Test & Measurement


Transducer for large AC and DC currents is highly compact

29 June 2005 Test & Measurement

Lem has introduced a family of current transducers that combines Hall-effect technology and a signal conditioner in a compact case to offer large savings in size (according to Lem, up to 75% compared to other current transducers) for measuring nominal currents up to 1000 A true RMS. These new transducers measure only 90 x 70 x 34 mm.

The DHR series has been designed to measure DC signals as well as distorted current waveforms such as variable frequency drive (VFD) outputs. Additional features include the choice of primary current measuring ranges from 100 A to 1000 A, choice of output options (4-20 mA, 0-5 V or 0-10 V), a wide power supply range (24 to 50 V d.c.) and a large sensing aperture (32 mm) for non-contact measurement.

The new transducers are claimed to provide an absolute accuracy of better than 1% of the nominal current over a broad range of inputs. This, coupled with a wide bandwidth from DC to 6 kHz, an operating range of -40 to +70°C and a true RMS computation for non-linear loads or 'noisy' environments, makes them a very desirable choice for industrial system designers, system integrators and automation distributors looking for accurate and cost-effective AC or DC current transducers.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Handheld RTSA up to 9,5 GHz
Vepac Electronics Test & Measurement
The PXE-90 implements an FFT engine on the built-in FPGA and support frame compression with trace detection while ensuring no missing samples between FFT frames.

Read more...
InterCal introduces a new range of calibrators
Intercal Test & Measurement
Calibration is a critical process in numerous industries, from manufacturing to healthcare, ensuring that instruments and devices provide accurate and reliable measurements.

Read more...
Power Energy Meter for solar projects
Mimic Components Test & Measurement
The Mi550 Power Energy Meter is a handheld three-phase power quality analyser that connects externally with Rogowski coils or voltage-type CTs, allowing for testing without disconnection.

Read more...
MT8870A for NTN NB-IoT testing
Tamashi Technology Investments Test & Measurement
Samsung Electronics has selected the Anritsu Universal Wireless Test Set MT8870A for use on the mass-production lines of the Galaxy S25.

Read more...
XJLink-PF40 JTAG controller
ASIC Design Services Test & Measurement
XJTAG, a specialist in electronic testing, has released its new XJLink-PF40 JTAG controller together with version 4 of its popular PCB software testing suite.

Read more...
INTEGRA Biosciences’ reagent dispenser now supports SiLA-2 integration
Test & Measurement
This new functionality will make it even easier to integrate the WELLJET into automated laboratory workflows, helping labs to enhance their productivity and reproducibility.

Read more...
Advanced portable spectrum analyser
Vepac Electronics Test & Measurement
HAROGIC has introduced the SAE-200, a USB-based real-time spectrum analyser that operates from 9 to 20 GHz with a 100 MHz bandwidth.

Read more...
Water detection sensor
Test & Measurement
Recently, a major global automaker experienced significant issues caused by coolant leaking within the battery system, resulting in short circuit and a subsequent fire that destroyed the vehicle.

Read more...
New atom-based thermometer measures temperature more accurately
Test & Measurement
Beyond precision science, the new thermometer could have wide-ranging applications in challenging environments from spacecraft to advanced manufacturing plants, where sensitive temperature readings are essential.

Read more...
60 MHz 16-bit AWG
Vepac Electronics Test & Measurement
Siglent’s SDG1000X Plus series function/arbitrary waveform generator offers a maximum output frequency of 60 MHz, 16-bit vertical resolution, 1 GSa/s sampling rate, and 8 Mpts arbitrary waveform length.

Read more...