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© National Instruments Corp. 23 NI 9237 Operating Instructions and Specifications
Overvoltage protection
between any two pins........................±30 V
Accuracy
Gain drift...........................................10 ppm/°C max
Offset drift
2.5 V excitation ..........................0.6 μV/V per °C
3.3 V excitation ..........................0.5 μV/V per °C
5 V excitation .............................0.3 μV/V per °C
10 V excitation ...........................0.2 μV/V per °C
Measurement Conditions
*
Percent of
Reading
(Gain Error)
Percent of
Range
**
(Offset Error)
Calibrated typ (25 °C, ±5 °C) 0.05% 0.05%
Calibrated max (–40 to 70 °C) 0.20% 0.25%
Uncalibrated typ (25 °C, ±5 °C) 0.20% 0.1%
Uncalibrated max (–40 to 70 °C) 0.60% 0.35%
*
Before offset null or shunt calibration.
**
Range equals 25 mV/V.