Eight-Channel Three-Wire RTD and Resistance Input Modules Operating Instructions

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.........................0.07% typ, 0.1% max
Resolution
400 Ω range.......................... 0.0061 Ω
4,000 Ω range....................... 0.061 Ω
Excitation current..............................135 ms pulses of 0.25 mA
every 1,080 ms
Input noise ........................................ ±1 bit peak-to-peak
Input bandwidth ................................3 Hz
Update rate........................................Each channel is updated
every 1.08 s
Physical Characteristics
Indicators .......................................... Green POWER and
READY indicators
Weight
FP-RTD-122 ...............................140 g (4.8 oz)
cFP-RTD-122 .............................110 g (3.7 oz)
Power Requirements
Power from network module ............350 mW
Isolation Voltage
Channel-to-channel isolation............No isolation between
channels
Transient overvoltage........................ 2,300 V
rms
Environmental
FieldPoint modules are intended for indoor use only. For outdoor
use, FieldPoint modules must be mounted inside a sealed
enclosure.
Operating temperature ......................–40 to 70 °C
Storage temperature..........................–55 to 85 °C
Humidity ...........................................10 to 90% RH,
noncondensing