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Current clamps &a...
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Manual Accessories & Sensors Technical Reference Manual
Manual DSI 5A Technical Reference Manual
Brochure Power Analyzer Applications Brochure
Manual Power Solutions Manual

Current Sensors and Transducers
FOR High-accuracy CURRENT MEASUREMENT

High-accuracy sensors for AC/DC current measurement and power analysis. From current clamps to high-precision zero flux current transducers and Rogowsky coils.

Our current transducers are a perfect fit for our data acquisition systems and can precisely measure AC/DC current with up to 0.03% accuracy. TEDS equipped for automatic detection and setup.

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High-accuracy Current Sensors and Transducers from Dewesoft
Current
Current
TEDS compatible
TEDS compatible
-40°C to +85°C
-40°C to +85°C

Main Features

  • AC/DC CURRENT MEASUREMENT: Dewesoft offers high-accuracy zero-flux current transducers, Rogowski coils, current clamps, and shunts for AC and DC current measurement.
  • HIGH ACCURACY: Highly precise zero flux current transducers or fluxgate compensated clamps are a perfect fit for the most demanding power measurements for E-mobility and electric motor and inverter testing applications.
  • UP TO 30 000 A: We offer a very wide range of current measurement ranges up to 30 000 (30 thousand) A.
  • -40°C to +85°C: Our current transducers can operate in a wide temperature range. This is ideal for winter (-40°C) or summer climate testing (+85°C).
  • INTEGRATED SENSOR POWER SUPPLY: The majority of the current transducers can be powered directly out of the Dewesoft data acquisition devices, such as SIRIUS, SIRIUS XHS, R2DB, R8, or KRYPTON. For current transducers with a higher power demand such as zero flux transducers and fluxgate transducers an MCTS is required, this device can be integrated into an all in one device or be free-standing in the world-renowned SIRIUS chassis.
  • TEDS COMPATIBILITY: The majority of current transducers are TEDS IEEE1451.4​​​​​​​ compatible, which makes them plug and play. Connecting the current transducer to the DAQ device will initiate automatic sensor recognition and settings will be configured automatically. Current transducers with multiple measurement ranges are unfortunately not TEDS IEEE 1451.4 compatible and these have to be manually set up in the software.
  • FLEXIBLE: There are more than 1000 different current sensors are available on the market. If you want to connect your own current sensors, we are delighted to help you here. Dewesoft DAQ systems allow connecting any type of current transducers.
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Zero-flux Transducers

Dewesoft IT series of zero-flux transducers offer highly precise current measurements with linearity below 0.002% ranging from 60 A to 1000 A RMS, featuring up to 800 kHz bandwidth which makes them perfect for E-Mobility and inverter motor measurements.

Use integrated Dewesoft SIRIUS PWR-MCTS2 power supply for powering these current transducers directly from Dewesoft instruments without any external power supply.

Please see the full technical specification for more details.

Zero-flux Transducers

Iron Core Current Clamps

The iron-core current clamp works on the principle of a transformer. Depending on the number of windings on the primary side compared to the secondary side (turns ratio), a certain current will be induced on the secondary side. Like any transformer, this only works for measuring AC current.

The DS-CLAMP-xxAC offers measurement ranges from 5 ACRMS up to 1000 ACRMS, with a bandwidth up to 10kHz. Measurement accuracy is from 0,3% to 3,5% depending on the measurement range.

Iron core clamps offer operating temperatures from -40°C to +70°C, and the ability to measure coil diameters from 50 mm up to 52 mm depending on the model.

Iron Core Current Clamps

Hall Compensated Current Clamps

The Hall Effect is conveniently used to measure both the AC and DC current. The advantages of hall-compensated AC/DC current clamps are the high accuracy, a high bandwidth, the measurement of AC and DC currents and the circuit doesn't need to be opened.

The DS-CLAMP-xxDC offers measurement ranges up to 1800 A DC and ACrms, with a bandwidth up to 100 kHz depending on the model.

Hall compensated clamps offer measurement accuracy from 1% to 3,5% depending on the measurement range. Operating temperatures from 15°C to 85°C, and the ability to measure coil diameters of up to 32 mm depending on the model.

Hall Compensated Current Clamps

Flux Gate Current Clamps

Fluxgate current sensors make use of a high permeability magnetic core in order to ascertain the magnetic field that is produced as the current flows through a conductor. Fluxgate technology depends on a negative feedback circuit, including a magnetic circuit. This is done by reverting a current back through the feedback coil so that the magnetic flux can be canceled out. The magnetic flux is caused in the coil by the current that is measured. This decreases the effect of the material’s magnetic nonlinearity, as it is compensated and can be kept low.

The DS-CLAMP-xxDC offers measurement ranges up to 1000 A DC and ACrms, with a bandwidth up to 500 kHz depending on the model.

They offer excellent accuracy of 0,3% depending on the measurement range. Operating temperatures from -40°C to 85°C, and the ability to measure coil diameters of up to 50 mm depending on the model.

