High-performance portable oscilloscopes designed for demanding environments
Designed to go anywhere, Fluke 190 Series III ScopeMeter® test tools are suitable for virtually any kind of on-the-go troubleshooting. These CAT III 1000 V/CAT IV 600 V test tools combine rugged portability with the high performance of table oscilloscopes to help you meet the challenges of installing, commissioning and maintaining industrial machinery, automation, process control and power electronics - from DC to 500 MHz - with ease.
Choose from two- or four-channel models and a range of bandwidths. High sampling rates of up to 5.0 GS/s, a resolution of 200 ps and deep memory with 10,000 samples per channel ensure that waveform details, noise and other disturbances are recorded and displayed with extreme accuracy. You can perform timing or amplitude measurements on three-phase or three-axis control systems, or simply compare and contrast multiple measurement points in a circuit under test. Features such as TrendPlot™ paperless recorder, ScopeRecord™ mode, Connect-and-View™ trigger function and a unique 100-screen Replay function help you diagnose problems quickly to minimise repair costs and downtime. Thanks to these features, the oscilloscopes are easy to use. Especially for analysing the most difficult problems, such as complex waveforms, induced noise, intermittent events and signal fluctuations or drift.
- Up to four independently floating isolated inputs, up to 1000 V
- Up to 5 GS/s real-time sampling (depending on model and channels used)
- Deep memory: 10,000 points per scope line of the recorded waveform (Scope mode)
- Safety specification CAT III 1000 V/CAT IV 600 V for industrial environments
- Up to seven hours of battery operation with BP291
- The large, bright colour screen is easily visible in almost any environment
- Easy to store and display historical data and transfer to a PC via USB or WiFi
- Easily accessible battery cover for quick on-site battery changes
- Protection class IP51, dust- and drip-proof
- Intelligent and automatic Connect-and-View trigger function for fast, slow and even complex signals
- Frequency spectrum by FFT analysis
- Automatic recording and reproduction of 100 screens
- ScopeRecord mode provides 30,000 measurement points per input channel, for analysing low-frequency signals
- TrendPlot paperless recorder with deep memory for automatic long-term measurements
- DMM with a resolution of 5,000 counts in the 2-channel models

Safe measurement from mV to kV
Independently isolated inputs allow you to make measurements in mixed circuits with different earth references, reducing the risk of unwanted earth faults. Conventional tabletop oscilloscopes without dedicated differential probes and isolation transformers can only make measurements relative to mains supply earth. ScopeMeter 190 Series III test instruments are made to cover a wide application range from mV to kV. So you are equipped for everything between microelectronics and heavy-duty high-voltage electrical applications. Configurations of the 190 Series III, 60 MHz and 100 MHz include VPS421 100:1 probes for higher voltage applications, while the 200 MHz and 500 MHz configurations include VPS410-II 10:1 probes suitable for both microelectronics and higher voltage applications.
Protection class IP-51 for use in harsh environments
ScopeMeter portable test instruments are rugged, shockproof and designed for dirty, hazardous environments. Thanks to its sealed housing, the instrument is resistant to dust, dripping water, humid environments and airborne contaminants. You can rest assured that the ScopeMeter test instrument is always reliable, will do its job wherever you are.
USB and WiFi connectivity
The Fluke 190 Series III has two USB ports, electrically isolated from meetingang circuits, so you can quickly and easily transfer data to a PC, archive waveforms and share them with OEMs, colleagues and support staff. Or save waveforms, screenshots and instrument settings to USB memory devices for later use. Easily transfer stored files via a USB stick, direct connection via the USB connector or optional WiFi connectivity. These files can be used for further data processing or in FlukeView-2 software to study waveforms in more detail.
Connect-and-View-triggering
Connect-and-View triggering provides an instant, stable display without having to adjust settings. If you have used other oscilloscopes before, you know how tricky triggering can be. If the settings are incorrect, the results may be unstable or incorrect. Connect-and-View automatically ensures correct triggering by recognising signal patterns. Without even having to press any buttons, you get a stable and reproducible display of almost any signal, including motor drive and control signals. This feature is especially quick and convenient when you want to test multiple measurement points in quick succession.


Built-in digital multimeter
Conveniently switch from waveform analysis to accurate multimeter measurements with the built-in 5000-count digital multimeter on two-channel 190 Series III models. Measurement functions include V DC, V AC, V AC+DC and resistance measurement as well as dial-through and diode test. Measurement of current and temperature using a suitable shunt, probe or adapter with a wide range of scale factors.
ScopeRecord™ mode for recording high-resolution waveforms
The ScopeRecord™ memory stores up to 30,000 or more data points per channel and records fast intermittent events or glitches with a duration of only 8 ns. (Two sets of multi-channel recordings can be stored on the internal memory for later analysis).
- Stores certain events, such as start-up cycles of UPS systems, mains supplies or motors
- In Stop-on-Trigger mode, the ScopeMeter test instrument automatically recognises a power failure and stores the data of the preceding waveform


TrendPlot paperless recorder: records for up to 11 days, allowing you to detect intermittent faults
The hardest to find faults are the ones that occur only occasionally. These intermittent events can be caused by poor connections, dust, dirt and corrosion, as well as a wire or connector break. Mains power failures, fluctuations and interruptions, or starting or stopping a motor can also be to blame for a machine stopping. You may not be around when it happens, but your Fluke 190 Series II ScopeMeter measuring instruments will definitely not miss this event.
- Minimum and maximum peak and mean values over time
- Recording of any combination of up to four readouts including voltage, current, resistance, frequency, temperature and phase for all inputs, including time and date indication to track faults
FlukeView™ 2 ScopeMeter software for documentation, archiving and analysis
Get more out of your ScopeMeter test instrument with FlukeView 2 ScopeMeter software for Windows.
- Documentation: transfer waveforms, screenshots and data to your PC for printing or importing into a report
- Add text to ScopeMeter test instrument settings: support technicians in retrieving settings
- Archive: create a library of waveforms for easy reference or comparison of waveforms
- Analysis: use cursors or export data to another analysis programme


