HIOKI Precision Current Clamps with Zero-Flux Technology
Accurate current measurement with flexible clamp-on design
HIOKI precision current clamps enable accurate, non-intrusive AC and DC current measurement without interrupting the circuit. Across the portfolio, they support currents from milliampere levels up to 1000 A, bandwidths up to 2 MHz, and high measurement accuracy. Select the optimum current clamp for your application, for example the CT6746A Current Clamp for currents up to 1000 A or the CT6834 with an ultra-slim design for measurements in confined areas. All models are suitable for measurements on production-ready equipment in operation.
Precision current clamps are used where accuracy, ease of use, and minimal impact on the test setup are essential, including vehicle on-board measurements (incl. WLTP), power electronics testing, efficiency analysis, and measurements in hard-to-access environments.
CT6841A
CT6841A - AC/DC High-accuracy Current Clamp, 20 A / 2 MHz
AC/DC current clamp using advanced fluxgate technology, 20A rated current, basic accuracy ±0.2% rdg., wide temperature range of -40 °C to 85 °C, wide bandwidth from DC to 2 MHz, maximum conductor diameter 20 mm, cable length 3 m
CT6834
CT6834 - Super-slim AC/DC high-accuracy Current Clamp, 500 A / 50 kHz
Ultra-slim AC/DC current clamp using advanced fluxgate technology, 500 A rated current, DC to 50 kHz frequency bandwidth, high accuracy ±0.07% rdg., wide temperature range of -40°C to +85°C, maximum conductor diameter 20 mm, cable length 5 m
CT7822
HIOKI CT7822 - Ultra-compact AC/DC Current Probe, 20 A / 100 kHz
HIOKI CT6904A high-precision AC/DC current sensor with 500 A range and 4 MHz bandwidth for accurate measurements in power electronics and test environments. Order now from HIOKI Europe.
CT6833
CT6833 - Super-slim AC/DC high-accuracy Current Clamp, 200 A / 50 kHz
Ultra-slim AC/DC current clamp using advanced fluxgate technology, 200 A rated current, DC to 50 kHz frequency bandwidth, high accuracy ±0.07% rdg., wide temperature range of -40°C to +85°C, maximum conductor diameter 20 mm, cable length 5 m
CT6831
CT6831 - Ultra-compact AC/DC Current Probe, 20 A / 100 kHz
Ultra small zero flux clamp-on AC/DC Current Probe using flux gate detection, high accuracy ±0.3 % rdg., wide temperature range -40 to 85 oC, measurable current from 1 mAup to 20 A, ME15W connector
CT6845A
CT6845A - AC/DC Current Clamp, Fluxgate, 500 A / 200 kHz
AC/DC current clamp using advanced fluxgate technology, 500A rated current, basic accuracy ±0.2% rdg., wide temperature range of -40 °C to 85 °C, bandwidth from DC to 200 kHz, maximum conductor diameter 50 mm, cable length 3 m
CT7812
CT7812 - Ultra-compact AC/DC Current Probe, 2 A / 100 kHz
Ultra-small, zero-flux clamp-on AC/DC Current Probe using flux gate detection, high accuracy ±0.3 %, max. resolution 0.1 mA, wide temperature range -40 to 85 °C, measurable current up to 2 A, designed exclusively for LR8450 Series Data Logger
CT6830
CT6830 - Ultra-compact AC/DC Current Probe, 2 A / 100 kHz
Ultra-small, zero-flux clamp-on AC/DC Current Probe using flux gate detection, high accuracy ±0.3 % rdg., wide temperature range -40 to 85 oC, measurable current from 100 µAup to 2 A, ME15W connector
CT6833-01
CT6833-01 - Super-slim AC/DC high-accuracy Current Clamp, 200 A / 50 kHz, 10 m cable
Key SpecificationsAC/DC currents up to 200 AFrequency Bandwidth DC to 50 kHzBasic accuracy: ±0.07% rdg.Operating temperature range: -40°C to +85°COutput voltage ratio 4 mV / A Unique Advantages
Clamp design with near pass-through accuracy Typical ApplicationsHigh-precision current measurement in tight spaces WLTP testing (Worldwide harmonized Light vehicles Test Procedure)
Detailed Product OverviewThe CT6833-01 AC/DC Current Clamp delivers unparalleled measurement accuracy,
achieving a basic accuracy of ±0.07% rdg. – a level typically found only in pass-through
current sensors. Based on advanced fluxgate technology, it ensures exceptional precision
and stability while enabling accurate AC/DC current measurement up to 200 A. Its ultra-slim
"Dolphin Clamp" design is optimized for tight spaces with dense wiring, such as inside
vehicles, and allows for easy installation, even in confined areas like auxiliary battery current
measurement. The clamp can accommodate conductors with a maximum diameter of 20
mm, making it versatile for a wide range of applications. Unlike many current sensors on the market, where the position of the conductor within the
clamp can impact measurement accuracy, the CT6833-01 is designed for high reproducibility,
regardless of conductor placement. Thanks to HIOKI’s precision engineering, measurement results remain stable and reliable, no matter where the conductor is positioned within the
sensor. A major challenge in long-term current measurements is temperature-induced signal drift.
