Electrical Power & Protection


Surge protected signal isolators

August 2009 Electrical Power & Protection

Omniflex has introduced three innovative new signal isolators, the Omniterm LZ series, with integrated surge protection to cater for applications that require joint isolation and surge protection. Typically high risk areas that are vulnerable to surges need both isolation and surge protection which requires two devices fitted to the field loop – the LZ series combines both functions in a single 22,5 mm wide package.

The OMNITERM LZI and LZD are current loop interface modules designed to interface field mounted transmitters in remote applications such as interfacing for RTUs and PLCs. The LZI is a single channel device with additional flexibility and support for both 2-wire and 4-wire 4–20 mA transmitters. The LZD is a dual channel device for increased packing density suitable for multiple 2-wire transmitters.

The OMNITERM LZB is a dual input field contact interface module designed to protect RTU and PLC installations from external factors such as lightning surges, ground loops and wiring faults. This module includes a fully specified surge arrestor and a high side output driver allowing users to combine all these functions into a single module.

These modules utilise advanced electronic techniques to achieve high accuracy and low power consumption with zero field calibration, saving on installation and commissioning time. Reliability figures in accordance with IEC61508 (SIL1) are available to allow inclusion of these devices in safety systems.

For more information contact Ian Loudon, Omniflex, +27 (0)31 207 7466, [email protected], www.omniflex.com



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Wireless test tools
Comtest Electrical Power & Protection
Fluke has on offer the Fluke 376 FC True-RMS Clamp Meter with iFlex, the most advanced troubleshooting tool for industrial and commercial electricians

Read more...
Energy measurement module for BL20 I/O System
Turck Banner Southern Africa Electrical Power & Protection
Turck’s BL20 energy measurement module enables precise monitoring of the energy consumption of single- or three-phase systems.

Read more...
Digital energy – getting the foundation right
Schneider Electric South Africa Electrical Power & Protection
Digital energy holds immense promise, particularly in Africa where the both the provision and use of energy must be managed to the finest of degrees to meet the demands of its growing, urban population and resultant industries.

Read more...
Novel closed-loop CP technology for corrosion control
Omniflex Remote Monitoring Specialists Industrial Wireless
Cathodic protection specialist, Omniflex has collaborated with researchers at Deakin University to develop corrosion monitoring electronics for a novel closed-loop cathodic protection system for localised corrosion control in challenging industrial environments.

Read more...
The climate change reality in South Africa: An engineer’s call to action
Electrical Power & Protection
This year’s World Engineering Day on 4 March was a powerful reminder of the critical role engineers play in driving progress toward the sustainable development goals.

Read more...
How industrial network design impacts ESG commitments
Omniflex Remote Monitoring Specialists Fieldbus & Industrial Networking
In safety-critical industries like nuclear, petrochemical and oil and gas, installing a new industrial cable network is an extremely complicated task. Gary Bradshaw, a director of industrial network specialist, Omniflex explains why this is often unnecessary as plants are likely to have existing cabling capable of being used to create new industrial networks.

Read more...
Empowering Africa’s renewable energy future
Electrical Power & Protection
As a global leader in renewable energy technology, SUNGROW has pioneered sustainable power solutions for over 28 years. At the recent Africa Energy Indaba 2025, SUNGROW showcased its advanced energy solutions designed to meet the diverse needs of the African continent.

Read more...
The role of electromechanical solutions in supporting Africa’s industrial growth
Electrical Power & Protection
Africa’s industries are transforming rapidly. Fuelled by a huge demand for energy connectivity, better infrastructure, increased manufacturing and responsible resource management, electromechanical solutions are key to shaping this growth, allowing industries to scale up their operations efficiently and sustainably.

Read more...
Empowering South Africa’s IPPs for a renewable future
Electrical Power & Protection
Many crucial parts of the economy of the future will be hugely energy intensive, foremost amongst which will be electrified transport and the large data processing required by automation and AI. Successful economies will be those that can ensure businesses and investors have access to a stable supply of low-cost renewable energy. South Africa has the opportunity to become a global leader in this regard.

Read more...
Sustainable mining operations escalate as demand for critical materials to double
Electrical Power & Protection
The mining sector is at the forefront of the energy transition due to its role in extracting essential materials and minerals necessary for green technologies. As demand for renewable energy, electric vehicles and other sustainable technologies increases exponentially, so will the demand for these necessary materials.

Read more...