Smoke Density Monitor application documentation
Contents
1. Scandinavian Boiler Service Inc Version 1 04 Smoke Density Monitor application documentation Navigating the User interface fa Client Builder fa Client Builder Description Graphical Monitor SBS Appl 4 2 Scandinay for mo Designed Graphical Monitor Engine 1 Graphical Monitor Engine 2 fal Client Builder Data Browser Create Report fal Client Builder Graphical Monitor Screencumps Date and time is GMT 05 00 Eastern Time US amp Canada SOM Numbers SDM1 Engine SDM2 Enginez SOM Engines SDM4 Engine SDMS Engines SDM6 Engines SDM7 Incinerator1 SDMS Incinerator2 SDMS Boiler1 SDM10 Boiler2 SBS Note Right click on the database 4 Graphical Monitor Trending Graph Single Trending SDM Single Historic Tasks Help Alarm Viewer Alarm History Acknowledge view SDM Groups Real Time 100 O spmM6 Value 8 Choose SDM SOM Numbers SDM1 Engine SDM2 Enginez SOM Engines SDM4 Engine SDMS Engines SOM Engines SDM7 Incinerator1 50 SDM Values o SDMS Incinerator2 SDMS Boiler1 SDM10 Boiler2 Connected TimeZone Note Right click and choose Offlin SBS Group Browser Group Mame 000 All Groups 10 WARNING 0002. 0004 12 17 27 Yes Eastern Standard Connected Alarm Message Note Date and time is GMT 05 00 Eastern Time US amp Canada SBS from Engine 1 is high reading is Alarm Banner On Status Initial Time Normal Line Normal Time Eile Edit View Insert Format Database Report Analyzer incl Da amp AF Design Preview amp ae SDMreport2 rpt PH 9EB90C9C CVC CVT CVV 0000000000 ES aah E For Help press F1 fa Client Builder 4 Go A Smoke Density Re Datetime 2001 05 08 12 15 30 00 2001 05108 12 15 15 00 200 105108 12 15 00 00 2001 05108 12 14 45 00 2001 05108 12 14 30 00 2001 05 08 12 14 15 00 2001 05108 12 14 00 00 2001 05108 12 13 45 00 2001 05108 12 13 30 00 2001 05108 12 13 15 00 2001 05 08 12 13 00 00 2001 05 08 12 12 45 00 2001 05 03 12 12 30 00 2001 05 08 12 12 15 00 2001 05103 12 12 00 00 200 1 0503 12 11 45 00 2001 05 08 12 11 30 00 2001 05108 12 11 15 00 2001 05 08 12 11 00 00 2001 05 08 12 10 45 00 2001 05108 12 10 30 00 2001 05108 11 46 15 00 2001 05 08 11 46 00 00 200 1 05 08 11 45 45 00 2001 05108 11 45 30 00 2001 05108 11 45 15 00 a wo l 2 2l L Trending Grap SDM Single Historic SDM Groups Real Time Engines Incinerators Boilers fal Client Builder Graphical MI h Group
3. SDMS Incinerator za F Browsing SMOKEMOSITOR SDMmonitor Connected FLDataServer DataServer Local Note Right click on the database and choose Refresh for an updated view epee Seer as 7 T SBS Data Browser This is a view into the data logged into the database the 1000 most current reading from the top Every 15 second the readings are logged and stored into the database for 700 days Possible user interactions are database browsing and report creation The database view can be refreshed by right clicking Time Zone Map described on page 2 can be viewed by clicking the GMT notification Further information about creating reports please refer to the separate How To help file Inserted into this document below Jeppe K Moller Page 3 of 13 4 26 2003 Scandinavian Boiler Service Inc Scandinavian Boiler Service Inc Version 1 04 Creating the SDM Report Press the Create Report button from within the Data Browser Page This will launch the Crystal Reporting software i SDMreport rpt Print the report to a window right naw Hr Min Time RA EAJ am PM Month Day Year Date I Ei ei The report will be printed to a window Wiridow Styles m Print Refresh Data Done About i Modify selection formula Zz This window lets you specify your Report format most of the time you will not have to do anything but hitting the PRINT button to put the report t
