National Instruments FP-RTD-122 User Manual

Features

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323348B-01

April 2003

© 2002–2003 National Instruments Corp. All rights reserved.

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FieldPoint Operating Instructions

FP-RTD-122 and
cFP-RTD-122

Eight-Channel Three-Wire RTD and
Resistance Input Modules

These operating instructions describe 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 accessing the
[c]FP-RTD-122 over a network, refer to the user manual for the
FieldPoint network module you are using.

Features

The [c]FP-RTD-122 is a FieldPoint RTD and resistance input
module with the following features:

Inputs for 100 and 1,000

Ω platinum RTDs (resistance

temperature detectors)

Built-in linearization for six TCR (temperature coefficient of
resistance, or alpha) values of RTDs

Direct resistance measurements in 400 and 4,000

Ω ranges

True three-wire compensation

16-bit resolution

Filtering against 50 and 60 Hz noise

Hot swappable

2,300 V

rms

transient overvoltage protection

–40 to 70 °C operation

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