Volume and Flow - SOLID APPLIED TECHNOLOGIES LTD (SolidAT)
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1. The default value of K Factor is 001 000 9 FLOW MEASUREMENT OF CUSTOM FLUME When custom flume measurements are required the user should configure SmartScan50 to map between FLOW and corresponding LEVEL SmartScan50 provides for a 24 point mapping table also known as strapping table For each point the user should define the level and the corresponding flow for this level The drawing below illustrates the LEVEL to FLOW mapping i VEN OD ETE ZAS um Level 0 9meter Flow 960m gt h Level 0 8meter Flow 840m h Level 0 6meter Flow 720m h I TOTAL HEIGHT Level 0 5meter Flow 600m3 h Level 0 4meter Flow 480m h P3 Level 0 3meter Flow 360m gt h P2 Level 0 2meter Flow 240m h Pi Level 0 imeter Flow 120m h 10 of 13 Solid Applied Technologies Ltd www solidAT com 40 Hutzot Hayozer info solidAT com Ashkelon 78170 Israel Tel 972 8 674 4051 Drum A SOLID Applied Technologies Ltd The strapping table is set as follows PPointnumber Point umber LEVEL measured from bottom of flume 000 400 Level is 0 4 meters Truncated part of FLOW 000480 Truncated part is 480 Decimal part of FLOW 480 000 Entry includes 3 rightmost digits from the truncated part Note that the last three digits entered in the previous step are displayed before the decimal point and FLOW for this LEVEL 4800 5 Desired volume is 4800 5 Liters that the user can enter one digit after the2. a o0 000 004800 80000 drawing is now Important notes 1 Values are entered as LEVEL not DISTANCE 2 First point indicates bottom of the vessel with minimum volume As you add more points to the strapping table the level increases corresponding to increasing volume 3 No need to add a point with a LEVEL zero to represent the bottom of vessel with zero volume 4 It is forbidden enter any zero value of volume the first volume value should be greater than zero 5 It is forbidden to enter a level value which is greater than TOTAL HEIGHT 6 The thickness of the slices does not need to be equal On the contrary for different vessel shapes it is reasonable to define thinner slices where the volume does not increase linearly 7 Minimum of 8 strapping points is required 4 of 13 Solid Applied Technologies Ltd www solidAT com 40 Hutzot Hayozer info solidAT com Ashkelon 78170 Israel Tel 972 8 674 4051 Brun SOLID Applied Technologies Ltd Setting SmartScan50 to VOLUME measurement From the main configuration menu set the following parameters e Type of application Set to Level e Units Set your own units i e meter inch feet etc e Tank height Set vessel height bottom to sensor Do not define the 4 20mA current values yet From the additional configuration menu set the following parameters e Pr O Set Ind1 for volume measurement e Pr 1 or Pr 2 Define strappin
3. user enters a minimum of 8 points and for each point the user defines LEVEL and corresponding VOLUME The drawing below illustrates the insertion of LEVEL points into the strapping table Sensor Level 8 meter Volume 9600 Liter Level 7 meter Volume 8400 Liter Level 6 meter Volume 7200 Liter TOTAL HEG Level 5 meter Volume 6000 Liter 10 meter Level 4 meter Volume 4800 Liter Level 3 meter Volume 3600 Liter Level 2 meter Volume 2400 Liter Level 1 meter Volume 1200 Liter 3 of 13 Solid Applied Technologies Ltd www solidAT com 40 Hutzot Hayozer info solidAT com Ashkelon 78170 Israel Tel 972 8 674 4051 Drum A SOLID Applied Technologies Ltd The strapping table is set by entering point by point from the low level and up Each point involves three main steps and step 3 consists of two entries Description Example Explanation a Pointnumber A Pointrumberd O LEVEL measured from bottom of tank 004 000 Level is 4 meters VOLUME for this LEVEL 4800 5 Desired volume is 4800 5 Liters Truncated part of the VOLUME 004800 Truncated part is 4800 3 2 Decimal part of the VOLUME 800 500 Entry includes 3 rightmost digits from the truncated part Note that in step 3 2 the user re enters the three rightmost digits which have been entered in step 3 1 and one additional digit to the right of the decimal point The strapping table that corresponds to the Point Level Volume step Volume step 2