4. in this application has been divided into 2 categories How big a time frame one wants to evaluate decides which of the 2 categories one should choose SDM Single Generates a single graph out of the data logged into database on disk which is why this one is referred to as Historic trending For as long time the application has been logging data one would be able to generate a graph on each single monitor with data 15 seconds from each other SDM Groups Generates multiple graphs out of the real time data acquired directly from the computers memory which is why this one is referred to as Real Time trending From 1 hour as of the application has been started and real time trending has been activated one would be able to generate a graph on each group category with data 1 second from each other History in real time trending has been limited to 1 hour because historic data is written to memory RAM and not to disk Depending on how much RAM this system has got this could be adjusted from minutes to days or even weeks Jeppe K Moller Page 8 of 13 4 26 2003 Scandinavian Boiler Service Inc Scandinavian Boiler Service Inc Version 1 04 Trending Graph Single Trending Help Trending Graph for Engine 1 Value 25 Real Time Trend aaa Ra a aaa ea ae jee nee a7 Engines A ee TEE ee EO A E E EE ET Boilers i i i i Incinerators SS SS SS eS eee eS ee SS a aaa a SS eS Se i ee ee aaa a a aaa aa aa SS eS SS a ee SDM Number
5. is 100 SOME B WARNING Smoke density from Incinerator 2 is high reading is 100 SOM T WARNING Smoke density from Boiler 1 i high reading is 100 SoMa a WARNING Smoke density from Boiler 2 is high reading is 100 SOM 04 09 2003 11 10 11 04 09 2003 11 10 11 04 09 2003 11 10 11 04 09 2003 11 10 11 04 09 2003 11 10 11 04 09 2003 11 10 11 04 09 2003 11 10 11 04 09 2003 11 10 11 g WARNING Smoke density from Engine 1 i high 10 WARNING Smoke density from Engine 1 is high TI WARNING Smoke density from Engine 1 is high TA WARNING Smoke density from Engine 1 is high Ta WARNING Smoke density from Engine 1 is high 14 WARNING Smoke density from Engine 1 is high 15 SYSTEM 16 SYSTEM 17 SYSTEM 18 SYSTEM 13 SYSTEM 20 SYSTEM Connection to the PLC has been lost Connection to the PLC has been lost Connection to the PLC has been lost Connection to the PLC has been lost Connection to the PLC has been lost Connection to the PLE has been lost reading i 77 reading is fr reading is 58 reading is 77 reading is 73 reading is Fr check cabling and r check cabling and r check cabling and r check cabling and r check cabling and r check cabling and r SOM SOH SOH SEHI SoM SEHI 27 WARNING Smoke density from Engine 3 is high reading is 54 22 WARNING Smoke density from Engine 1 is high reading i 50 MBUSTOCP_ MBUSTCP_ MBUSTCP_ MBUSTCP_ MBUSTCP_ MBUSTCP_ 04 09 2
6. 00 20010507221524 23 WARNING Smoke density from Engine 2 is high reading is 40 SDM2 WARNING 2 2001 0507204140000 20010507210228 20010507204142 24 WARNING Smoke density from Engine 1 is high reading is 100 SDM1 WARNING 1 20010507195639 000 20010507195712 20010507195640 25 WARNING Smoke density from Engine 4 is high reading is 99 SDM4 WARNING 16 20010507194923 000 20010507195210 20010507194939 26 WARNING Smoke density from Engine 4 is high reading is 71 SDM4 WARNING 1 20010507194921 000 20010507195210 20010507194922 27 WARNING Smoke density from Boiler 2 is high reading is 90 SDM10 WARNING a 20010507175737 000 20010507175914 28 WARNING Smoke density from Engine 1 is high reading is 100 SDM1 WARNING 1 20010507163941 000 20010507164559 20010507163942 29 WARNING Smoke density from Boiler 2 is high reading is 30 SDM10 WARNING 0 20010507161907 000 20010507162605 Note All time values are defined in seconds and most recent alarms are listed from the top SBS SBS Fig 1 Screen shot of the application layout Description Graphical Monitor Fig 2 Diagram of the application layout Jeppe K Moller Scandinavian Boiler Service Inc Engine Group Page 1 of 13 Trending Graph Incinerator Group Alarm View Boiler Group 4 26 2003 Alarm History Scandinavian Boiler Service Inc Version 1 04 Description Help l Application developed by Scandina
