Flowmeters in functional safety applications must ensure maximum reliability. Endress+Hauser’s Proline flowmeters’ Heartbeat Technology provides the most comprehensive range of built-in diagnostics along the entire signal chain, offering unparalleled self-monitoring capability, traceable factory calibration and redundant internal references. Failure rates are minimised for complete flexibility to plan proof-testing and other maintenance according to user needs and to reduce exposure of personnel.
High levels of safety and reliability
In chemical and oil and gas operations, safety is the highest priority. Consequently, flowmeters in functional safety applications must ensure maximum reliability. Although costly, periodic proof-testing of critical measuring points is the established method to verify functional reliability.
With Heartbeat Technology, Proline flowmeters provide plant operators with the basis to minimise effort and exposure for personnel involved in such activities.
Highest functional safety with Heartbeat Technology:
* Proline flowmeters: highest levels of safety and reliability.
* Compliant testing based on traceable references.
* Maximum flexibility in scheduling periodic maintenance.
* Minimal effort and exposure for personnel involved.
* Evidence and clarity regarding the condition of safety-critical measuring points.
Reliability with minimised failure risks
Proline flowmeters have proven their robustness and reliability in countless challenging applications. By stringent deployment of safety-by-design principles, failure risks have been significantly reduced:
* Diagnostic test functionality is embedded in the electronic modules.
* Electronic modules are subject to 100% traceable testing in the factory.
* All Proline flowmeters are calibrated using accredited facilities.
Functional safety standards such as IEC 61508 emphasise Probability of Failure on Demand (PFD) as the basis to schedule periodic proof-testing. Thanks to minimised PFD progression provided by Heartbeat diagnostics, Proline users enjoy the highest flexibility to plan their maintenance around bottlenecks other than their flowmeters: users can schedule proof-testing based on operational needs and not the other way round.
Compliance with easy electronic reporting
Triggered either on-site or remotely, Heartbeat verification adds to the effectiveness of proof-testing without process interruption. It executes a complete run of diagnostic tests and stores the results in a secure digital flash memory inside the device. The last eight data sets are stored and can be collected via an asset management tool to generate compliant electronic documents. With total test coverage in the order of 95%, Heartbeat Technology ensures the flowmeter always works within its specified accuracy.
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