Pressure measurement
information on mechanical and thermal stresses. In addition to the pressure measurement, additional data is evaluated, including the signal noise or the terminal voltage. The benefits for users are illustrated by three examples:
If a valve was set incorrectly during maintenance, Heartbeat Monitoring detects this as a plugged impulse line. This is made possible by the statistical analysis of the pressure signal.
minimum. For example, software integrity, undervoltage, output current, loop diagnostics and statistical process diagnostics are automatically are continuously monitored. The process and device diagnostic
messages are in accordance with Namur Recommendation NE 107 and provide users with clear instructions on how to react correctly in the event of an error message. Plant uptime is thus significantly increased.
Verification is done in three minutes - eVen remotely
Heartbeat Verification generates further added value for plant operators and maintenance officers. It enables device verification within three minutes. Because there is no active intervention in the signal circuit, even employees without special expertise can perform the verification at any time. An efficient test method, especially for pressure transmitters connected to an analogue input card. Because the new Cerabar and Deltabar
pressure transmitters feature Bluetooth connectivity, users do not have to crawl or climb to the devices. Instead, with Bluetooth, they can conveniently access them directly from a distance of up to 25 meters. The process of the plant continues without interruption. The service technician goes go through the verification step by step via the SmartBlue app from Endress+Hauser on a mobile end device, for example on a tablet or smartphone. Alternatively, verification is possible via digital communication with HART or with the graphic display. Heartbeat Verification takes care of the
documentation of device functions automatically. This is an important service in the chemical, power or oil and gas industries where equipment testing is performed periodically and the outcomes must be recorded. The verification report is issued as a PDF immediately after verification and contains all relevant data.
three examples of how monitoring improVes productiVity
The third pillar of Heartbeat Technology is Heartbeat Monitoring. It detects unwanted device or process anomalies and provides
Instrumentation Monthly January 2022 47
Heartbeat Monitoring determines whether valves are closing too quickly, causing water hammer or pressure surges. This is made possible by measuring dynamic pressure surges in the millisecond range. Mechanical stress can now be quantified.
Heartbeat Monitoring is used to diagnose corroded terminals and the leakage currents they cause. This is possible because deviations in the loop resistance are detected.
The anomalies mentioned lead to incorrect
measurement signals or affect surrounding aggregates. They thus endanger productivity and safety. With Heartbeat Monitoring, plant operators protect themselves from such risks. The monitoring data can be output both as a cyclic or acyclic information.
a look into the future
One of the reasons why the Heartbeat Technology functions are so helpful is that they happen in real time as the analysis runs around the clock and is available at all times. But there is an even higher potential: The data obtained can be used to feed algorithms that enable predictive maintenance. It is now
possible to determine how heavily aggregates in the immediate vicinity of the Cerabar and Deltabar pressure transmitters are stressed and use this for data-based decision making for maintenance or replacement. The example of Heartbeat Technology
shows that the added value of Industry 4.0 can be summed up with the knowledge triangle: Data becomes information, information becomes knowledge, and knowledge is used to optimise maintenance priorities and processes.
Endress+Hauser
www.endress.com
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