7. 003 11 13 56 04 09 2003 11 15 36 04 09 2003 11 15 37 04 09 2003 11 15 39 04 09 2003 11 15 41 04 09 2003 11 16 17 04 17 2003 14 04 45 04 12 2003 15 57 46 04 12 2003 13 25 31 04 12 2003 15 51 20 04 12 2003 23 50 33 04 13 2003 14 50 33 04 73 2003 15 24 45 04 13 2003 15 24 56 04 09 2003 11 13 56 04 09 2003 17 15 36 04 09 2003 11 15 38 04 09 2003 11 15 40 04 09 2003 11 15 42 04 09 2003 11 16 17 04 73 2003 15 25 29 04 13 2003 15 25 07 Co co oOo oO oOo oOo oOo H H H Oo Oo oO lo lo aA a lee lo BS Pa Browsing 4LARMSas5D0Mmonitor Connected FLDataServer DataServer Local Mote All time values are defined in seconds and most recent alarms are listed from the top SBS Current Position M uf Alarm Viewer History The Alarm History page is a look into the alarm database so one is able to see what alarms has been acknowledged in the past Initial time is when the alarm was triggered and Normal time is when the reading went back to un warning condition below 50 finally the Duration telling you how many seconds the reading was above 50 Jeppe K Moller Scandinavian Boiler Service Inc Page 13 of 13 4 26 2003
8. 4 Graphical Monitor Help Engine 1 Engine 2 Engine 3 Engine 4 Auxiliary 1 Auxiliary Auxiliary 3 Boiler 1 Boiler 2 Incinerator 40 40 30 30 20 20 10 10 Hh engines Auxiliaries a Boilers S Incinerator Mok 20 50 Critical 50 100 Warning Current Position M wf SBS Graphical Monitor An overview of the current amount of smoke produced gathering all Smoke Density Monitors SDM in the same screen The bar graphs has been grouped into 3 categories reflecting each system they monitor Depending on the SDM readings the bar graphs will change its colors from green OK to yellow Critical and finally red Warning The settings for each category can be changed but the default limit settings are as follows 0 20 OK 20 50 Critical 50 100 Warning Each time a Warning is triggered time duration and values will be logged in the Alarm screen No user interaction possible in this screen Each time a Warning is triggered time duration and values will be logged in the Alarm screen No user interaction possible in this screen Jeppe K Moller Page 7 of 13 4 26 2003 Scandinavian Boiler Service Inc Scandinavian Boiler Service Inc Version 1 04 Trending Graphs in general These graphs can be used to compare SDM values through out a certain time frame In this way one would be able to tell the tendencies of the amount of smoke produced is it increasing or decreasing Trending
9. Tre pea Note Display Buff Graphical Monitor Trending Graphs Alarms Alarm History Taska Help Message Monitor number Group Duration Initial Time Ack Time Normal Time 1 2 WARNING Smoke density from Boiler 2 is high reading is 91 SDM10 WARNING 0 20010508121030 000 200105086121048 3 WARNING Smoke density from Engine 4 is high reading is 41 SDM4 WARNING 1 20010508112321 000 20010506114330 20010508112322 4 WARNING Smoke density from Engine 4 is high reading is 40 SDM4 WARNING i 20010508112316 000 20010506114330 20010508112317 5 WARMING Smoke density from Boiler 1 is high reading is 99 SDM WARNING 51 20010508102153 000 20010506103729 20010508102244 6 WARNING Smoke density from Engine 4 is high reading is 43 SDM4 WARNING 4 20010508060144 000 20010506101338 20010508060148 7 WARNING Smoke density from Engine 4 is high reading is 86 SDM4 WARNING g 20010508060133 000 20010506101338 20010508060142 8 WARNING Smoke density from Engine 1 is high reading is 59 SDM1 WARNING 1 20010508050822 000 20010506101338 20010508050823 g WARNING Smoke density from Engine 6 is high reading is 46 SDME WARNING 8 20010508045909 000 20010506101338 20010508045917 10 WARNING Smoke density from Engine 6 is high reading is 50 SDME WARNING 8 20010508045659 000 20010506101338 20010508045907 11 WARNING Smoke density from Eng
