AMP don't show up

[Hydrologist]

Hey,

Looking at my sockets using the PLC I noticed that some of my outlets that are on (functioning) are not registering any amperage. It looks like the amperage shows up further down on another socket.

Any ideas why that is?

Thanks,
Dave

[this is me]

Maybe it's drawing too little current for display.
I know the current on my tunze don't display anything at low speed. When I ramp it up a bit it gets to 0.1A.