November 2001Maintenance, Test & Measurement, Calibration
Instrumentation loop problems are time-consuming affairs for plant maintenance staff to deal with.
Most problems relate to isolation and ground faults, some of which present themselves intermittently or are hidden so deep in the plant wiring that tracing them becomes a full-time job.
Omniflex's new Omniterm range of DIN rail-mount loop isolators use advanced electronic techniques to address the common problems associated with instrumentation loops using several specialised new products:
* LPI loop isolator.
* LPx loop isolator.
* LPR loop repeater.
* LPS loop splitter.
The Omniterm LPI and LPX are current repeaters specifically designed to isolate instrument current loops from circulating ground currents that can cause system inaccuracies, or at worst, instrument failure. The current applied to the input is repeated on the isolated output, and the load present on the output is reflected back to the input. No separate power source is required.
These second-generation products utilise advanced electronic techniques to achieve high accuracy with minimum loop losses and zero field calibration.
The LPI is optimised for lowest volt drop over 4-20 mA, while the LPX is optimised for use with an extended current range from 0-50 mA and load impedances down to zero ohms.
The Omniterm LPR current loop repeater and Omniterm LPS current loop splitter products are specifically designed to create additional current loop signals from an existing current loop signal with minimal effect on the impedance of the existing loop.
The LPR has a single isolated output while the LPS has two isolated outputs.
These 24 V d.c. powered modules accept a 0-20 or 4-20 mA input and create 0-20 or 4-20 mA outputs. The output current loops repeat the input signal and are isolated from the input signal and 24 V d.c. power supply. Impedance changes on the output loops have no effect on the input loop. The module input is fully differential allowing the input to be connected anywhere in the input loop.
No power, no coverage, no problem Omniflex Remote Monitoring Specialists
Industrial Wireless
Remote monitoring expert, Omniflex has delivered a remote monitoring and control solution for an impressed current cathodic protection control system, aiding local authorities in Queensland, Australia in the essential maintenance of roadside culverts.
Read more...Smart ICCP monitoring for safer tank storage Omniflex Remote Monitoring Specialists
Industrial Wireless
Cathodic protection is critical for combatting corrosion in oil and gas infrastructure. Omniflex explores how to manage CP systems in hazardous and hard-to-reach areas.
Read more...When SCADA meets the cloud Omniflex Remote Monitoring Specialists
SCADA/HMI
Engineers are faced with the challenge of unifying legacy SCADA systems with modern, IoT-based data platforms. The trouble is, when hardware from multiple manufacturers and generations are all used in the same system, compatibility becomes an issue
Read more...Safety-critical fibre optic systems in mining Omniflex Remote Monitoring Specialists
Enclosures, Cabling & Connectors
Omniflex highlights the importance of fibre optic technology in in enabling systems in the mining industry to transmit shutdown commands reliably over tens of kilometres and verify that they have been executed.
Read more...The keys to successful nuclear decommissioning Omniflex Remote Monitoring Specialists
Industrial Wireless
Remote monitoring specialist, Omniflex has published its latest sector overview exploring the challenges of maintaining critical alarm visibility and radiation monitoring during nuclear decommissioning.
Read more...Upgrading radiological surveillance systems in nuclear facilities Omniflex Remote Monitoring Specialists
Fieldbus & Industrial Networking
Nuclear plant operators face an uncomfortable reality. Many of the control and monitoring systems still in use today were never designed to support the full operational lifespan of the facilities they serve.
Read more...Wireless radiation monitoring for nuclear defence facilities Omniflex Remote Monitoring Specialists
Industrial Wireless
Gary Bradshaw, director of radiation monitoring specialist Omniflex, discusses why sitewide radiation and alarm monitoring remains one of the most complex challenges in defence environments, and how experience-led system design is critical to maintaining safety and resilience over the long term.
Read more...Keeping lifting equipment safe and securely on track
Maintenance, Test & Measurement, Calibration
In the hustle and bustle of mining production, the focus on the servicing of lifting equipment can unintentionally be sidelined. This situation can easily be avoided with a customised Konecranes Service Agreement that offers a comprehensive and systematic approach to asset management.
Read more...Tablet oscilloscope Vepac Electronics
Maintenance, Test & Measurement, Calibration
The PeakTech 1212 is a new, innovative oscilloscope designed to resemble a standard tablet in size and form. This tablet oscilloscope allows users to record any common measurement quantity and type, just like a desktop oscilloscope.
Read more...Powerful test controller
Maintenance, Test & Measurement, Calibration
XJTAG is launching the XJLink-PF20, brings the same dependability and robustness to a new 4-TAP two-port configuration, and offering both functional and JTAG boundary scan testing with the XJTAG testing suite’s long-established power and control.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version