National Instruments SCC-TC02 用户手册
SCC-TC Series Thermocouple Input Modules User Guide
10
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Specifications
These specifications are typical at 25 °C unless otherwise stated.
Analog Input
Number of input channels.......................1 DIFF
Input signals............................................Thermocouples of types B, E, J,
K, N, R, S, and T
Input signal range
...................................±100 mV
Input impedance .....................................10 M
Ω powered on,
10 k
Ω powered off or overload
Bandwidth...............................................2 Hz
Amplifier Characteristics
Open thermocouple detection current.....250 nA max
1
(assuming floating thermocouple)
Common-mode rejection ratio................110 dB min
Output range
...........................................±10 V max
Transfer Characteristics
Gain ........................................................100
Gain error
................................................±0.08% max
Gain stability
...........................................±0.0005%/°C max
2
Offset error
.............................................±5 μV max (post calibration)
Offset stability
........................................±0.6 μV/°C max
Nonlinearity
............................................±0.004% max
Recommended warm-up time.................5 min
1
Temperature range is 23 °C
±5 °C.
2
Temperature range is 0 to 50 °C.