DCFlex Current Probe
The DCflex is an easy to use, low cost, thin and clip-around DC current probe. It is suitable for measuring large DC currents of >2kA.
The DCflex takes a single shot measurement of the DC current with a typical accuracy of ±1%. It is important to understand that the DCflex does not provide a continuous measurement of DC current.
The DC current is displayed on a small LCD display on the front of the electronics enclosure. Alternatively the output can be viewed on a DMM or oscilloscope via a BNC socket on the front of the enclosure, a feature that is useful if the DC current measured has a ripple component which needs to be measured.
Press the reset button Null the offset to zero
Clip the probe around the busbar
Take a reading
|Peak current (FS)||10kA, 20kA, 30kA, 40kA (higher custom ratings available)|
|Output (FS)||2.0V peak|
|Accuracy (typ.)|| ± 0.4% of reading - Calibration
Calibrated to ±0.4% with conductor central in the Rogowski loop – cal. certificate supplied
±0.5% of reading – Conductor position accuracy
Typical variation with the position of a 20cm2 bus-bar in the Rogowski coil loop conductor position
0.1% of full scale – LCD display error
10.0Ap-p – Uncertainty due to noise
(e.g. for the 10kA version 0.1% of FS, and for the 40kA version 0.025% of FS)
0.025% per second of reading - Set-up drift
From reset to clipping the coil into its socket around the bus-bar
< 5.0A /sec - Output drift
From clipping the coil into its socket to taking a reading
|Operating temperature range||0℃ to +40℃ (Integrator electronics)
–10℃ to +120℃ (Coil and cable)
|Coil Lengths||1000mm or 2000mm (custom lengths available)|
|Coil thickness||8.5mm max.|
|Peak coil insulation||2kV peak|
|Cable Length (coil to integrator)||1.5m (custom lengths available)|
|Power Supply||‘B’ Battery 4 x AA (1.5V standard alkali batteries)
Plus - 2.1mm socket for 12V (±10%) DC input
|Display||1.999V max output (4 digit display 0.001V resolution)
-also- BNC socket to plug output directly into DMM, scope, etc.
Some typical applications include