National Instruments cFP-RTD-122 - Manuals

Page 3 - Align the captive screws on the cFP-RTD-122 with the holes

© National Instruments Corp. 3 FP-RTD-122 and cFP-RTD-122 To install the cFP-RTD-122, refer to Figure 2 and complete the following steps: 1. Align the captive screws on the cFP-RTD-122 with the holes on the backplane. The alignment keys on the cFP-RTD-122 prevent backward insertion. 2. Press firmly ...

Page 5 - Taking Measurements from Three-Wire RTDs; Taking Measurements from Four-Wire RTDs

© National Instruments Corp. 5 FP-RTD-122 and cFP-RTD-122 Figure 3. [c]FP-RTD-122 Input Circuitry Taking Measurements from Three-Wire RTDs Three-wire RTDs often have a wire of one color (usually white, sometimes red) for positive excitation, and two wires of another color (usually red, sometimes bla...

Page 6 - Taking Measurements from Two-Wire RTDs; Measuring Resistance Directly; nickel; error for the affected channels. The

FP-RTD-122 and cFP-RTD-122 6 ni.com Figure 5. Four-Wire RTD Connections on One Channel Taking Measurements from Two-Wire RTDs Connect either wire of a two-wire RTD to the EX+ terminal and the other wire to the COM terminal, and connect a short jumper wire between the COM and SENSE terminals. Figure ...

Page 7 - RTD Types

© National Instruments Corp. 7 FP-RTD-122 and cFP-RTD-122 Converting Resistance Measurements to Temperature Measurements The [c]FP-RTD-122 has built-in linearization algorithms for platinum RTDs of either 100 or 1,000 Ω nominal resistance, and for six TCR (or alpha, α ) values. The TCR is the averag...

Page 9 - Status Indicators; POWER

© National Instruments Corp. 9 FP-RTD-122 and cFP-RTD-122 effects of the leads. The only residual errors are those caused by mismatching the EX+ and COM leads. Most RTDs have lead resistances within 5% of each other, so the compensation of the [c]FP-RTD-122 corrects for 95% or more of the errors int...

Page 10 - Upgrading the FieldPoint Firmware; Isolation and Safety Guidelines; not

FP-RTD-122 and cFP-RTD-122 10 ni.com Upgrading the FieldPoint Firmware You may need to upgrade the FieldPoint firmware when you add new I/O modules to the FieldPoint system. For information on determining which firmware you need and how to upgrade your firmware, go to ni.com/info and enter fpmatrix ...

Page 11 - Specifications; Input Characteristics

© National Instruments Corp. 11 FP-RTD-122 and cFP-RTD-122 • Operate the [c]FP-RTD-122 only at or below Pollution Degree 2. Pollution Degree 2 means that only nonconductive pollution occurs in most cases. Occasionally, however, a temporary conductivity caused by condensation must be expected. • Refe...

Page 12 - Physical Characteristics; Power Requirements; Environmental

FP-RTD-122 and cFP-RTD-122 12 ni.com Offset error, 4,000 Ω range 15 to 35 °C ........................... 0.2 Ω typ, 0.7 Ω max – 40 to 70 °C ......................... 0.8 Ω typ, 4.0 Ω max Gain error 15 to 35 °C ........................... 0.01% typ, 0.02% max– 40 to 70 °C ......................... 0....

Page 13 - Shock and Vibration; Safety; FCC Part 15A above 1 GHz; For EMC compliance, operate this device with

© National Instruments Corp. 13 FP-RTD-122 and cFP-RTD-122 Maximum altitude............................. 2,000 m; at higher altitudes the isolation voltage ratings must be lowered Pollution Degree .............................. 2 Shock and Vibration These specifications apply only to the cFP-RTD-122...

Page 14 - CE Compliance; Refer to the Declaration of Conformity (DoC) for; Declarations of Conformity Information; at; Mechanical Dimensions; Where to Go for Support; FieldPoint network module user manual

FP-RTD-122 and cFP-RTD-122 14 ni.com CE Compliance This product meets the essential requirements of applicable European Directives, as amended for CE Marking, as follows: Low-Voltage Directive (safety)......... 73/23/EEC Electromagnetic Compatibility Directive (EMC) ............................... 8...

Page 15 - Go to

© National Instruments Corp. 15 FP-RTD-122 and cFP-RTD-122 Go to ni.com/support for the most current manuals, examples, and troubleshooting information. For telephone support in the United States, create your service request at ni.com/ask and follow the calling instructions or dial 512 795 8248. For...