Reliable current sensors for logging and monitoring
General sensors
HIOKI’s general-purpose current sensors are ideal for power quality analysis, current logging, and AC/DC measurement up to 100 kHz. They combine dependable performance with compact or flexible form factors at a practical price.
Use the CT7131 for cabinet-level measurements, or choose flexible Rogowski coils like the CT7045 for installations in tight environments. For broader current and frequency ranges, the CT7736 offers robust AC/DC measurement performance.
Most sensors use HIOKI’s PL14 connector and can be linked to Memory Recorders, loggers, and scopes – or to BNC instruments using the L9910 adapter.
Explore the full lineup to find the right sensor for your application.
9010-50
9010-50 - AC Current Probe
Economical Clamp Sensor for waveform recording, 40 to 1kHz, 10 to 500 A AC, +/-2%rdg. +/-1%f.s., 6 ranges, 46 mm core diameter, BNC output terminal
9018-50
9018-50 - AC Current Probe
Superior Clamp Sensor for waveform recording and analyzing harmonics, 40 Hz to 3 kHz, 10 to 500A AC, +/-1.5%rdg. +/-0.1%f.s., 46 mm diameter, BNC output terminal
9132-50
9132-50 - AC Current Probe
The 9132-50 Clamp-on Probe is a versatile current sensor designed for accurate AC current measurements up to 1000 A. This clamp-on probe allows for non-intrusive measurements on live wires without needing to cut the conductor, making it ideal for industrial applications, power distribution analysis, and electrical diagnostics.The 9132-50 features a wide conductor diameter capacity and a BNC connector for easy integration with recorders or testers, ensuring high precision and ease of use.Technical Details: Measuring Range: 20/50/100/200/500/1000 A AC Output Voltage: 0.2 V full scale Maximum Rated Current: 1000 A rms Maximum Rated Voltage to Earth: 600 V AC (CAT III) Conductor Diameter: Less than 55 mm, or 80 mm × 20 mm busbar Basic Accuracy (45 Hz to 66 Hz): ±3% rdg. ±0.2% f.s.Frequency Characteristics: 40 Hz to 1 kHz, adds ±1% to basic accuracy Output Resistance: 160 Ω ±10% (20 A range) Dimensions: 100 mm (W) × 224 mm (H) × 35 mm (D) Weight: Approx. 600 g Cable Length: Approx. 3 m Output Connector: BNC Operating Temperature: -10°C to 50°C Storage Temperature: -10°C to 60°C
9290-10
9290-10 - CLAMP ON ADAPTER
The 9290-10 is a clamp-on adapter rated for 1000A AC (1500A AC for 5 minutes) and features a 10:1 CT ratio to expand the measurement range of normal clamp ammeters. In addition to the large clamp diameter, good frequency bandwidth and accurate phase response, the CT reliably provides Hioki clamp on power meters with expanded range and large current measurements. Key Features:Rated primary current: 1,000 A AC continuously (1,500 A for 5 minutes) CT ratio: 10:1 Phase accuracy: ±1.0° or less Basic accuracy: 1.5% Frequency characteristic: 20 Hz to 5 kHz Possible core diameters: 55-80 mm x 20 mm
9660
9660 - CLAMP ON SENSOR
The 9660 Clamp On Sensor is designed for measuring AC currents with a rated measurement range of 100A.
It is commonly used with power quality analyzers, power meters, and similar devices for load current measurements.
With its compact design the sensor fits into narrow spaces and is ideal for use in commercial power lines and inverter devices. Technical Details: Measurement range: 100A AC (max continuous 130A, 45-66 Hz) Output rate: 1 mV AC per A Accuracy: ±0.3% of reading (45-66 Hz) Phase accuracy: ±1° (45 Hz to 5 kHz) Connector type: BNC Cable length: 3 meters Measurement category: CAT III 300VAC Max. core diameter: 15 mm
9661
9661 CLAMP ON SENSOR
The Hioki 9661 Clamp-On Sensor is designed to measure AC current up to 500 A with high precision. It features a voltage output, making it ideal for use with recorders or other instruments. The compact design with a 46 mm conductor diameter capacity ensures flexibility in various electrical environments. The sensor is robust, complying with CAT III 600V safety standards, making it safe for use in industrial settings. Technical Details: Rated current: AC 500 A Output rate: AC 1 mV/A Amplitude accuracy: ±0.3% rdg. ±0.01% f.s. (500 A, 45 Hz - 66 Hz, at jaw center) Phase accuracy: ±0.5° (45 Hz - 5 kHz) Frequency range: 40 Hz - 5 kHz Maximum current: 550 A (continuous) Dielectric strength: AC 7060 V (for 1 minute)Conductor diameter: 46 mm or less Operating temperature: 0°C to 50°C (80% RH or lower, non-condensing) Storage temperature: -10°C to 60°C Safety standards: EN61010, CAT III 600V Dimensions: 78 W x 152 H x 42 D mm Weight: Approx. 380 g
• Cable length: 3 m
CM7290
CM7290 - Display unit for current clamps (CT7600 and CT7700 series)
The CM7290 is the display and output unit for the CT7600 and CT7700 series AC/DC current sensors, providing a stand-alone clamp-on meter for field use or enabling waveform signals to be output to a Hioki chart recorder or logger for further analysis. Power supply and signal output for CT7000 series current sensor Simultaneous dual display of measured values, frequency and output rateFour output formats to output data to logger or other devices (via display unit) Supports AC adapter, AA alkaline batteries and external power supply
CT6280
CT6280 - AC FLEXIBLE CURRENT SENSOR