10. are from earlier installations and may not reflect exactly this ship s SDM configuration but described functionality will still be the same and can be used accordingly Jeppe K Moller Page 2 of 13 4 26 2003 Scandinavian Boiler Service Inc Scandinavian Boiler Service Inc Version 1 04 Data Browser Help Datetime SDM1 SDM2 SDM3 SDM4 SDM5 SDM6 SDM SDHE SDHI spl 61 4 12 2003 4 25 30 PM 0 0 0 45 0 0 0 0 0 862 4 12 2003 4 29 15 PM M 0 0 45 0 0 0 0 0 B63 4 12 2003 4 25 00 PM 0 0 45 0 0 0 0 0 B64 4 12 2003 4 28 45 PM 0 0 45 0 0 0 0 0 S65 4 12 2003 4 28 20 PM M 0 0 45 0 0 0 0 0 Rae B A B66 4 12 2003 4 28 15 P 0 0 45 0 0 0 0 0 Meantime Dublin B67 4 12 2003 4 28 00 PM 0 0 45 0 0 0 0 0 London click for Time eee 4 12 2003 4 27 45 PM M 0 0 45 0 0 0 0 0 pee 869 471272003 4 27 30 PM 0 0 45 0 0 0 0 0 avo 4 12 2003 4 27 15 PM 0 0 45 0 0 0 0 0 SDM Numbers afl 4 122003 4 27 00 PM 0 0 45 0 0 0 0 0 SDM1 Enginet B72 4 12 2003 4 26 45 PM 0 0 45 0 0 0 0 0 SDM2 Engine ava 4 12 2003 4 26 30 PM 0 0 45 0 0 0 0 0 SDM Engine ava 4 12 2003 4 26 15 PM D 0 0 45 0 0 0 0 0 SDM4 Engined 875 471272003 4 26 00 PM 0 0 45 0 0 0 0 0 SST Cec ea ave 4 12 2003 4 25 45 PM 0 0 45 0 0 0 0 0 ane a77 4 12 2003 4 25 30 PM M 0 0 45 0 0 0 0 0 ee fae are 4 12 2003 4 25 15 PM 0 0 45 0 0 0 0 IES l ara 4 12 2003 4 25 00 PM 0 0 45 0 0 0 0 0 Se aes apo 4 12 2003 4 24 45 PM 0 0 45 0 0 0 0 0 SO yen set 4 12 2003 4 24 30 PM P 0 0 45 0 0 0 0 D
11. ig report which takes a long time to process and print Jeppe K Moller Page 5 of 13 4 26 2003 Scandinavian Boiler Service Inc Scandinavian Boiler Service Inc Version 1 04 Enter Parameter Values Parameter Fields EndD ate Select how far back you want the Report to start Discrete Value 373172003 300 PhS al March 2003 gt 1 2 2 4 a bo foe 3 WW Wd vw i 14 415 IB eee I ele ieee 23 4 25 256 2 20 29 30 a 373172003 Cancel The Parameter window lets you specify from what date and time you want the report to Start and when the report should End Remember to highlight and specify both the StartDate and EndDate parameters Hit OK Sele x ld 4 SBF hla 5 gt J Tota 2398 100 2398 of 2398 Preview SOMreport rpt oo B24 2003 3252003 lt We 2008 Amoke Density Reporti M S Legend of the Seas OF 2003 Dinar ins Glew ENGL EWG ENGI ENGA ENGE INCL Le BOI OIZ 292003 3430 2003 331 2003 B The report will be created in this example 45 pages were created You can go through the pages either by clicking P or click the date on the left drill down panel From here you can type in the hour your are interested in 120d eh and find the timeframe of your interest Hit Print or Export if desired otherwise to exit the report and afterwards the Done button Jeppe K Moller Page 6 of 13 4 26 2003 Scandinavian Boiler Service Inc Scandinavian Boiler Service Inc Version 1 0
12. ine 6 is high reading is 55 SDME WARNING 6 20010508045839 000 20010506101338 20010508045645 12 WARNING Smoke density from Engine 6 is high reading is 53 SDME WARNING jl 20010508045637 000 20010506101338 20010508045638 13 WARNING Smoke density from Engine 1 is high reading is 65 SDM1 WARNING 2 20010508044341 000 20010506101338 20010508044343 14 WARNING Smoke density from Engine 6 is high reading is 49 SDME WARNING 4 20010508043335 000 20010506101338 20010508043339 15 WARNING Smoke density from Engine 6 is high reading is 86 SDME WARNING 41 20010508043247 000 20010506101338 20010508043326 16 WARNING Smoke density from Engine 1 is high reading is 61 SDM1 WARNING 6 20010508041902 000 20010506101338 20010508041908 17 WARNING Smoke density from Engine 1 is high reading is 99 SDM1 WARNING 20 20010508041836 000 20010506101338 20010508041856 18 WARNING Smoke density from Engine 1 is high reading is 100 SDM1 WARNING 5 20010508041815 000 20010506101338 20010508041820 19 WARNING Smoke density from Incinerator 1 is high reading is 45 SDM WARNING 1 20010508003859 000 20010506101338 20010508003900 20 WARNING Smoke density from Incinerator 1 is high reading is 49 SDM WARNING 5 20010508003853 000 20010506101338 20010508003856 21 WARNING Smoke density from Incinerator 1 is high reading is 45 SDM WARNING 2 20010508003850 000 20010506101338 20010508003652 22 WARNING Smoke density from Boiler 2 is high reading is 91 SDM10 WARNING a 20010507221412 0
