The Fluke ScopeMeter 190 Series II handheld portable oscilloscopes are four-channel instruments designed for harsh industrial environments and are safety rated for CAT III 1000 V / CAT IV 600 V 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 like 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 International Protection (IP) -51 dust and drip proof rating so it's tough enough to use safely on the factory floor and in the field.
There are 100 MHz and 200 MHz models with sampling rate up to 2.5 GS/sec and resolution is 400 pico second. The four channels will enable users to 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 synchronization issues.
- Attenuation, fluctuation, drift as a result of impedance issues or environmental impacts.
Fluke says four channels are indispensable for testing variable speed motor drives and inverter power electronic technology used in green energy generation and transportation applications. Users can view and measure harmonics, transients, and loads in three-phase power systems as well as troubleshoot dc to ac converters for faulty insulated-gate bipolar transistors (IGBTs) and control circuits. It is possible to view and measure pulse width modulated waveforms (PWM) for reflections and transients.
Li-ion battery technology enables the Series II ScopeMeter to be used for up to seven hours on a single charge. An external charger and easy-access battery door makes it simple to swap batteries and extend usage.
The scopes have two USB ports, electrically isolated from measurement input circuits, which eases the capture and sharing of waveforms. Users can store data to a USB memory device or connect to a PC via the USB port and transfer waveforms or screen images for data analysis or archive.
Fluke ScopeMeter 190-104 Portable Oscilloscope is $3750 while the 190-204 is $4250.