4. 01 000 lt Ent gt Volume first screen Volume second screen P2 lt Ent gt Level Volume first screen Volume second screen P3 lt Ent gt Level Volume first screen Volume second screen P8 lt Ent gt Level Volume first screen Volume second screen 001200 lt Ent gt 200 000 lt Ent gt Searching 002 000 lt Ent gt 002400 lt Ent gt 400 000 lt Ent gt Searching 003 000 lt Ent gt 003600 lt Ent gt 600 000 lt Ent gt Searching 008 000 lt Ent gt 009600 lt Ent gt 600 000 lt Esc gt Pressing lt Esc gt after the eighth point indicates that point eight is the last point in the strapping table 6 LOOP CURRENT CONFIGURATION FOR VOLUME Once the user configures SmartScan50 to volume and sets the strapping table points it is possible to configure 4mA and 20mA parameters to represent volume values The default value of volume is set automatically based on the strapping table The 4mA indication will be set to the first point minimum value and the 20mA indication will be set to the last point maximum value 8 of 13 Solid Applied Technologies Ltd www solidAT com 40 Hutzot Hayozer info solidAT com Ashkelon 78170 Israel Tel 972 8 674 4051 Gan SOLID Applied Technologies Ltd For example based on the strapping table of the previous examples 4mA and 20mA will automatically be configured as follows e AmA 001200 e 20mA 009600 7 CONFIGURING SPECIAL VESS
5. CONFIGURATION FOR CUSTOM FLUMEG c secccccseccceseeceeeseeceeseeesesseesesseseesees 12 APPENDIX A VOLUME CALCULATIONS sticeisrcsecncinaasuuscemitevesnnlentstsitinsbianetnntaabiddvenvvideidasacceinninrsedniavayeeabhins 13 2 of 13 Solid Applied Technologies Ltd www solidAT com 40 Hutzot Hayozer info solidAT com Ashkelon 78170 Israel Tel 972 8 674 4051 Drum A SOLID Applied Technologies Ltd 1 SCOPE This document describes the configuration procedure of SmartScan50 unit for volume measurement and for flow measurement in custom flumes The document should be read jointly with the user manual of SmartScan systems 2 OBJECTIVES Familiarize the user of SmartScan50 with e Configuration methods for making volume and flow measurements e Configuring volume measurements using manual insertion of strapping tables e Configuring volume measurements using semi automatic insertion of strapping tables e Setting 4 20mA configurations for volume and for custom flow measurements e Weight calculations using the K factor 3 METHOD FOR MEASURING VOLUME Ultrasonic level sensors measure DISTANCE between the sensor and surface of the target If distance between sensor and bottom of tank is known TOTAL HEIGHT SmartScan50 can also calculate LEVEL For VOLUME the user should configure SmartScan50 to map between LEVEL and VOLUME SmartScan50 provides for a mapping table also known as strapping table of up to 24 points The
6. EL SHAPES For vessels which are of odd shapes VOLUME is not always linear related with LEVEL The user should define the slices of the strapping tables unevenly and include at least one point for each irregular mapping An example of such slicing is illustrated in the next figure FR TRS RITER LERE RGR AIA DRL LRT TIN NEA TERE EKA RRR In this drawing one can see that a fixed deviation in LEVEL at the vessel bottom will map to unequal VOLUME deviations At higher levels of the vessel the ratio between level and volume is fixed In this case it is better to define more slices at the bottom of the vessel The same guidelines as defined in previous sections apply to this case as well Important note It is recommended to use all 24 strapping table points for better accuracy 8 WEIGHT CALCULATIONS 9 of 13 Solid Applied Technologies Ltd www solidAT com 40 Hutzot Hayozer info solidAT com Ashkelon 78170 Israel Tel 972 8 674 4051 gem SOLID Applied Technologies Ltd In some applications the user would like to have the WEIGHT value of the vessel content instead of VOLUME Weight can be calculated if both VOLUME and specific gravity density of the material are known Let the measured volume be Y and the material gravity density be K then the weight X can be calculated as follows Weight Specific Gravity Density Volume The K Factor is defined Pr 3 of the additional menu
7. In semi automatic mode the level is measured and calculated automatically by SmartScan50 Accept the display level by pressing lt Ent gt The level measurement may be incorrect If so press lt Next gt to search for a next level target 3 Enter the volume value for this level 4 Fill the tank with known volume value As a result the level of the material within the vessel will be increased 5 For a new point the unit will calculate the new level 6 For the new point enter the new volume value 7 Repeat steps 4 through 6 until the last point is entered This method provides more accurate volume calculations when compared with the manual method but entails slower calibration due to the need for filling the vessel with known quantity per each point This method is activated from Pr 2 of the Additional menu Important note It is recommended that strapping table points will not overlap scan distance points Keep a gap of at least 40 cm between the nearest strapping table point and interference For example if there is an interfering echo at 2meter level use semi automatic level points at 1 6 meter and or 2 4 meter For example for the same vessel discussed above the process is as following 7 of 13 Solid Applied Technologies Ltd www solidAT com 40 Hutzot Hayozer info solidAT com Ashkelon 78170 Israel Tel 972 8 674 4051 Brun SOLID Applied Technologies Ltd P1 lt Ent gt Level Searching 0
