maintenance todaySave timefor a coffee breakOptimized solutions formaintenance and calibrationFewer headaches with your installed baseIssue 5 07/2010 the magazine for all instrument usersMonitoringand measuring energy efficiencyCost-effective calibration solutions2Maintenance Today - Issue 5 - 07/10the magazine for all instrument usersIn this issue:Monitoring and measuring energy efficiency according to the new EN 16001 standardCost-effective calibration solutionsSave time for a coffee breakPlant documentation: your system and W@M Maintenance analysis to stop fire fightingTrends, solutions, shared experiencesEverything you need to get the bestout of your installed base!p. 3p. 4p. 7p. 10p. 11Maintenance publicationsrecently issuedThe Maintenance Guide - new release: this manual is the reference text for your production, metrology and maintenance teams. Its content has been updated and the new issue has been available since 07/2009. Keep a copy on your desk all year round!Maintenance Actions is a handy collection of information sheets dealing with a specific subject of direct relevance to your day-to-day operations. Each sheet offers you options for immediate action. We publish several sheets each year. Recent issues: Easy Access to Spare Parts (11/2009)Memosens Welcome to the digital age! (11/2009)Tailor-made training programs (11/2009)Overcome differential pressure issues (1) (04/10)Find all these documents online at www.products.endress.com/maintenance_publicationsTo receive future issues To subscribe or to receive the electronic version (PDF), please fax us back the coupon below:Company: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Name: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Title: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Department:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Address:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Tel:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E-mail:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Please send me: Electronic version (PDF)Printed versionBothSend us your comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .The Maintenance GuideTips and reference information to keep your installed base up and running2009 UpdatedEC 003H/29/ae/09.09PF/INDD CS2Three complementary tools to help with everyday problems The Maintenance Guide: this fully revised manual is the reference text for your production, metrology and maintenance teams. Keep a copy on your desk all year round. The content is updated every year. Maintenance Today is a magazine for all instrument users and anyone with responsibility for quality issues. Printed once or twice a year, it contains a selection of in-depth articles, case studies and useful information. Provides guidance on handling the challenges and developments you are likely to meet, and on choosing the tools and services best adapted to your needs. Maintenance Actions is a handy collection of information sheets dealing with a specific subject of direct relevance to your day-to-day operations. Each sheet identifies your option(s) for immediate action. We publish several sheets each year.Coming soon: dedicated web pages!To receive the next issues You subscribe already but would like to receive the electronic version (PDF)?A colleague told you about Maintenance Today or Maintenance Actions?Youd like a subscription for a colleague?Register at www.endress.com/urlurlurlurlurl or fax the coupon below to xx xx xx xx xx.Company: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Name, first name:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Function: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Department:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Addresse: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Tel:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E-mail:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Please send me: the electronic version (PDF) of Maintenance Todaythe paper version Maintenance Actionsboth The Maintenance GuideInstruments InternationalEndress+HauserInstruments International AGKaegenstrasse 24153 ReinachSwitzerlandTel. +41 61 715 81 00Fax +41 61 715 25 00http://www.endress.cominfo@ii.endress.comT h e Ma i n t e n a n c e Gu i d eE n d r e s s + Ha u s e rUp to 15% savings through efficient energy monitoring Need to think about the complete solution for you to take control of your energy costs? Our experts are keen to share their expertise and build the appropriate solution combining measuring instrumentation, IT network and software.$3Maintenance Today - Issue 5 - 07/10In an effort to achieve short-term energy-saving opportunities or to minimize its long-term indirect greenhouse gas footprint, your company is implementing the EN 16001 standard. Has your metering capability been adapted accordingly?European Standard, EN 16001 Energy management systems - Requirements with guidance for use was published on 31 July, 2009. This standard specifies the requirements for an energy management system, which requires the development of an energy policy, identification of an organizations past, present, and future energy consumption as well as the development of an energy performance-monitoring plan.Many organizations in the European Union are adopting EN 16001 to meet local regulatory obligations and to improve bottom line energy performance. Concurrently, the American National