ATEX & hazardous areas
into control rooms in real time – ensuring those facilities can stay ahead of any potentially dangerous situation.
The data can feed into alarm annunciators or SCADA PC-based monitoring software, which can flag a potentially dangerously high temperature to the control room at a nuclear facility so any potentially abnormal conditions can be acted upon. In many instances the SCADA monitoring system also provides historical logging for post event analysis and reporting.
For example, Omniflex’s Maxiflex IO system has dedicated temperature modules which have been designed specifically for accurate temperature monitoring. Each input is fully isolated and can take data from any type of thermocouple or RTD, they have inbuilt CJC (cold junction compensation) and can generate rate of rise alarm profiles as well as providing four independent trip points. Each trip point can then generate a digital output which can be displayed on an alarm annunciator, or it could be networked via ethernet, CONET, or wirelessly back to the control room to be displayed on a SCADA system. This allows all temperature data to be logged in real time and historically, providing a bigger picture of the environment which can help identify any potential underlying problems. Omniflex’s specialist remote temperature monitoring solutions have been used for reactors, fuel rods and other facilities within the nuclear sector, and are designed for all aspects of temperature monitoring. Its Alarm Annunciator product range has been through the Nuclear SIL process – EMPHASIS – where products are subject to stringent studies and tests as they are assessed through the IEC 61508 Functional Safety Standard. By implementing advanced remote monitoring solutions, you can ensure real-time data tracking and rapid response to critical temperature changes, safeguarding health, safety and operational efficiency.
Omniflex have been manufacturing remote monitoring and alarm annunciator systems since 1965 and all Omniflex products have a lifetime support policy which ensures it will continue to manufacture and support its products regardless of their age for as long as they are still operational and in service.
Omniflex UK
www.omniflex.com ENSURING METROLOGY
COMPLIANCE IN OIL & GAS To aid compliance verification in oil and gas, remote monitoring specialist Omniflex has partnered with calibration experts Kalibra OGC Services to provide the Maxiflex flow computer systems, including pulse integrity modules used for calibrating master metering systems. These systems were integrated into two test rigs designed and manufactured in Durban to be used at various facilities in Angola and Nigeria.
K
alibra OGC Services, accredited to ISO17025:2017 for the calibration of prover loops, designed the system to automate an already approved calibration rig used to calibrate prover loops using the Master Meter Method. Omniflex now offers the Maxiflex 4 Pulse Integrity (4PI) Module and Maxiflex Meter Prover Module which significantly enhances calibration accuracy, repeatability and reliability, ensuring the calibration rig’s equipment sits within acceptable limits and maintains adherence to international quality standards.
The Maxiflex Meter method’s automated system removes potential for human error by ensuring consistent and precise measurements while operating at a high flow rate, reducing the time required to calibrate prover loops, increasing efficiency.
The Meter Prover Module performs pulse interpolation for verifying the master meter according to the Manual of Petroleum Measurement Standards. It accepts four detector switch inputs from a prover loop and receives pulses from a flow meter, performing pulse interpolation calculations in real time. The Maxiflex 4PI monitors can accept inputs from up to four oil and gas turbine flow meters to detect and correct errors, ensuring accurate totalisation and output. The prover loop is calibrated using the master meter method, which is integral to the calibration process, ensuring measurements are precise and reliable.
Instrumentation Monthly February 2025
The calibration process adheres to requirements set out in ISO/IEC 17025:2017, OIML D36 and OIML R117, ensuring the process is rigorous, reliable and meets international standards for accuracy and reliability. “We were impressed with the accuracy of the Maxiflex system during our in-house testing and verification of our portable test rigs,” said Warrick Riley, Kalibra technical director. “The Maxiflex system is suitable to ensure that the measurements recorded using the designed procedures are in accordance with the relevant guidelines and standards. This system also assists in meeting the required uncertainty of measurement (UOM), ensuring precision and reliability.”
“Our equipment can be used with different types of meter prover,” added Ian Loudon, international marketing and sales manager at Omniflex. “Whether that’s volumetric, by using a tank of liquid, or by measuring weight. It depends on the technique the customer wants to use.”
By following these guidelines, Kalibra OGC Services guarantees that all measurements are accurate and compliant with regulatory requirements. Omniflex’s equipment complies with ISO 6551, ensuring accurate measurement of petroleum products during financial and regulatory processes.
Omniflex UK
www.omniflex.com 25
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