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) |
Measurement drift |
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