Standard Institute (ANSI) is leading the effort in the development of ISO 50001, an international standard on energy management largely modeled after ANSI/MSE 2000 and following the established EN 16001 framework. International standard ISO 50001 is expected to be finalized by the end of 2010.With regard to monitoring and measurement, the standard states: The organization shall identify and describe the measuring and monitoring requirements of its energy management programs. On a regular basis, the organization shall measure, monitor and record significant energy consumption and the factors that affect it.These recommendations lead to three essential questions: Has the organization planned what will be measured, where and when it should be measured, and what methods should be used with respect to energy use? Is the energy consumption of most relevant energy consuming processes, machines and/or products being measured, monitored, recorded, analyzed and reported on a regular basis? Are other parameters affecting energy consumption being measured and monitored on a regular basis? To answer these questions Endress+Hauser can help you perform an audit of your existing metering capability and evaluate the additional points for measurement required by the energy management system. In a second step, you will need to adequately maintain and periodically calibrate these measuring and monitoring devices. Here again Endress+Hauser is the ideal partner to help avoid any future drift of the system and thus ensure durable performance.Monitoring and measuring energy efficiency according to the new EN 16001 standardUtilities measurementLong-term actionEnergy counting planFollow-up planAcquisition ofenergy dataData analysisOptimization4Maintenance Today - Issue 5 - 07/10Cost-effectivecalibration solutionsThe performance of a measuring instrument and its ability to work accurately and repeatably within a process environment is crucial and directly linked to the control, safety, quality and yield of a production plant. For this reason the need to periodically check, prove, calibrate and adjust instruments in service is often a critical but specialized activity within a quality controlled organization.One of the most time consuming aspects of an instrument technicians work is to routinely check and calibrate quality critical instrumentation, proving optimum performance and traceability within the production process. In the past such checks were considered to be good practice, and carried out on an ad hoc basis, but today for many industries periodic testing of quality critical instruments has become mandatory. Typical drivers to this situation include the Food and Drug Administration (FDA) who license and audit the operating facilities of the pharmaceutical companies, to ensure that all products are produced to the strictest quality. This activity is also a fundament in ISO 9001 quality accredited manufacturing facilities that process food or produce chemicals.There are two sides to the on-site activity which are prevalent, first is the actual activity of calibration itself. This requires skilled personnel, the right tools and standard operating procedures (SOPs) that everybody follows to ensure consistency of the work.The second activity is the whole management of the activity, scheduling the appropriate time for re-calibration, arranging access to the process plant, allocating the resources, documenting the results, producing compliant calibration certificates and archiving the records.In this new article covering our serial story about metrology and calibration we compare mutual benefits of on-site and laboratory calibration. Lets dive into a world where uncertainty and traceability arekey words.Calibration of a temperature sensorThe calibration traceability chain5Maintenance Today - Issue 5 - 07/101. Major influences on calibration cost include: The number of devices The type of devices The method of calibration The frequency of calibration The tolerance bandwidth for a good calibration result2. Major influences on operational cost are: Quality problems Production stops Regulatory problems(shutdown = cost interruption) Safety, environmental andother hazard related costs Cost for repair of affected equipmentBalancing the two above cost factors yields optimized (best practice) total cost. Other considerations involve where to calibrateand whilst on site is always desirable it might not be practical and hence the meter might need to be removed and sent back to an independent facility for testing and calibration.Off-site CalibrationThese facilities should ideally be traceable and accredited. An accredited calibration rig provides full traceability to national standards. Additionally, comparison measurements against other accredited rigs are often made, to ensure good agreement. Calibration rigs whose measuring uncertainty calculations are based on internationally accepted standards and which have been awarded an accreditation according to ISO 17025 are usually regarded by qualified auditors as fully credible.This can be more demanding than the role of calibration itself. The quality of which is fundamental to ensuring traceability within the process plant for quality control purposes. If you are visited by an FDA or ISO 9000 auditor, it is within the management and control of the scheduling process and retrieval of the records that he will likely focus. In the past this