National InstrumentsメーカーcFP-RTD-124の使用説明書/サービス説明書
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323349A-01 October 2002 © 2002 National I nstruments Corp. Al l rights res erved. FieldPoint™, Nati onal Instruments™, NI™, and ni.com™ are trademarks of National Instruments Corpo ration. Product and company names ment ioned herein are trademark s or trade names of their respecti ve companies.
FP-RTD-124 and cFP-RTD-124 2 ni.com Installing the FP-R TD-124 The FP - R TD-124 m o unts on a FieldPoint terminal base (FP - TB - x ). Hot plug-and-play enables you to install the FP-R TD-124 onto a powered terminal base without disturbing the operation of other modules or terminal bases.
© National Instruments Corp. 3 FP-RTD-124 and cFP-RTD-124 T o install the cFP-R TD-124, refer to Figure 2 and complete the follow ing steps: 1. Align the capti ve scre ws on the cFP-R TD-124 with the holes on the backplane. The alignment keys on the cFP-R TD-124 pre vent backward insertion.
FP-RTD-124 and cFP-RTD-124 4 ni.com Wiring the [c]FP-R TD-124 The FP-TB- x terminal bases h av e connectio ns for each of the eig ht input channels on the FP-R TD- 124. The cFP-CB- x connector blocks provide the same connections for the cFP-R TD-124. T able 1 lists the terminal assignments for the signals associated with each channel.
© National Instruments Corp. 5 FP-RTD-124 and cFP-RTD-124 Figure 3 sho ws the input circuitr y on one channel. Figure 3. FP-R TD-124 Input Cir cuit T aking Measurements from Four -Wire RTDs Four -wire R TDs generally hav e two wires of one color and tw o of another color (usually red and white).
FP-RTD-124 and cFP-RTD-124 6 ni.com negati ve terminals (COM and SENSE – ). Connect the third wire to the positi ve termi nal (SENSE+). Use a short jumper wire to connect the EXCITE+ terminal to the SENSE+ terminal.
© National Instruments Corp. 7 FP-RTD-124 and cFP-RTD-124 Measuring Resistance Y ou can use the [c]FP-R TD-124 to measure resistance in ohms. In this way , you can take measurements from R TDs of types that the [c]FP-R TD-124 does not directly support (such as 120 Ω nick el R TDs) and from resistiv e devices oth er than R TDs.
FP-RTD-124 and cFP-RTD-124 8 ni.com Unfortunately , not all TCR values are as well def ined b y standards organ izations, and the behavio r of R TDs with the same TCR value may vary from vendor to v endor . The va riations are usually small, and the built-in linearization algorithms of the [c]FP-R TD-124 are appropriate for nearly all applications.
© National Instruments Corp. 9 FP-RTD-124 and cFP-RTD-124 Effects of Lead Resistance The [c]FP-R TD-124 measures resistance by driving a current through a circuit and sensing the resulting voltage.
FP-RTD-124 and cFP-RTD-124 10 ni.com connections are isolated from the backplane and the inter-module communication bus. The isolation is provided b y the module, which has optical and galvanic isolation barriers designed and tested to protect against transient fault v oltages of up to 2,300 V rms .
© National Instruments Corp. 11 FP-RTD-124 and cFP-RTD-124 Specifications These specif ications are typical fo r the range – 40 to 70 ° C unless otherwise noted. Input Characteristic s Number of channels ..................... ..... 8 ADC resolution .
FP-RTD-124 and cFP-RTD-124 12 ni.com Physical Characteristics Indicators ............ ......... ........... .......... Green POWER and READY indicators W eight FP-R TD-124 ........ ............. .......... 140 g (4.8 oz) cFP-R TD-124 ... ............ .
© National Instruments Corp. 13 FP-RTD-124 and cFP-RTD-124 Safety The [c]FP-R TD-124 is designed to meet the requirements of the follow ing standards for safety and electrical equipment for measurement, control, and laboratory use. • EN 61010-1, IEC 61010-1 • UL 3121-1 • CAN/CSA C22.
FP-RTD-124 and cFP-RTD-124 14 ni.com Mechanical Dimensions Figure 7 sho ws the mechanical dimen sions of the FP-R TD-124 installed on a terminal base. Dimensions are gi ven in millimeters [inches].
© National Instruments Corp. 15 FP-RTD-124 and cFP-RTD-124 Finland 09 725 725 11, France 01 48 14 24 24, Germany 089 741 31 30, Greece 01 42 96 427, Hong K ong 2645 3186, In dia 91 80 4190000, Israel.
デバイスNational Instruments cFP-RTD-124の購入後に（又は購入する前であっても）重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります：
National Instruments cFP-RTD-124をまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはNational Instruments cFP-RTD-124の技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。National Instruments cFP-RTD-124の取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。National Instruments cFP-RTD-124で得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
National Instruments cFP-RTD-124を既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はNational Instruments cFP-RTD-124の不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、National Instruments cFP-RTD-124に関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちNational Instruments cFP-RTD-124デバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。
