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Portable electronic test and measurement specialist Fluke has launched the Scopemeter 190 series II handheld portable four-channel oscilloscopes designed for harsh industrial environments.

The portable scopes are safety rated for CAT III 1,000V/CAT IV 600W environments.

The four input channels are fully isolated from each other to perform differential floating measurements, a critical consideration for troubleshooting fixed-installation three-phase power electronic devices such as variable-speed motor drives.

The Fluke Scopemeter chassis is sealed from the environment with no cooling slots or fans to expose the instrument.

It carries the IP51 dust- and drip-proof rating, making it tough enough to use safely on the factory floor and in the field.

The Fluke 190 series II is said to meet the growing need for four-channel portable oscilloscopes in industrial environments.

Power electronics are used increasingly in solar and wind energy generation and to maximise efficiency or reduce power consumption especially in heavy duty electromechanical applications.

With the Fluke 190 series II Scopemeter, users can see more and fix more using all four channels.

Their fast sampling rate – up to 2.5GS/sec and 400 picosecond resolution – helps users capture electrical noise and other disturbances to diagnose exactly what is going on.

With 100MHz and 200MHz models, they deliver the bandwidth needed to allow companies to future-proof their processes.

With four channels, users can inspect input signals, output signals, feedback loops, or safety interlocks simultaneously to solve problems such as: signal amplitude or shape variations, induced noise or disturbances across critical circuit nodes; signal timing measurements and synchronisation issues; attenuation, fluctuation, drift as a result of impedance issues or environmental impacts.

Four channels are key in testing variable-speed motor drives and inverter power electronic technology used in green energy generation and transportation applications.

Users are able to: view and measure harmonics, transients, and loads in three-phase power systems; troubleshoot DC to AC converters for faulty insulated-gate bipolar transistors (IGBTs) and control circuits; view and measure pulse width modulated waveforms (PWM) for reflections and transients.

Fluke said the test tools are convenient and user-friendly, and high-performance Li-ion battery technology keeps the series II Scopemeter on the job for up to seven hours.

An external charger and easy access battery door makes it simple to swap batteries and extend usage.

Two USB ports, electrically isolated from measurement input circuits, make it easy to capture and share waveforms.

Users can store data on a USB memory device or connect to a PC via the USB port and transfer waveforms or screen images for data analysis or archive.

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