forward or upward Keep the NI 9211 in a stable and consistent orientation Allow the thermal gradients to settle after a change in system power or in ambient temperature A change in system power can happen when the system powers on the system comes out of sleep mode or you insert remove modules If...

Страница 15: ...datasheet on ni com manuals for more information about overvoltage protection High Vibration Application Connections If your application is subject to high vibration NI recommends that you use the NI 9932 backshell kit to protect connections to the NI 9211 NI 9211 Getting Started Guide National Instruments 15 ...

Страница 16: ...ftware CompactRIO NI CompactDAQ RELATED INFORMATION NI 9211 Datasheet NI RIO Help LabVIEW FPGA Help NI 9211 Datasheet NI DAQmx Help LabVIEW Help C Series Documentation Resources ni com info cseriesdoc Services ni com services 16 ni com NI 9211 Getting Started Guide ...

Страница 17: ...oduct Product registration facilitates technical support and ensures that you receive important information updates from NI A Declaration of Conformity DoC is our claim of compliance with the Council of the European Communities using the manufacturer s declaration of conformity This system affords the user protection for electromagnetic compatibility EMC and product safety You can obtain the DoC f...

Страница 18: ...ucts technology refer to the appropriate location Help Patents in your software the patents txt file on your media or the National Instruments Patent Notice at ni com patents You can find information about end user license agreements EULAs and third party legal notices in the readme file for your NI product Refer to the Export Compliance Information at ni com legal export compliance for the NI glo...

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