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automotive accessories - current clamp

Overview

The PP266 current clamp is ideal for use with a PicoScope automotive oscilloscope to display starter current waveforms, charging currents and for performing quick compression tests.

The current clamp can measure up to 600 A  (AC or DC). In use there is no need to break into the circuit or disturb the isolation as the opening jaws simply clamp around the current carrying conductor. No electrical contact is required.

These current clamps have been designed for use with PicoScope oscilloscopes and feature additional screening to reduce noise pickup.  If you require current clamps for use with other oscilloscopes or multimeters then visit http://accessories.picotech.com/current-clamps.html.

Order

600 A AC/DC Current Clamp
PP266 - In stock
£99·00 US$163·35 €119,79

Connecting the Current Clamp

The PP266 current clamp features a BNC connector and can be plugged directly into the PicoScope.

Once connected to the PicoScope, switch the current clamp on (green LED should light) and then clamp the jaws around the current carrying conductor as shown.

Advice for Low Current Measurement

Although the current clamp is designed primarily for measuring ‘high’ currents, the high resolution and flexible input ranges of the PicoScope PC Oscilloscope allow much lower currents to be measured than with most automotive oscilloscopes.

To make measurements at low currents, the following advice may help:

  • Before connecting the clamp, use the zero adjust wheel to trim out any offset
  • If possible, loop a number of turns of the cable to be measured through the jaws. The actual current is the measured value divided by the number of turns
  • At low currents, noise pickup from ignition / injectors etc may be a problem. Keep the clamp and its connecting cable as far away from the noise sources as possible

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