High-accuracy Current Sensors and Transducers

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

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 XHSR2DB, 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.

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 20 mA, 5 A, isolated 10 A and isolated 20 A shunts with accuracy down to 0.1% for direct AC or DC current measurements. See DSI adapters product page for shunt adapter details. 

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 about the new DC-CT current transducer technology and how it works.

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

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