was a mainly manual process and complex paperwork systems were evolved to satisfy the regulatory requirements. A recent trend is that today, software tools, which are fully auditable and compliant to the necessary standards now, exist. These tools simplify the tasks of not just calibrating the instruments but also the process around it. The most desirable methodIn many instances, on-site calibration can be relatively easy to achieve. Portable calibration equipment offers the possibility to usually check in situ the uncertainty of pressure transmitters, temperature systems and level sensors. However, flowmeters are more difficult and the options open to users to prove their device in the application are limited and the necessary tools can be expensive for the average production plant to own and operate. In these instances and also where it makes no sense to employ and train staff the activity of calibration and maintenance of critical instruments is often outsourced. This article focuses on the subject of flow calibration.In situ flow meter calibration is undoubtedly the most desirable method as it is performed with the field device in its operating location, therefore indicating the installed performance of the instrument, which could differ from the original manufacturer specification due to installed effects such as asymmetrical flow profile or swirl caused by upstream bends and fittings.When considering which devices require calibration you also need to take into account the costs involved from two angles.Using portable calibrators to calibrate pressure devices is practical but the measuring accuracy is limited.National levelsNational standardDKD/SCS/SIT/COFRAC/NAMASCalibration laboratoryReference standardInternal calibration laboratoryFactory standardTest equipment for manufacturing processProductTraceability Measuring accuracyOn-site calibration using a mobile flow rig (Coriolis mass flowmeter)The acceptable uncertainty is a key criterion for choosing the right method.6Maintenance Today - Issue 5 - 07/10Method of calibration Typical uncertaintyPrimary ISO 17025 calibration rig 0.05 - 0.2%Traceable calibration rig 0.2 - 0.5%Mobile Master/Slave 0.5 - 1%Ultrasonic clamp-on comparison 2 - 5%Electronic meter verification + sensor inspection 3 - 5%Most rigs use water as the primary test medium and it needs to be assessed if this is representative for the meter under test; other specialized rigs exist for testing meters in hydrocarbons and gas for example but such facilities are not so common and the associated calibration cost can be high. The measuring uncertainty of a calibration rig is usually the best quality indicator to compare calibration laboratories against each other. The facilities with the lowest measuring uncertainty are usually regarded as the rigs with the highest quality potential but the lower the measuring uncertainty the higher the cost of the rigs. On-site CalibrationIf a flow measuring instrument is calibrated right at the point of the actual measurement, all installation related influences are also considered in the result. Unfortunately an on-site calibration is not always easy to accomplish and quite often during the design stage of a production plant the calibration aspects are neglected. When critical measuring points are planned, the installation of fittings, or a bypass downstream of the flow meter should be foreseen. The process fluid can thus be redirected through a master meter, or for a Coriolis mass flowmeter, fed into a vessel and its weight determined by a scale. At the bypass points care should be taken that no leaks occur, particularly during calibration. The scope within which an on-site calibration is possible depends largely on the process fluid and on the flow meters used in that process. Limitations must be expected if the process fluid is corrosive, very expensive, or dangerous, or is under high temperature, or pressure. For meters with sizes above 250 mm, on-site calibration becomes increasingly difficult and is perhaps not economically favorable. Good experiences have been made with mobile calibration skids which are temporarily fixed into a place in the plant, close to the measuring point and on which one or more master flow meters, including all the necessary transmitting and recording equipment is installed. Before such a system is ready for use, a calibration of the mobile master unit, in a traceable calibration laboratory has to be performed and a calibration certificate issued. One additional way to check the functionality of measuring instruments on site could be the use of an electronic test and verification instrument to check most of the important parameters of a measuring point and monitor possible drifts in the measuring instrument also over longer periods of time. By using this method the ideal time of maintenance for the instrument, or the time for recalibration could possibly be established. Another common method to check a flowmeter in situ is by installing non intrusive ultrasonic clamp-on sensors to the outside of a pipe and measure the flow velocity of the liquid in the pipe. The inside diameter of the pipe, as well as the wall thickness must be known and the liquid must be acoustically transparent. These two latter methods are quite practical and useful for simple checks, but the limitations in measuring accuracy must be considered.Obviously the decision regarding the method to be used