High-performance portable oscilloscopes for harsh environments. The handy Fluke 190 Series III ScopeMeter test instruments are designed to be used anywhere and for almost any troubleshooting. They combine ruggedness, portability and safety to CAT III 1000 V/CAT IV 600 V with the high performance of benchtop oscilloscopes so you can easily meet the challenges of installing, commissioning and maintaining industrial machinery, automation and process controls and power converter electronics - from DC to 500 MHz. Choose from two- and four-channel models with a wide range of bandwidths. Fast sampling rates up to 5.0 GS/s, resolution up to 200 ps and a large memory for 10,000 sample points per channel enable signal acquisition with high accuracy and detailed display of waveforms, noise and other interference signals. Take time or amplitude measurements on three-phase systems or three-axis controls, or simply compare multiple measurement points in a circuit under test. Features such as TrendPlotT paperless recorder, ScopeRecordT mode, Connect-and-ViewT triggering and a unique replay function with 100 screens help you diagnose problems quickly to minimize repair costs and downtime. Thanks to these features, the oscilloscopes are easy and flexible to use, especially in diagnosing the most difficult problems, such as complex waveforms, induced noise, intermittent events, signal fluctuations or drift.