SCXI-1503 Datasheet, PDF (3/5 Pages) National Instruments Corporation – SCXI 16-Channel RTD Module

SCXI 16-Channel RTD Module
Specifications
>> _{For complete specifications, see the NI SCXI-1503 Specifications}
manual at ni.com/manuals.
Specifications are typical at 25 °C unless otherwise noted. Specifications
do not include transducer error.
Input Characteristics
Number of channels............................
Input coupling .....................................
Input signal ranges .............................
Input overvoltage protection
Powered on.....................................
Powered off ....................................
Inputs protected..............................
CJ sensor input protection .............
16 differential
DC
±100 mV (gain = 100) or
±10 V (gain = 1)
±42 VDC
±25 V
AI<0..15>
±15 VDC powered on or off
Transfer Characteristics
Nonlinearity......................................... 0.005% FSR
Input offset error (RTI)
Gain = 1
Calibrated¹.................................. ±650 μV max
±250 μV typ
With autozero enabled² ............. ±300 μV max
±150 μV typ
Gain = 100
Calibrated¹.................................. ±25 μV max
±10 μV typ
With autozero enabled² ............. ±10 μV max
±5 μV typ
Gain error (relative to calibration reference)
Gain = 1 or 100
Calibrated¹ .......................................... 0.074% of reading max
0.02% of reading typ
1_{Assumes 1,000 point average, 25 °C ±10 °C over one year.}
2_{Assumes 1,000 point average, ±1 °C of autozero temperature.}
RTD Measurement Accuracy
Measured
Temperature °C
-100 to 0
0 to 25
25 to 100
100 to 500
500 to 1200
100 W Max °C
0.60
0.62
0.69
1.11
2.06
100 W Typ °C
0.23
0.23
0.25
0.37
0.65
1000 W Max °C
1.09
1.11
1.20
1.68
2.81
1000 W Typ °C
0.46
0.47
0.49
0.65
1.04
Notes: The accuracies in this table reflect using the module in 4-wire
mode. They do not include errors from the RTD such as lead-wire errors
when using 2- or 3-wire connections. The accuracies assume autozero
is enabled and the environmental conditions are 25 °C ±10 °C over a
one-year period.
These accuracies were computed using a standard RTD with a TCR
of 3851.
Amplifier Characteristics
Input coupling .....................................
Input impedance
Normal powered on........................
Input bias current................................
CMRR characteristics (DC to 60 Hz)
Gain 1..............................................
Gain 100..........................................
Output range .......................................
Output impedance...............................
DC
>1 GΩ
±2.8 nA
-75 dB min
-90 dB typ
-106 dB min
-110 dB typ
±10 V
91 Ω
Dynamic Characteristics
Minimum scan interval (per channel, any gain)
±0.012% accuracy .......................... 3 μs
±0.0061% accuracy ........................ 10 μs
±0.0015% accuracy ........................ 20 μs
Noise characteristics (RTI)
Gain = 1
10 Hz to 1 MHz........................... 100 μV_rms
Gain = 100
10 Hz to 1 MHz........................... 1 μV_rms
0.1 to 10 Hz ................................ 0.5 μV_pp
Filter
Cutoff frequency (-3 dB)...................... 5 Hz
NMR (60 Hz)........................................ -40 dB min
Step response characteristics (gain 1 or 100)
To 0.0015%..................................... 0.6 s
Stability
Recommended warm-up time.............
Offset temperature coefficient
Gain = 1 ..........................................
Gain = 100 ......................................
Gain temperature coefficient
(gain 1 or 100).................................
20 min
±35 μV/°C max
±10 μV/°C typ
±1.5 μV/°C max
±0.5 μV/°C typ
±15 ppm/°C max
±5 ppm/°C typ
Excitation
Channels..............................................
Current output.....................................
Accuracy..............................................
Temperature drift ................................
Output voltage compliance.................
Maximum resistive load .....................
Overvoltage protection .......................
Measurement Category ......................
16 single-ended outputs
100 μA
±0.05%
±5 ppm/°C
10 V
100 kΩ
±40 VDC
CAT I
BUY ONLINE at ni.com or CALL 800 813 3693 (U.S.)
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