will influence cost and degree of involvement, which will ideally include a team of responsible site personnel, involving Engineering, Quality and Management who should review such methods and also how often to calibrate. This subject will be explored in the next edition of Maintenance Today.To be continued in the next issueSave time for a coffee breakTechnicians in charge of maintaining differential pressure instruments have reported that they constantly face some common issues. Trapped gas is one of the most frequent issues with these devices. The presence of gas in the impulse lines causes an unstable zero point especially with changing ambient temperature. The reason is that being compressible, the air acts like a spring, which leads to an unstable measurement. Simple to understand but often its not so easy to vent and solve.To simply install a DP instrument is sometimes not as straightforward as you would think... if the impulse lines have been installed by the pipe fitter without consideration of the DP cell orientation then it may well prove impossible to fit the instrument without rerouting the pipes, which can be a nightmare, especially when the lines have already been lagged and heat traced.Do you recognize some of these challenges? Youll be glad to know that these issues (and several others) now definitely belong in the past. At Endress+Hauser, we strive to think of everything to make your life easier.The installation of differential pressure instruments can often be quite challenging for technicians. Consider some of these easy steps when planning a new installation or replacing old instruments and you might actually find you have time to take a coffee break!New range of pressure devices- a real opportunityWhilst working on the design of the new Deltabar M differential pressure device, we put ourselves in your shoes, and considered all challenges you are likely to face... We hope you like the result. Please check out on the following pages to see how you can overcome DP issues easier than ever with Deltabar M.From now on we hope that replacing older generations of DP instruments (whatever the make) is a real opportunity for you to save time and benefit from devices that offer universal connectivity, combined with the latest technology... and Endress+Hausers proverbial instrument reliability. Last but not least, through special selection and ordering tools we guarantee that the device will totally match your application, thus making installation and commissioning easier than ever.The result, we hope, will be a perfect installation with fewer headaches and more time for coffee - what more could you want?7Maintenance Today - Issue 5 - 07/10Our on-site technician reportson how he overcame some of themost frequently reported DP issuessystem and should normally be vented via the side flange drain vents. On older transmitters when operating the venting system, it didnt always appear suitable for every mounting position and was difficult to remove the air. Today with Deltabar M Ive got the right venting system whatever the installation (vertical or horizontal impulse lines). One or two drain vents enable to easily get the air out of the device.Note: this system may also work for getting liquid out of air or gas filled impulse lines.Venting solutionsquickly removing air bubblesAn unstable measurement is usually due to the presence of air bubbles in the pressure entry either to the High or to the Low pressure side. This HP / LP change is also possible via software (display, handheld or HART communication).Easy re-assignment of pressure entriesWhen arriving at the location of the DP instrument I planned to install and commission, I realized that the impulse lines were connected the wrong way: the HP (+) side of the transmitter was connected to the low pressure line and vise versa. In the past I had to disconnect and re-install the impulse lines - this was a nightmare if the lines are already lagged and heat traced.Today with Deltabar M, no mechanicalre-work is necessary. The electronic insert is equipped with a simple DIP switch, which allows easy assignment of the If the tank is already in service, then its necessary to wait until the tank is full to do the wet calibration.Today with Deltabar M if the tank has a linear shape I dont need to wait until its full; I can even do it during the production process. In fact I can do a wet calibration with a tank only partially filled e.g. 20% and 25%. For other tank shapes the tank linearization can be fully performed in the instrument.Cost-effective calibrationOnce the transmitter is installed on a tank then its calibration needs to be checked. 