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juju avatar image
juju asked

What is the resolution and accuracy of the Smartshunt 500/50mV ?

I´m using SmartShunt 500A/50mv for monitoring my consumption in my camper and the SOC of the LiFePo Battery. I use victron connect and VenusOS on Raspi.

As I see different values on my BMS App and VictronConnect specially with low current values my question is about accuray and resolution of SmartShunt values . What kind of AC/DC converter is used in the SmartShunt electronic? Some people speak about a resolution of 10mA but with a 16bit AC/DC converter only 15mA is possible or am I wrong?.

SmartShunt
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klim8skeptic avatar image
klim8skeptic answered ·

Smart Shunt data sheet.

Voltage resolution of +/- 10mV @ 0.3% accuracy.

Current resolution of +/- 10mA @ 0.4% accuracy.

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juju avatar image
juju answered ·

If I understand right with a real current f.e. 50mA with +/- 0,4% accuracy (500A) i could get a value between > -2A < +2A ?

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klim8skeptic avatar image klim8skeptic ♦ commented ·

Yes. -/+ 2a deviation/error at 500a current.

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iand avatar image iand commented ·

No, "accuracy" here means "gain error" -- so +/-2A on 500A, +/-1A on 250A and so on. What happens with very small currents is "offset error" which is specced as <20mA.

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juju avatar image juju iand commented ·

1. answer YES

2. answer NO

????

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juju avatar image
juju answered ·

1. answer YES

2. answer NO

????

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klim8skeptic avatar image klim8skeptic ♦ commented ·
Yes.
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