Since 1991 we have been supplying the world with test and measurement equipment. At Pico we realize that your choice of test accessories can be almost as important as your choice of test equipment. Here you can purchase a variety of test and measurement accessories quickly and securely online.
Clamp-on current probes or “current clamps” enable you to measure currents without breaking the electrical circuit. Current clamps are designed with jaws that can be opened, placed around the conductor and clamped shut to form a magnetic loop around the conductor.
Current clamps offer a safe, cost-effective, simple and accurate way to take current measurements.
Our range of current clamps can be used with PicoScope Oscilloscopes and PicoLog Data Loggers, as well all major brands of oscilloscopes and multimeters.
The TA326 is an AC current probe utilizing the Rogowski coil principle, used to measure AC current up to 3000 A when used with oscilloscopes, recorders or data loggers. The flexible probe allows current measurements on hard-to-reach conductors.
Rogowski coil technology has a couple of advantages over CT (current transformer) technology: when measuring multiple phases, the phase difference is small and predictable for higher frequency harmonic analysis applications; also, Rogowski coils do not have magnetic materials to saturate and so have excellent linearity.
The probes provide a 3 V full-scale AC output proportional to the current being measured with three selectable ranges: 30 A, 300 A and 3000 A.
If the TA326 is intended for use with a PicoScope 4444 differential scope, ensure that you also purchase a TA271 D9-BNC adaptor. This can be found under the Accessories tab on this page.
| Title | Language | Issue | Size | Updated | All products | All languages | All documents | Status |
|---|---|---|---|---|---|---|---|---|
| TA325/TA326 AC current probes user’s guide | English Français Deutsch Italiano Español |
1 | 2 MB | Jan 18 2017 | English Français Deutsch Italiano Español |
open | ||
| TA325 and TA326 Flex Current Probes EU Declaration of Conformity | English | 1 | 291 KB | Mar 30 2017 | English | open |
| Product | Price | Quantity | |
|---|---|---|---|
| TA325 and TA326 flex current probe specifications | |
|---|---|
| Measuring ranges | 30 A / 300 A / 3000 A AC |
| Output sensitivity (AC coupled) | 100 mV / 10 mV / 1 mV per A |
| Accuracy (45 to 65 Hz) | ±1% of reading ±0.1 A 30 / 300 A ±1% of reading ±1 A 3000 A |
| Minimum load | 100 kΩ for specified accuracy |
| Frequency range | 10 Hz to 20 kHz (–1 dB) |
| Phase (45 to 65 Hz) | < ±1° |
| Position sensitivity | ±2% of reading |
| External field | ±0.25% of range with cable > 100 mm from the probe |
| Noise | 80 mA RMS 30 A 400 mA RMS 300 A / 3000 A |
| Temperature coefficient | ±0.1 %/°C |
| Power supply | Two AA MN1500 LR6 alkaline batteries or an external power supply (+3 V / 100 mA) |
| Battery life | 1000 hours typical (TA325) 2000 hours typical (TA326) |
| External power | Via 2.1 mm (0.08") mini power connector |
| Low battery | Indicated by an orange LED |
| Overload | Indicated by a red LED |
| Enclosure | |
| Material | ARNITE T06-200SNF, UL94 V0 |
| Degree of protection | IP40 |
| Dimensions | 110 (L) x 65 (W) x 23 (D) mm |
| Output connection | 0.5 m coax cable with a shrouded BNC connector |
| Probe | |
| Probe length | 610 mm (24”), double-insulated |
| Probe diameter | 9.9 mm (0.39”) |
| Output cable | 2 m (78.7”), probe to integrator |
| Material | Alcryn 2070 NC, LATI LATENE 7H2W V0 |
| Degree of protection | IP65 |
| General characteristics | |
| Operating temperature | –20 °C to +65 °C (–4 °F to +149 °F) |
| Storage temperature | –40 °C to +75 °C (–40 °F to +167 °F) |
| Operating humidity | 15% to 85% (non-condensing) |
| Safety standards | EN 61010-1 EN 61010-2-032 |
| EMC | EN 61326-2-2 |
| 1000 V RMS CAT III, 600 V RMS CAT IV | |
| Pollution Degree 2 (probe and integrator) | |
| 30 V maximum between output and ground | |
| RoHS and WEEE compliant | |
| Rated for continuous use | |