Wrap your carabiner with enough turns to achieve the required resolutions. I initially used 30 turns with no resolution so I doubled to 60 turns as shown below.
Next, slice/separate the wires of an extension cord in order to test/calibrate your CT sensor. If you try to sense both the load line and neutral line, the magnetic fields cancel and no current is induced.
Next, plug something into the extension cord. I used a space heater. Measure the amperage with a store bought clamp-on meter
I measured 11.8 amps with my Field Piece meter.
The field piece has been calibrated so that 1amp AC is equal to 1milivolt AC (1AAC/1mVAC). My Caribiner sensor measured 0.3 milivolt.
11.8 amps / 0.3 millivolts = 39 AAC/mVAC
If you are considering putting this around any high voltage wiring, consider wrapping all exposed metal parts in electrical tape.