While HIOKI fluxgate sensors already exhibit exceptionally low drift, this series pushes
performance even further – reducing drift to a nearly unmeasurable level. Even in extreme
conditions, such as under the bonnet of a vehicle, where temperatures can rise dramatically
during testing, the CT6833-01 maintains stable accuracy within 0.01%, ensuring highly
precise data acquisition for environmental testing and evaluation.To enhance usability and reliability in tight installations, the CT6833-01 also features an
innovative locking mechanism that prevents accidental opening during measurement. In
confined spaces, sensors are often pressed against surrounding components or squeezed
between cables, which can put unintended pressure on the clamp. With its secure locking
design, the CT6833-01 remains firmly closed, ensuring uninterrupted measurement reliability
even in demanding conditions. With a wide frequency bandwidth of 50 kHz, the CT6833-01 can accurately capture dynamic
current waveforms. This, combined with its exceptional accuracy, allows it to meet strict
testing standards such as WLTP, ensuring highly reliable measurements in automotive and
other precision testing applications. The CT6833-01 works directly with HIOKI Power Analyzers and Memory Recorders, which
supply power to the sensor via the ME15W connector. When combined with a HIOKI sensor
unit (CT9555, CT9556, or CT9557), it can also be used with oscilloscopes or other DAQ
systems, providing a voltage output ratio of 4 mV/A. The total cable length of the CT6833-01 is 10 meters, ensuring flexibility in sensor
placement. This includes 4 meters of cable between the sensor and its control box, plus an
additional 6 meters from the control box to the connector, allowing for convenient integration
into various test setups.
CT6846A
CT6846A - AC/DC High-accuracy Current Clamp, 1000 A / 100 kHz
AC/DC current clamp using advanced fluxgate technology, 1000A rated current, basic accuracy ±0.2% rdg., wide temperature range of -40 °C to 85 °C, bandwidth from DC to 100 kHz, maximum conductor diameter 50 mm, cable length 3 m
CT6843A
CT6843A - AC/DC High-accuracy Current Clamp, 200 A / 700 kHz
AC/DC current clamp using advanced fluxgate technology, 200A rated current, basic accuracy ±0.2% rdg., wide temperature range of -40 °C to 85 °C, wide bandwidth from DC to 700 kHz, maximum conductor diameter 20 mm, cable length 3 m
HIOKI Precision Current Clamp Sensor Overview
| Large Clamps up to 1 kA / 200 kHz |
Precision Clamps up to 500 A / 2 MHz |
NEW Compact Clamps up to 500 A / 50 kHz | Ultra-compact Sensors up to 20 A / 100 kHz | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Model | CT6846A | CT6845A | CT6844A | CT6843A | CT6841A | CT6834 | CT6833 | CT6831 | CT6830 |
| Rated Current | ±1000 A | ±500 A | ±500 A | ±200 A | ±20 A | ±500 A | ±200 A | ±20 A | ±2 A |
| Bandwidth | DC – 100 kHz | DC – 200 kHz | DC – 500 kHz | DC – 700 kHz | DC – 2 MHz | DC – 50 kHz | DC – 100 kHz | ||
| Basic Accuracy | ±0.2% rdg | ±0.07% rdg | ±0.3% rdg | ||||||
| Output Voltage | 2 mV/A | 4 mV/A | 10 mV/A | 100 mV/A | 4 mV/A | 10 mV/A | 100 mV/A | 1 V/A | |
| Max. Conductor Diameter | Ø 50 mm | Ø 20 mm | Ø 5 mm | ||||||