National Instruments FieldPoint cFP-RTD-122 Скачать руководство пользователя страница 15

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FP-RTD-122 and cFP-RTD-122

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Содержание FieldPoint cFP-RTD-122

Страница 1: ...how to install and use the National Instruments FP RTD 122 and cFP RTD 122 three wire RTD and resistance input modules referred to inclusively as the c FP RTD 122 For details on configuring and acces...

Страница 2: ...r position 1 used for the FP RTD 122 module 2 Align the FP RTD 122 alignment slots with the guide rails on the terminal base 3 Press firmly to seat the FP RTD 122 on the terminal base When the module...

Страница 3: ...he cFP RTD 122 prevent backward insertion 2 Press firmly to seat the cFP RTD 122 on the backplane 3 Using a number 2 Phillips screwdriver with a shank of at least 64 mm 2 5 in length tighten the capti...

Страница 4: ...ield to the COM terminal Do not connect the shield to any of the wires at the signal end Taking RTD Measurements with the c FP RTD 122 The c FP RTD 122 has eight input channels All eight channels shar...

Страница 5: ...xcitation wire to the EX terminal of the module and connect the other two wires to the SENSE and COM terminals Figure 4 Three Wire RTD Connections on One Channel Taking Measurements from Four Wire RTD...

Страница 6: ...re resistance in ohms In this way you can take measurements from RTDs of types that the c FP RTD 122 does not directly support such as 120 nickel RTDs and from resistive devices other than RTDs You ca...

Страница 7: ...RTD types are specified by material composition nominal resistance at 0 C and TCR The c FP RTD 122 can directly measure the temperature of platinum RTDs of either 100 or 1 000 nominal resistance These...

Страница 8: ...arization curves measure the resistance with the c FP RTD 122 and convert the resistance to temperature in the manner suggested by the RTD vendor Three Wire Compensation of Lead Resistance Errors The...

Страница 9: ...00 RTDs and 0 3 C per of mismatch in the lead resistance for 1 000 RTDs For example for 2 leads matched to 5 of each other the lead resistance mismatch is 5 2 0 1 which would cause 0 3 C of error in m...

Страница 10: ...d the inter module communication bus There is no isolation between channels unless otherwise noted If any of the channels on a module are wired at a hazardous potential make sure that all other device...

Страница 11: ...ble gases or fumes Specifications These specifications are typical for the range 40 to 70 C unless otherwise noted Gain error is calculated as a percentage of input signal value Input Characteristics...

Страница 12: ...hannel is updated every 1 08 s Physical Characteristics Indicators Green POWER and READY indicators Weight FP RTD 122 140 g 4 8 oz cFP RTD 122 110 g 3 7 oz Power Requirements Power from network module...

Страница 13: ...2 27 50 g 3 ms half sine 18 shocks at 6 orientations 30 g 11 ms half sine 18 shocks at 6 orientations Safety This product is designed to meet the requirements of the following standards of safety for...

Страница 14: ...ref nsf Mechanical Dimensions Figure 7 shows the mechanical dimensions of the FP RTD 122 installed on a terminal base If you are using the cFP RTD 122 refer to the Compact FieldPoint controller user m...

Страница 15: ...4 8521 Canada Toronto 905 785 0085 Canada Vancouver 514 685 7530 China 86 21 6555 7838 Czech Republic 420 2 2423 5774 Denmark 45 45 76 26 00 Finland 385 0 9 725 725 11 France 33 0 1 48 14 24 24 German...

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