Yokogawa adds real-time power analysis to data-acquisition recorders

Yokogawa adds real-time power analysis to data-acquisition recorders

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By eeNews Europe

In addition to the high-speed multi-channel capabilities plus long memory and isolated input channels already found earlier ScopeCorder models, the new DL850E instruments have the ability to carry out the real-time measurement and analysis of electrical power.

With this move, the vendor meets the demand in many industries, especially automotive and aerospace, where measurements of physical quantities need to be displayed and analysed alongside electrical signals, explained Yokogawa Vice President Terry Marrinan.

All members of the ScopeCorder family are now equipped with a set of basic arithmetic mathematical functions such as addition, subtraction, division, multiplication, fast Fourier transformation and other computations. In addition, the new DL850E versions also offer the /G5 option for real-time measurement of electrical power as well as the existing /G3 option for real-time mathematical computations and digital filtering and the /G2 option for user-defined computations.

With the /G5 electrical power option, trend calculations such as active power, power factor, integrated power and harmonics can be carried out at data update rates up to 100 kS/s using a dedicated digital signal processor (DSP) that is able to calculate and display up to 126 types of electrical power related parameters in real time. This enables the user to display raw waveform signals such as voltages and currents along with calculated power parameters as well as the capability to trigger on any or all of them. Trend waveforms of each order of harmonics and bar-graphs displays can be displayed. Both RMS and power analysis modes are available. In addition to the powerful power calculations, the /G5 option also contains all the functionality of the /G3 real-time mathematics option.

Like existing members of Yokogawa’s ScopeCorder family, the DL850E combines features of a digital oscilloscope and a multi-channel data-acquisition recorder. It can capture and analyse both transient events and trends over time periods from milliseconds up to 200 days, storing acquired data in the acquisition memory, the internal hard disk and/or an external PC hard disk.

Flexible modular inputs enable the DL850E to combine measurements of electrical signals, physical parameters from sensors, and data from CAN/LIN serial buses. A choice of 17 input modules allows the instrument to be configured up to a maximum of 128 channels, giving engineers thorough insights into applications by synchronising the measurement of different types of electrical and physical signals. Individually isolated and shielded input channels provide high resolution and high sample rates, while Yokogawa’s “dual capture” feature allows transient signals to be captured during long-term measurements by recording at two different sampling rates.

The DL850E and DL850EV ScopeCorders are equipped with a large and fast acquisition memory, allowing storage of up to 2 gigapoints of data and providing high sample rates of up to 100 MS/s on multiple channels simultaneously. A history memory function allows users to quickly isolate and examine individual waveform records for detailed analysis.

The ScopeCorder DE850EV Vehicle Edition is designed for engineers working in the automotive and railway industries. A common measurement challenge is to combine measurements of electrical signals, physical performance parameters acquired by sensors, and CAN or LIN bus data transmitted by the powertrain management system. The DL850EV Vehicle Edition addresses this requirement by providing insights into the dynamic behaviour of the electromechanical system. The result is a considerable saving of time saved compared to other approaches such analysis on a PC or the use of other software.

A DC power option allows the DL850EV to be used in a vehicle, with power being supplied by the vehicle’s DC battery. The DC power option allows AC and DC power supplies to be used together to ensure a highly reliable power source. If the AC power goes down, the DL850V instantly switches to a DC input without interrupting the measurement.

For further information about the DL850E and DL850EV ScopeCorders visit:

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