AC flexible Current Sensor for HIOKI CM3281, CM3289, CM3291 and 3280-10F AC clamp meters. Technical Details: Maximum input current: 4200 A AC, continuous (50 Hz to 60 Hz) Max. core jaw diameter: 130 mm (5.12 in) Cable length 800 mm (31.5 in)
CT7045
CT7045 - AC flexible current transformer
AC flexible Current Sensor, 10 Hz to 50 kHz (+/-3dB), 6000A AC, 180 mm diameter, PL14 terminal
CT7126
CT7126 - AC Current Probe
The CT7126 AC Current Sensor is a compact, reliable solution for accurate AC current measurement. Ideal for power measurement and analysis, the sensor is designed to meet the needs of various industrial applications. Its compact form factor allows for easy handling, while its durable construction ensures precise and consistent performance. Technical Specifications: Measurement Range: 60 A AC Frequency Range: 40 Hz to 5 kHzBasic Accuracy: ±0.3% rdg. ±0.01% f.s. Maximum Conductor Diameter: 15 mm Operating Temperature: -10°C to 50°C Cable Length: 2.5 m Safety Category: 300 V CAT III Output connector: Hioki PL14 Connector
CT7131
CT7131 - AC Current Probe
The CT7131 AC Current Sensor is a versatile tool designed for accurate AC current measurements in various industrial applications. With a measurement range of up to 100 A, it provides reliable and precise performance for power analysis and current monitoring. Its compact design ensures easy handling and integration with Hioki measuring instruments, making it ideal for professionals seeking dependable measurement solutions. Technical Specifications: Measurement Range: 100 A ACFrequency Range: 40 Hz to 5 kHz Basic Accuracy: ±0.3% rdg.±0.02% f.s. Maximum Conductor Diameter: 15 mm Operating Temperature: -10°C to 50°C Cable Length: 2.5 mSafety Category: 300 V CAT III Output Connector Type: Hioki PL14 connector
CT7136
CT7136 - AC Current Probe
The CT7136 AC Current Sensor is designed for high-accuracy current measurements up to 600 A, making it ideal for industrial applications where large currents and high precision are required. Its robust build and wide frequency range ensure reliable performance, even in demanding environments. The sensor easily integrates with Hioki measuring instruments, allowing for seamless data collection and analysis. Technical Specifications: Measurement Range: 600 A ACFrequency Range: 40 Hz to 5 kHz Accuracy / Amplitude Accuracy: ±0.3% rdg. ±0.01% f.s. Maximum Conductor Diameter: 46 mm Operating Temperature: -10°C to 50°C Cable Length: 2.5 m Safety Category: 1000 V CAT III, 600 V CAT IV Output Connector Type: Hioki PL14 connector
CT7642
CT7642 - AC/DC Current Probe
The Hioki CT7642 is a high-capacity AC/DC current sensor capable of measuring currents up to 2000 A. It operates over a wide frequency range from DC to 10 kHz, making it ideal for power electronics and waveform analysis. With a large conductor diameter of 55 mm, it is designed for industrial applications requiring precise, high-current measurements.The sensor provides high accuracy of ±1.5% for DC measurements and maintains performance across varied environmental conditions. Compatible with Hioki's Memory Recorders and data loggers, the CT7642 ensures reliable data acquisition for long-term monitoring.Technical Information:Measurement range: 2000 A AC/DC Frequency range: DC to 10 kHz Maximum conductor diameter: 55 mm Accuracy: ±1.5% for DC (45 Hz to 66 Hz) Operating temperature: −25°C to 65°C Safety category: CAT III 1000 V / CAT IV 600 VOutput connector: HIOKI PL14
CT7731
CT7731 - AC/DC Current Probe
The Hioki CT7731 is a versatile AC/DC current sensor designed for accurate measurements up to 100 A. With a wide frequency range from DC to 5 kHz, it is perfect for waveform analysis and real-time monitoring in various applications. The CT7731’s compact design and 33 mm conductor diameter allow for easy installation in confined spaces. It features high precision with an accuracy of ±1.0% for DC measurements and ensures reliable performance in fluctuating temperature conditions. The sensor is compatible with Hioki's Memory Memory recorder and data loggers for efficient data collection and analysis. Technical Information: Measurement range: 100 A AC/DC Frequency range: DC to 5 kHz Maximum conductor diameter: 33 mm Accuracy: ±1.0% for DC (45 Hz to 66 Hz) Operating temperature: −25°C to 65°C Safety category: CAT III 1000 V / CAT IV 600 V Output connector: HIOKI PL14
CT7736
CT7736 - AC/DC current clamp
The Hioki CT7736 is a high-performance AC/DC current sensor capable of measuring currents up to 600 A. With a frequency range from DC to 5 kHz, it is ideal for waveform analysis and high-current applications. The sensor features a compact design with a 33 mm conductor diameter, making it easy to install in various environments.Offering high accuracy of ±2.0% for DC measurements, the CT7736 is built for stable performance in fluctuating temperatures. It is compatible with Hioki's Memory Recorders and data loggers for precise and efficient data collection. Technical Information: Measurement range: 600 A AC/DCFrequency range: DC to 5 kHz Maximum conductor diameter: 33 mm Accuracy: ±2.0% for DC (45 Hz to 66 Hz) Operating temperature: −25°C to 65°CSafety category: CAT III 1000 V / CAT IV 600 V Output connector: HIOKI PL14