Pressure monitoring with alarm trip and event logging
August 2003Pressure Measurement & Control
Surveillance
Integrated Solutions
OmniWatch from Omniflex is a monitoring system that keeps an eye on 16 current loop pressure signals simultaneously. No multiplexing or rotary switches are required. Both two-wire and four-wire pressure transducers may be accommodated. The ability to display 4 to 20 mA signals represented in engineering units on the display is a standard feature.
Each input has an alarm and trip set-point allocated to it, the set-points are configurable via the front panel keypad. Each set-point is represented by an LED indicator, which can be configured with an optional enunciator sequence forcing an operator to silence the audible alarm by acknowledging the alarm condition. An auto or manual reset option can be chosen to trap alarms.
Each pressure channel may be viewed in turn on the front panel LCD display with its set-points by using a scroll button. OmniWatch has an option to automate the display so that the display automatically scrolls through the channels at a specified time interval.
Regarding alarms and set-points; each set-point can have a relay or open collector output for the alarm status, these can be used to drive external devices when the set-points are reached. Protection systems can be implemented in this fashion providing alarm annunciation or shutting down the process.
To save on relay outputs, group alarm functions are used to bring up alarm for the attention of operators. There are four group alarms. One each for all set-point 1's and set-point 2's. And one group alarm each to function as a high-high or low-low common alarm. Every input is mapped to the group alarms. The 4-20 mA inputs can be re-transmitted to another device as isolated 4-20 mA outputs by fitting an analog output module to the OmniWatch.
Every alarm or trip is date and time stamped as it occurs. This is useful for stringent quality control systems where recording of alarm and trips are required. These events are available to the Conet local area network which can then route them to a scada database system.
Networked OmniWatches to SCADA
OmniWatch has a history log, which captures the last 64 trips and alarms with their dates and time stamps. This log can be viewed via the front panel of the device. Operators thus have access to the latest information.
Up to 127 OmniWatch devices may be connected to a single twisted pair cable running the Omniflex local area network - Conet. Conet is supported by most scada packages and can thus acquire the information from OmniWatch devices including all date and time stamped information.
Building upon the 30 plus years of experience in the field of alarm and events monitoring instrumentation for industry, Omniflex continues to provide solutions for many plant applications such as temperature monitoring.
Preserving a French heritage landmark Omniflex Remote Monitoring Specialists
Maintenance, Test & Measurement, Calibration
Omniflex supplied a remotely monitored impressed current cathodic protection system for the Perret Tower in Grenoble, a protected French heritage site, combining 24/7 corrosion protection with integrated surge protection against lightning strikes.
Read more...Lessons in long-distance telemetry Omniflex Remote Monitoring Specialists
Industrial Wireless Data Acquisition & Telemetry
Key engineering lessons from decades of deploying wireless telemetry systems in demanding industrial applications, covering network management, power constraints, physical challenges and the value of open, simplified architectures.
Read more...Integrated layers offer dependable security OPTEX SMART Security Solutions Technews Publishing
Perimeter Security, Alarms & Intruder Detection Integrated Solutions
A layered approach to security tightens protection and minimises downtime and operational risk. Moreover, integrating all the parts of a solution and proving they can do the job before spending money are critical.
Read more...Long-distance signal delivery is critical to rail safety Omniflex Remote Monitoring Specialists
Fieldbus & Industrial Networking
A remote monitoring specialist explains why fibre optic technology is increasingly replacing copper cabling in safety-critical railway signalling systems.
Read more...VEGA pressure instrumentation supports resilient water network management VEGA Controls SA
Pressure Measurement & Control Flow Measurement & Control
As rapid urbanisation and climate pressures strain water networks across Africa, accurate real-time pressure monitoring has become a strategic necessity. VEGA’s pressure instrumentation helps utilities reduce losses, protect infrastructure and meet sustainability targets.
Read more...Omniflex upgrades faulty alarms at cereal manufacturing facility Omniflex Remote Monitoring Specialists
Industrial Wireless
Legacy alarm specialist, Omniflex has delivered a direct retrofit solution for ageing MPAS 90 alarm systems at Kellanova’s Wrexham facility, replacing obsolete units with its SIL-1 rated Omni16R rack-based alarm logic, and Omni-X LED Displays.
Read more...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...Impro announces Primo update
News & Events Access Control & Identity Management Integrated Solutions
Impro Technologies recently held a launch event in which it introduced a series of new products, from new readers through to its updated Primo access management software.
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