These current transducers require a separate PWR-MCTS2 power supply unit.

Flux Gate Current Clamps

Rogowsky Coils

Rogowsky coils are easy to install and therefore perfect for field measurements.

A wide variety of ranges are available from 3 A to 30.000 A ACrms with accuracies down to 0.1 %. The bandwidth is starting from 10 Hz and is ending at 1 MHz.

Please see the full technical specification for more details.

Rogowsky Coils

DSI Current Shunt Adapters

While some amplifiers offer direct measurements of small range current inputs. Dewesoft offers external shunt adapters for direct current measurement. The DSI adapters are compatible with all Dewesoft data acquisition systems that have DSUB9 input connectors. 

The following DSI shunt current adapters are available:

  • DSI-20mA - 20 mA current input adapter with 50 Ohm internal shunt, 0.05% accuracy for sensors with 4 to 20 mA output.
  • DSI-5A - The new 5A current input adapter. Contains a 10 mΩ shunt resistor with 0.1% accuracy when calibrated. The new DSI-5A adapter has significant improvement is in temperature stability. The new shunt resistor has two times better temperature coefficient (now 15 ppm/K over the range -55 °C to +125 °C, before 30 ppm/K over the range -20 °C to +60 °C).
  • DSIi-10A - isolated current transducer with 10 A FS and < 0.5% accuracy with banana connector inputs.
  • DSIi-20A - isolated current transducer with 20 A FS and < 0.5% accuracy with banana connector inputs.


Please note that isolated voltage input amplifiers are required for connecting shunt resistor adapters.

DSI Current Shunt Adapters
DSI Current Shunt Adapters

Integrated Power Supply

All current sensors that require an additional power supply we offer integrated power supply option - SIRIUS PWR-MCTS2. With this option no external power supply needed.

SIRIUS PWR-MCTS2 is a power supply unit for powering these current transducers directly from Dewesoft instruments without any external power supply. SIRIUS PWR-MCTS2 can be built into SIRIUS compatible chassis or directly into R1DB/R2DB, R4 or R8 data acquisition system.

Integrated Power Supply

E-mobility Power Measurement Device With Integrated DC-CT Current Transducer

The SIRIUS XHS-PWR is a DAQ device designed for in-vehicle direct measurement of current, voltage, and power. It features an integrated patented DC-CT current transducer for very precise current measurements in the most demanding applications such as very high current peaks as well as leakage current measurement.

The current transducer uses special patented DC-CT technology based on the Platiše flux sensor. It represents the latest current sensing technology with ranges 100A, 500A, and 1000A, a wide 1 MHz bandwidth, and ultimate performance. Excellent linearity, precision, accuracy, immunity to external magnetic fields, low offsets, extremely low-temperature drift are achieved at low power operation.

The device can also directly measure the voltage up to 2000V peak (CAT II 1000V) with up to 5 MHz bandwidth.

The device is extremely compact and perfect for direct installation into a vehicle with the power lines leading through the device. It has an IP65 degree of environmental protection which allows the usage in harsh environments and during rough drives.

Learn more

E-mobility Power Measurement Device With Integrated DC-CT Current Transducer

Current Measurement Resources

To learn more about current and voltage measurement you can follow up the following resources:

Current Measurement Resources

Applies to Products

View product SIRIUS

SIRIUS

The world's most versatile, powerful, high-dynamic USB and EtherCAT data acquisition system. Connect any signal and sensor. Packed with the latest DAQ technology. Free DAQ software included.

View product R2DB

R2DB

Compact, mobile, and portable data acquisition systems that feature a built-in data logger, powerful data processing computer, multi-touch display, and internal batteries for maximum portability.

View product R4

R4

Compact data acquisition system with up to 64 analog inputs, 32 counter inputs and 32 analog outputs with built-in high-performance, highly reliable data processing computer and SSD data logger.

View product R8

R8

High channel count data acquisition system with built-in data logger and powerful data processing computer, touch screen display (R8D) and internal batteries (R8B, R8DB) for maximum portability.

View product DSI Adapters

DSI Adapters

DSI adapters are TEDS IEEE 1451.4 equipped sensor adapters that turn any of our DSUB9 universal analog input amplifiers into direct IEPE, charge, thermocouple, shunt, voltage, LVDT or RTD input.

View product Power Analyzer

Power Analyzer

The Dewesoft Power Analyzer is not only the smallest power analyzer in the world, but it’s also the most powerful one. The flexible hardware platform combined with powerful software features gives unique testing possibilities for any kind of electrical measurement.

Dewesoft power analyzers can accurately measure direct high-voltage and current signals but do not stop there. They can also measure vibration, temperature, GPS/GNSS, CAN bus, video, and many other data fully synchronized.

View product Power Quality

Power Quality

The Dewesoft power quality analyzer can measure all the power quality parameters according to IEC 61000-4-30 Class A. In comparison to other power quality meters, ours are able to do more detailed power quality analysis. Raw data storing, behavior at faults, calculation of additional parameters, etc.

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