13. o your screen From here you will be able to both Export and Print if you have selected the buttons in the Windows Styles options Though in some cases you may want to Export your report out to another format The situation might be the central office asking for a report in an electronically matter on a file so you can choose to export the report in an Excel spreadsheet or as shown below a HTML file readable in any internet browser Cancel Destination Disk file NOTE To create a report in a PDF format you need to print to the PDF995 printer Recommended approach is to print the report to a window described below and from here hit the printer icon which brings up the Print dialog from here you can choose to print all or only some pages Jeppe K Moller Page 4 of 13 4 26 2003 Scandinavian Boiler Service Inc Scandinavian Boiler Service Inc Version 1 04 Printer POF S95 on POFSS5SPORT Print Range Copies W Collate Copies Hit OK to fetch the records Save jn Desktop B ee Ez Tj ShowFile pdf Tt windowsplatFormmanual pdf File name SD M_report_prinsendam POF save as type PDF pdf d Cancel Save the PDF file to a location where you can find it afterwards either on the desktop or directly to the floppy disk drive located on the right side of the panel pc RK Another option is to Schedule the Print job to start at another time useable if it is a b
14. refer to this for elaboration on these subjects Possible user interactions on this screen are defined by the buttons in the graph Start Stop is self explanatory NOTE Pulling the scroll line below the graph makes the graph to slow running remember to hit the Start button when you are done scrolling Implode Explode makes the view bigger so one can see the entire hour or just a few seconds in 1 graph Restore sets the graph back to its default settings Print of course prints the graph Courser Mode and Zoom by Area Time are for getting a more fine grained view of the graphs behavior Cancel All Zoom reset the graphs default settings Jeppe K Moller Page 11 of 13 4 26 2003 Scandinavian Boiler Service Inc Scandinavian Boiler Service Inc Version 1 04 Alarm Viewer Help Alarm History Acknowledge View Alarm Banner AE S S 8 amp amp M All Groups 310 SYSTEM JH WARNING Smoke density From Engine 1 is high reading is 50 Normal Unack 04 15 03 15 24 56 Active Alarm Count is 5 Mote Date and time is GMT Greenwich Meantime Dublin London Current Position N vy SBS Alarm Viewer Only Warnings and System conditions are creating an alarm When the smoke density exceeds 50 an alarm is triggered A small message alarm status what time it occurred when the value got back to normal and when the alarm was acknowledged by the user is logged into the ala
15. rm database An alarm is indicated by the Alarm button turning yellow plus the user has the opportunity to toggle an Alarm Banner in the bottom of each page showing the most recent active alarm So no matter what screen the user is on an alarm would be visually indicated The user has different options on how to Acknowledge the alarms these are selectable through the Menu line on the top left The options are Configuration Filter Filter which alarms to see Multiselect Alarms Select alarms in separate window Print Print alarms Acknowledge Selected Ack checked alarms Acknowledge Page Acknowledge alarms on the page Acknowledge All Acknowledge all active alarms Write LogBook In lower right corner Attach a comment to any of the alarms to store in the logbook Type your comment in the text field and hit the Write button Jeppe K Moller Page 12 of 13 4 26 2003 Scandinavian Boiler Service Inc Scandinavian Boiler Service Inc Version 1 04 Alarms Trending Graphs Description Graphical Monitor Data Browser Alarm History Help msg name 1 WARNING Smoke density from Engine 2 is high reading is 98 SOM 2 WARNING Smoke density from Engine 3 is high reading is 100 SDM 3 WARNING Smoke density from Engine 4 is high reading is 100 SOM4 4 WARNING Smoke density from Engine 5 is high reading is 100 SOMA A WMAAARNING Smoke density from Incinerator 1 is high reading