8Maintenance Today - Issue 5 - 07/10A cost-effective solutionWe have been testing the Deltabar M for one year and can state that this DP instrument is exactly what we needed. The Deltabar M fits many applications where the higher accuracy and functionality of the Deltabar S is not required. Furthermore, the technician who replaced the old instrument with the new Deltabar M confirmed this was really easy and quick to do.Rudolf Eichin, Engineering and Production Manager,HeidelbergCement AG (Germany)I need to check the DP transmitter is correctly connected via the 420 mA loop to the PLC or DCS and ensure the loop calibration is correct. Usually I have to check first if the cabling is OK then check if the scaling in the system has been set up correctly.With the Deltabar M, I can access the 420 mA output of the transmitter via test pins, plus the current output of the transmitter can be directly simulated, which allows me to simply verify the cables and their connection as well as the check the PLC or DCS.Quick verification via test pinswith 420 mA simulationup to 30% of the cost of the measuring point compared to the DP transmitter.Note: Endress+Hauser proposes 1 to 1 replacement solutions for each existing pressure transmitter.Optimized cost of the measuring pointIn order to simplify the management of spare parts, weve standardized on the use of DP transmitters also for relative (gauge) pressure and absolute pressure measurement. This has a strong impact on the cost of each measuring point.Today we use Cerabar M for relative (gauge) and absolute pressure and Deltabar M for differential pressure applications. These devices all have the same electronics, display and software; furthermore, with Cerabar M, we can save Endress+Hauser checks the data ensuring that right range and selected product fit together for example. Once validated, the transmitter is produced to order arriving ready to fit to your application.Minimize mistakesWe have many different vendors transmitters installed in our plant. If I need to replace one of these old DP transmitters and Ive found the right Endress+Hauser replacement product, how can I be sure not to forget anything when ordering and get the right pre-configured product?Deltabar M can be ordered pre-calibrated and set-up for pressure, level or flow measurement. If you use the Configuration Data Sheet included in the product Data Sheet then all the necessary information is captured and the processing system of 9Maintenance Today - Issue 5 - 07/10Stefan Besmehn, Head of Electrical Engineeringat Wolfsburger Entwsserungsbetriebe (Germany)10Maintenance Today - Issue 5 - 07/10Plant documentation: your system and W@MPlant documentation with all its components is a time consuming task, especially considering all the legal provisions and specifications. Endress+Hausers W@M portal provides full service support for preparation, production and updates on plant documentation right from the start. How does W@M interact with your existing management system? Electronic plant documentation offers considerable advantages, particularly in process industries with complex plants and their often extensive documentation. Access to up-to-date product information, documentation, spare part lists, order references and the history of realized maintenance work of individual components during the plant life cycle considerably lowers operating costs.The Endress+Hauser W@M portal provides ready access to valuable information during the entire plant life cycle, whereby the fast and simple retrieval of product data and documentation saves valuable time and costs. The life cycle of the individual components is centrally monitored, updated and clearly indicated for all users. Events such as production, commissioning, maintenance and troubleshooting or repair work are contained in the logbook with all details.If a breakdown of the plant occurs, it is quickly and precisely rectified with the automatically generated information and spare parts can be immediately identified and procured all of which reduces down time and associated costs.Automatic transfer of information to existing systemsDo you need to update and manage another database? No! The integrated interfaces provide a connection to existing software tools for engineering, procurement and upkeep. Information and documentation may be automatically exchanged between the existing system and the W@M portal on the basis of web services.This is illustrated by the following example. With the Prodok PLT CAE system of Rsberg Engineering GmbH (Germany), users may select the part of the plant for whichinformation is to be downloaded. They input the type of documentation and the respective language and define a second language in case the documents are not available in the desired one. The system now searches for suitable information and provides lists from which users make a selection and start downloading. The data is not only downloaded but directly integrated into the product. The components are unambiguously identified via a serial or TAG number. All downloaded documents are assigned versions. Users enjoy full transparency of the product life cycle without having to update. The data integration into existing systems of users automates the information availability process and provides maximum benefit.We asked Stefan Besmehn, Head of Electrical Engineering at Wolfsburger Entwsserungsbetriebe (Germany), which of the portal functions he found most helpful in his day-to-day work. His response was: The automatic availability of information on Endress+Hauser instruments in the database. If required, we can easily find the needed documentation. The availability of instruments, spare parts and accessories is immediately recognized. If needed, we can put these straight into the shopping cart of the online shop. This saves precious time.11Maintenance Today - Issue 5 - 07/10Maintenance analysis to stop fire fightingJoop PelsService ConsultantEndress+Hauser NetherlandsTired of constantly having to put out fires? You can avoid these problems with an appropriate analysis of your maintenance activity. Dont worry, it has been tried and tested by numerous clientsConsider the paradox: