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The AINs have ~2.2 kΩ of series impedance and can survive ±20V. The current that will be drawn under those conditions can vary. A rough estimate would be (20 V - 14 V)2.2kΩ = 2.7 mA. The 14 V comes from the internal power rail clamp.
When measuring a shunt the current will not flow through the AIN. With 1 Ω you can measure ±10A. Just be sure to watch the common mode voltage. For proper measurement the voltage on the AINs should not exceed ±10V from the LabJack's GND.
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The AINs have ~2.2 kΩ of series impedance and can survive ±20V. The current that will be drawn under those conditions can vary. A rough estimate would be (20 V - 14 V)2.2kΩ = 2.7 mA. The 14 V comes from the internal power rail clamp.
More specs here: https://labjack.com/support/datasheets/u6/appendix-a
Thanks. Especificly, with a shunt (1 ohm). How much current could I measure without damage AIN.
When measuring a shunt the current will not flow through the AIN. With 1 Ω you can measure ±10A. Just be sure to watch the common mode voltage. For proper measurement the voltage on the AINs should not exceed ±10V from the LabJack's GND.
For more information check out our current measurement app-not. Skip the section on 4-20 mA measurements: https://labjack.com/support/app-notes/measuring-current