National Instruments cFP-RTD-124 - Manuals

Page 3 - Align the captive screws on the cFP-RTD-124 with the holes

© National Instruments Corp. 3 FP-RTD-124 and cFP-RTD-124 To install the cFP-RTD-124, refer to Figure 2 and complete the following steps: 1. Align the captive screws on the cFP-RTD-124 with the holes on the backplane. The alignment keys on the cFP-RTD-124 prevent backward insertion. 2. Press firmly ...

Page 5 - Figure 3 shows the input circuitry on one channel.; Taking Measurements from Four-Wire RTDs; Taking Measurements from Three-Wire RTDs

© National Instruments Corp. 5 FP-RTD-124 and cFP-RTD-124 Figure 3 shows the input circuitry on one channel. Figure 3. FP-RTD-124 Input Circuit Taking Measurements from Four-Wire RTDs Four-wire RTDs generally have two wires of one color and two of another color (usually red and white). Connect the w...

Page 6 - Taking Measurements from Two-Wire RTDs

FP-RTD-124 and cFP-RTD-124 6 ni.com negative terminals (COM and SENSE–). Connect the third wire to the positive terminal (SENSE+). Use a short jumper wire to connect the EXCITE+ terminal to the SENSE+ terminal. Figure 5. Three-Wire RTD Connections on One Channel Taking Measurements from Two-Wire RTD...

Page 7 - Measuring Resistance; RTD Types

© National Instruments Corp. 7 FP-RTD-124 and cFP-RTD-124 Measuring Resistance You can use the [c]FP-RTD-124 to measure resistance in ohms. In this way, you can take measurements from RTDs of types that the [c]FP-RTD-124 does not directly support (such as 120 Ω nickel RTDs) and from resistive device...

Page 9 - Effects of Lead Resistance; POWER; Isolation and Safety Guidelines

© National Instruments Corp. 9 FP-RTD-124 and cFP-RTD-124 Effects of Lead Resistance The [c]FP-RTD-124 measures resistance by driving a current through a circuit and sensing the resulting voltage. Any resistance in the lead wires that connect to the RTD can add errors to your readings if the measure...

Page 10 - not

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 by the module, which has optical and galvanic isolation barriers designed and tested to protect against transient fault voltages of up to 2,300 V rms . F...

Page 11 - Specifications; Input Characteristics

© National Instruments Corp. 11 FP-RTD-124 and cFP-RTD-124 Specifications These specifications are typical for the range –40 to 70 °C unless otherwise noted. Input Characteristics Number of channels .......................... 8 ADC resolution ................................. 16 bits Type of ADC.......

Page 12 - Physical Characteristics; and; READY; indicators; Power Requirements; channels; Environmental; noncondensing; Shock and Vibration

FP-RTD-124 and cFP-RTD-124 12 ni.com Physical Characteristics Indicators .......................................... Green POWER and READY indicators Weight FP-RTD-124 ............................... 140 g (4.8 oz)cFP-RTD-124 ............................. 110 g (3.7 oz) Power Requirements Power from ...

Page 13 - Safety; FCC Part 15A above 1 GHz; For full EMC compliance, you must operate this; Declaration of Conformity; at

© National Instruments Corp. 13 FP-RTD-124 and cFP-RTD-124 Safety The [c]FP-RTD-124 is designed to meet the requirements of the following standards for safety and electrical equipment for measurement, control, and laboratory use. • EN 61010-1, IEC 61010-1 • UL 3121-1 • CAN/CSA C22.2 No. 1010.1 For c...

Page 14 - Mechanical Dimensions; Where to Go for Support; FieldPoint network module user manual

FP-RTD-124 and cFP-RTD-124 14 ni.com Mechanical Dimensions Figure 7 shows the mechanical dimensions of the FP-RTD-124 installed on a terminal base. Dimensions are given in millimeters [inches]. If you are using the cFP-RTD-124, refer to the Compact FieldPoint controller user manual for the dimension...