performing less maintenance than necessary does not generate any savings. This is because any reduction of maintenance costs is more than counter-balanced by higher operation costs due to reduced process availability. Moreover the maintenance department looks like a firemens barracks with people constantly facing emergencies. The other consequences could be a negative impact on product quality or problems in the spare parts supply and the like.On the other hand, excessive maintenance - especially unnecessary actions lead to increased labor costs and probably also the cost for storing unnecessary spare parts.This is where Endress+Hauser can help. Our service consultants perform an audit of the installed instrumentation and give guidelines to turn reactive maintenance to proactive maintenance, thus preventing fire-fighting issues from occurring. They also help find the right balance to avoid excess maintenance.Experience in mid-size and large process plants suggests that equipment and plant availability is improved whilst maintenance efforts are redirected to improve plant productivity. In some instances the result is an increase in preventive activities, in other cases a reduction and redirection of the efforts for more productivity. In most cases, the spare parts stock is consistently reduced.As Service Consultant at Endress+Hauser Netherlands, Joop Pels has conducted a number of maintenance analysis projects in process plants in recent years.Read here to discover some of his tips for easing life in maintenance departments.Joop, what frame of mind are customers in when starting the analysis?People we meet on site are driven by the necessity to improve the production process and to lower the costs. Many of them also face increasingly high regulatory demands aimed at proving the products quality. Everybody would like to optimize the whole system and thus be able to perform maintenance in a balanced way. But in most cases they just do not know where to start! Totally focused on production, they dont have time to identify the instruments that need maintenance and/or calibration. Furthermore, they generally dont have the competence to find out how to optimize and balance maintenance. Hence I can say they are looking for help!What are the most common situationsyou face on site? Customers who already have a maintenance system use it on the application level but not on the instrumentation one. Therefore they often dont know how many instruments are on their processes and cannot be sure they have the right spare parts. This is why we need to make an inventory prior to any analysis of the installed base.11Instruments InternationalEndress+Hauser Instruments International AGKaegenstrasse 24153 ReinachSwitzerlandTel. +41 61 715 81 00Fax +41 61 715 25 00http://www.endress.cominfo@ii.endress.com12.06/I.I.CM 005H/29/ae/07.10PF/INDD CS2How do you proceed to reach the objectives? As projects differ from one to the other, we first find out our customers biggest pain - even though our contacts would spontaneously list many concerns and wishes, we cannot start solving everything at once. By focusing on the biggest pain we can ask the right questions and start building a specific approach.For one such customer we found out that they essentially needed advice on how to optimize maintenance and to identify the right method for the instruments calibration on site. Because of the quality systems, they had to calibrate but didnt know how.Another customer already had a maintenance plan but needed help to improve his SOPs in order to be able to prove quality to the Food and Drug Administration etc.What are the most important outcomes that allow customers to stop fire fighting?With a balanced maintenance plan, an overview of the installed base places focus on critical instrumentation, appropriate SOPs, optimized spare parts stock and a training program; customers who follow the conclusions of our Installed Base Audit are well armed to meet regulatory requirements and face future events. And with such information available 24/7, they definitely have peace of mind at least regarding these topics... Last but not least, in most cases our approach leads to lower costs at the end.The collaborative effort between manufacturer and end-user to carry out maintenance analysis and define a well-balanced maintenance strategy has proven to be an effective approach. The focus on process-critical and difficultto-maintain instruments and the anticipation of failures leads to a visible reduction of downtime while keeping maintenance efforts focused.One outstanding outcome is the reduction of the spare parts stock through standardization and focus on critical instruments. There are numerous other benefits, though: the traceability simplifies budgeting and cost control; and plant reliability is enhanced through better control of maintenance risks.W@M is available either as a web portal or as part of the enterprise local network, thus enabling 24/7 availability of instrument information.During the inventory, instrumentation and process data is easily collected on-site and stored in Endress+Hausers FieldXpert tool. Data is then uploaded into W@M Life Cycle management in order to allow the analysis and the production of a report.Standardization allows consistent spare parts stock reduction. Here is a typical stock of spare parts before (left) and after (right) Endress+Hausers maintenance analysis.