National Instruments SCC-RTD01 User Manual

SCC-RTD01 R
I M
NPUT ODULE
Conventions
»
bold
italic
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ESISTANCE
U G
SER UIDE
The SCC-RTD01 resistance temperature detector (RTD) input module
accepts up to two RTD input signals from 2-, 3-, or 4-wire RTDs of the
following types:
Pt100 (–100 to 850 °C), α = 0.00385 or 0.00392
•
Ni120 (–80 to 320 °C)
•
Cu10 (0 to 260 °C)
•
The SCC-RTD01 filters RTD inputs and passes them through a differential
amplifier with a fixed gain of 25 resulting in a maximum input voltage of
400 mVDC. The output of the amplifier passes through a three-pole, 30 Hz
Butterworth lowpass filter. The SCC-RTD01 provides a 1 mA excitation
current source for RTDs.
The following conventions are used in this guide:
This icon denotes a note, which alerts you to important information.
This icon denotes a caution, which advises you of precautions to take
to avoid injury, data loss, or a system crash. When this symbol is marked
on the product, refer to the Read Me First: Safety and Radio-Frequency
Interference document, shipped with the product, for precautions to take.
The » symbol leads you through nested menu items and dialog box options
to a final action. The sequence File»Page Setup»Options directs you to
pull down the File menu, select the Page Setup item, and select Options
from the last dialog box.
Bold text denotes items that you must select in software, such as menu
items and dialog box options. Bold text also denotes parameter names.
Italic text denotes variables, emphasis, a cross reference, or an introduction
to a key concept. This font also denotes text that is a placeholder for a word
or value that you must supply.
T
EMPERATURE
D
ETECTOR
December 2002
371072A-01