NI WSN-3226 User Guide and Specifications
26
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Normal mode rejection, filter characteristics
Overvoltage protection...........................................±30 VDC
Voltage Input
Nominal range................................................±10 VDC
Input impedance.............................................1 M
Ωκ
Noise ......................................................................30
μ
V
rms
Voltage Accuracy
Gain drift........................................................11 ppm/°C
Offset drift......................................................90
μ
V/°C
Resistance Input
RTD Temperature Accuracy
*
Filtering Strength
Filter Rejection
High rejection
–60 dB at 50 and/or 60 Hz, ±1 Hz
Low power
–30 dB at 50 and/or 60 Hz, ±1 Hz
Measurement Conditions
Percent of Reading
(Gain Error)
Percent of Range
∗
(Offset Error)
Typical, 25 °C, ±5 °C
±0.02%
±0.01% (±1 mV)
Maximum, –40 °C to 70 °C
±0.2%
±0.1% (± 10 mV)
*
Range equals 10 V
Nominal Range
Excitation Current
10 to 400
Ω
1 mA
20 to 4000
Ω
350
μ
A
250 to 100 k
Ω
20
μ
A
Range
Measurement
Conditions
Typical
(25 °C, ±5 °C)
Maximum,
(–40 °C to 70 °C)
Temperature
Drift
Noise
Pt100
–200 °C to 150 °C
150 °C to 850 °C
0.2 °C
0.3 °C
1 °C
2.7 °C
0.017 °C/°C
0.028 °C/°C
0.01 °C
rms
Pt1000
–200 °C to 150 °C
150 °C to 850 °C
0.1 °C
0.2 °C
0.7 °C
2 °C
0.005 °C/°C
0.013 °C/°C
0.01 °C
rms
*
Up to 5 m of 22 AWG copper leads, 5% lead length mismatch.
