Chip scale transformers provide analogue isolation
June 2007
Data Acquisition & Telemetry
New, high speed digital isolation components are making a significant impact on lowering cost and increasing performance of industrial analogue data acquisition devices. Isolation is a critical part of any industrial data acquisition system and is used to physically separate parts of a circuit for safety, preventing ground loops and rejecting common-mode voltages. Isolation can be implemented either before or after the analogue signal has been digitised.
Traditionally, analogue isolation components such as isolation amplifiers have been used at the analogue front end of data acquisition systems. More recently, an increasing number of data acquisition manufacturers have moved away from analogue isolation to digital isolation which occurs after the signal has been digitised. Digital isolation allows for more flexibility on the analogue front end and overall increases in performance with higher signal bandwidth, higher input impedance and lower cost.
Optocouplers have been a common means of digital isolation. However, adding optocouplers to an analogue data acquisition device significantly reduces data rates, raises power consumption, and increases printed circuit board size. Newer digital isolation technologies, such as iCoupler from Analog Devices, make use of chip scale transformers to offer several channels of isolation in a small form factor. These components are lower cost than optocoupler circuits, employ high speed CMOS (complementary metal oxide semiconductor) technology for increased data rates, are smaller in size compared to optocoupler circuits and significantly reduce power consumption.
New industrial analogue data acquisition devices from National Instruments, such as the C Series modules, are leveraging these high speed digital isolation components to achieve optimal analogue performance. C Series modules are used in the reconfigurable CompactRIO programmable automation controller (PAC) and high performance USB devices. For industrial users this implies faster and higher performance industrial analogue I/O products at a much lower cost.
For more information contact National Instruments South Africa, 0800 203 199, +27 (0)11 805 8197, [email protected], www.ni.com/southafrica
Further reading:
The industrial era of wireless telemetry and radio communication
Schneider Electric South Africa
Data Acquisition & Telemetry
Today’s advanced wireless telemetry offers a range of benefits that go beyond cost savings, including greater flexibility and mobility, remote monitoring capabilities, and enhanced safety.
Read more...
Connecting every transport node
RJ Connect
Editor's Choice Data Acquisition & Telemetry
Stockholm's bus system strategically links urban mainline, suburban mainline, non-mainline routes, community service buses and night buses. To acquire and process data from multiple sources and analyse onboard information on their moving buses, Transdev sought a dependable and powerful onboard computer. It teamed up with CatAB, Moxa’s local representative, known for delivering top-notch industrial data communication boards and equipment since 1988.
Read more...
Paratus South Africa boosts Tantum IT’s connectivity with Eutelsat
Data Acquisition & Telemetry
Tantum IT is a leading IT service provider specialising in remote IT management, cloud services, and secure data handling for industries in remote and high-demand environments. To overcome its connectivity challenges, Tantum IT chose Paratus, an official distributer of Eutelsat OneWeb’s Low Earth Orbit services, to provide the solution.
Read more...
Wireless communication system for remote access to data
KROHNE
Data Acquisition & Telemetry
KROHNE has introduced the OPTIBRIDGE 3880 IIoT data logger for remote data services, acquisition and evaluation. It is a fully autonomous battery- or mains- powered wireless communication system for remote access to measurement data.
Read more...
New industrial tablet series for non-ex applications
Pepperl+Fuchs
Data Acquisition & Telemetry
Pepperl+Fuchs is introducing a rugged tablet series in accordance with
MIL-STD-810H. The slim Windows-based devices are available with a 20 or 25 cm display, offering numerous customisation options and an extensive range of accessories.
Read more...
New wireless communication system for remote access to measurement data
KROHNE
Data Acquisition & Telemetry
KROHNE has introduced the OPTIBRIDGE 3880 IIoT data logger for remote data services, acquisition and evaluation. This is a fully autonomous, battery- or mains-powered wireless communication system for remote access to measurement data, aimed at the water and wastewater industry.
Read more...
Programmable LED indicators
Turck Banner Southern Africa
Industrial Wireless Data Acquisition & Telemetry
Turck Banner is expanding its portfolio of LED lights with the robust LED indicators of the K100 series. These units improve workflow and reduce downtime through clearly communicated status information.
Read more...
Decoding the world of direct part marks
Omron Electronics
Data Acquisition & Telemetry
OMRON has unveiled its latest breakthrough, the V450-H ultra-rugged handheld scanner. Tailored specifically for industrial DPM reading, this innovative device sets new industry standards for durability and performance.
Read more...
Green manufacturing energy conservation and emission reduction
Dahua Technology South Africa
Data Acquisition & Telemetry
As a world-leading video-centric AIoT solution and service provider, Dahua is committed to improve its sustainable development capabilities and to make continuous efforts in building a greener and safer digital world by developing innovative solutions that can help conserve energy and reduce carbon emission.
Read more...
Adding value in a Heartbeat
Endress+Hauser South Africa
Data Acquisition & Telemetry
This Endress+Hauser technology provides enhanced measuring reliability and safety, higher efficiency in operation, productivity gains and compliance, and fewer unplanned shutdowns.
Read more...
printer friendly version