16. s SOMA Engined 0 o LLL Pa a rer SDM2 Engine Opacity in D a a D SDM3 Engines SDM4 Engine4t SDMS Ausiliary1 SOME Auxiliary ee eee o 000 SDM Auxiliary O4 03 03 O4 08 03 O4 13 03 LSS0L2 59 16 01 55 16 01 59 SDMS Boiler 1 Time SEMS Boiler 2 SDM Incinerator Connected TrendCluster localhost Online Yes Timezone Eastern Daylight Time Make graph show the last 10 Hours Days Weeks Months E 7 F SDM Single The possible user interactions on this page are shifting between each smoke density monitor SDM Hitting the Select SDM graph brings up a dialog window prompting you to chose which SDM you want to see the trend graph from E SDM graph assignment fx Select SOM name Engine 2 Cancel Engine 3 3 Engine 4 Auxiliary 1 You can place the blue curser line wherever on the graph to show the actual value above the graph or read the value and timestamp from the mouse courser s pop up window To change the viewing duration to 10 Days Weeks Months simply click the buttons beneath the graph Jeppe K Moller Page 9 of 13 4 26 2003 Scandinavian Boiler Service Inc Scandinavian Boiler Service Inc Version 1 04 Another method which will let you manually select the timeframe to et E look at is choosing Zoom and the Manual rin Stats Properties 77777777T Selec Add Pen 200 Fen Settings SOs Offline Mode _Cffine Mode parents This
17. vian Boiler Service Inc for monitoring smoke density Designed for the SDM installation on ZEN t RoyalCaribbean Documents of interest Calibrating the SOM M V Vision of the Seas Na eaa GPS Information e a Latitude Course OOO World Map of Time Zones Longitude speed O00 Current Position M wf 1 FA SBS Description This system was developed by Scandinavian Boiler Service SBS in order to monitor and document the amount of smoke produced The system is a stand alone solution it consists of a number of Density Monitor SDM devices a junction box connecting the SDM s a PLC box connected to the junction box and finally the PC connects to the PLC in order to read its data The button User Manual will bring up the user manual for the SDM software application The button Calibrating the SDM will bring up a short description on how to calibrate the SDM circuit from the monitor boxes No Keyboard Mouse tell you how to work with the touch screen computer when no mouse and keyboard is attached World Map of Time Zones is the world mapped out with the different time zones The SDM system operates in GMT time zone In order to calculate current or past standard time use this map and the logged GPS longitude and latitude as a rough estimate A precise time zone has to be calculated from separate GPS software or web service not included in this SDM system Following screen shots
18. will bring your graph into Offline Mode so remember to bring it back Online when done and choose Zoom Restore to get the Panning Zooming Duration Length Duration Type i Hours original view back Move Duration Length Move Duration Type Start Time Start Date 8 31 57 PM 4 7 1 2003 Start ID _ Ape Chose Jeppe K Moller Page 10 of 13 4 26 2003 Scandinavian Boiler Service Inc Scandinavian Boiler Service Inc Version 1 04 4 Scandinavian Boiler Service Smoke Density Monitor Application Microphone F2Tools File Edit Display Insert Draw Arrange Animate Mode Tools Window Trending Graph Group Trending Help Engines z Historic Trends Real Time Trend Engines Auxiliary Boilers Incinerators 6 SDM Numbers 15 25 00 15 26 00 04 13 03 15 23 44 2 Minuts 30 Seconds 10 Seconds 04 13 03 15 26 14 gt la e C Title Real Time Minimum Value Maximum Yalue Average 1 Ben 7 NA NA NA 2 En 43 NA NA NA 3 TEng3 54 NA NA NA 0 NA NA NA Note Display Buffer has the Time Capacity set to 1 hour Current Position N vy SBS e lt gt Ready 992 600 4 0 0 100 SDM Groups Group Trending gathers multiple graphs for each system category Trending in general and the differences between historic and real time trending has been described in the help file on SDM Single screen please
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