8. a SOLID Applied Technologies Ltd Application Note SmartScan50 Volume and Custom Flume Configuration Version 1 1 June 2011 This document contains proprietary information that is the sole property of Solid Applied Technologies Ltd The document is submitted to the recipient for his use only By receiving this document the recipient undertakes not to duplicate or to disclose in part or the whole any of the information contained herein to any third party without a priory written permission from Solid Applied Technologies Ltd 1 of 13 Solid Applied Technologies Ltd www solidAT com 40 Hutzot Hayozer info solidAT com Ashkelon 78170 Israel Tel 972 8 674 4051 brun SOLID Applied Technologies Ltd Table of Contents kh 3 BET 3 3 METHOD FOR MEASURING VOLUME rrunnnrnnnnnrnnvnnnnnnnnnnnsnrnnnnnnsnsrnrnnnnnnsnnnnnsnnnnnnnnsnnnnnnnsnsnnsnnsnnnnnnnnsnnsen 3 4 MANUAL INSERTION OF STRAPPING TABLE urrnnnnnnrnnnnnnnrnnnnnnnrrnnnnnnrnsnnvnnnsnnnnnnnsnnnnsnnnnsnnsnnnsnnnnnnnsnnsnnnnnnn 5 5 SEMI AUTOMATIC INSERTION OF THE STRAPPING TABLE rerunnrnnnrnrnnnnrnrnnnnrnnnnnnrnnrnnsrnnnnsnsnrnsrnnnnnesnnnnene 6 6 LOOP CURRENT CONFIGURATION FOR VOLUMEE ccccesccccsseecceesscccsusescesseccesseesesseeceseeeeessanseesaasses 8 7 CONFIGURING SPECIAL VESSEL SHAPES Larven 9 SVEA TN 9 9 FLOW MEASUREMENT OF CUSTOM FLUME ssiucusiinescasicnvecsncedsneciesvabeheudatoeyneautiasesdpendeiebanssvontapsateusicerbes 10 10 LOOP CURRENT
9. decimal point The strapping table that corresponds to the above drawing is as follow Point Level Flow rst step Flow second step_ a ameter 000880 48000 amp oemeter 00020 72000 B fo meter 00060 96000 Important notes 1 Values entered are in LEVEL for not DISTANCE 2 First point indicates bottom of the flume and minimum flow it should be the first point value and not zero level which indicates empty flume As you add more points to the strapping table the level increases and so is the flow 3 The first point can be any value greater than zero 4 Thickness of strapping table slices does not need to be even For varying flume shapes it is reasonable to define thinner slices where the flow does not increase linearly 5 A minimum of 8 strapping points is required 6 No LEVEL value should be greater than TOTAL HEIGHT Ke Solid Applied Technologies Ltd www solidAT com 40 Hutzot Hayozer info solidAT com Ashkelon 78170 Israel Tel 972 8 674 4051 Drum A SDLID Applied Technologies Ltd Setting SmartScan50 for custom flume measurements From the main configuration menu set the following parameters e Type of application set to Flow e Units choose your own units i e M3 h GPM e Tank height set to distance from sensor face to bottom of flume Do not define 4 20mA current values yet From the Main menu set the following parameters e PARSH FLUM e F
10. el 001 000 lt Ent gt Volume first screen 001200 lt Ent gt Volume second screen 200 000 lt Ent gt P2 lt Ent gt Level 002 000 lt Ent gt Volume first screen 002400 lt Ent gt Volume second screen 400 000 lt Ent gt P3 lt Ent gt Level 003 000 lt Ent gt Volume first screen 003600 lt Ent gt Volume second screen 600 000 lt Ent gt P8 lt Ent gt Level 008 000 lt Ent gt Volume first screen 009600 lt Ent gt Volume second screen 600 000 lt Esc gt Pressing lt Esc gt after the eighth point indicates that this point is the last of the table 5 SEMI AUTOMATIC INSERTION OF THE STRAPPING TABLE Use semi automatic insertion of strapping table when e The ratio between LEVEL and VOLUME for your vessel is not known e The vessel is of unique shape and it is complicated or impossible to map between LEVEL and VOLUME 6 of 13 Solid Applied Technologies Ltd www solidAT com 40 Hutzot Hayozer info solidAT com Ashkelon 78170 Israel Tel 972 8 674 4051 Brun SOLID Applied Technologies Ltd Semi automatic insertion of strapping table involves a calibration phase using a controlled filling process and should be performed after interferences were identified and mapped using the Scan Distance technique The procedure for semi automatic insertion of mapping table is as follows 1 Start with an almost empty vessel or at the first point where the contained volume is known 2
11. g table With SmartScan it is possible to define the strapping table in two methods e Manual insertion of strapping table The user enters both LEVEL and VOLUME values e Semi automatic insertion of strapping table SmartScan measures LEVEL and the user only enters the corresponding VOLUME value Loop current values 4 20mA are set after strapping table is configured SmartScan50 is ready for volume measurement after exiting the configuration menu Important notes It is recommended to map vessel interferences using Scan Distance option Refer to the User Manual of SmartScan for details 4 MANUAL INSERTION OF STRAPPING TABLE Use manual insertion of strapping table when e There is a fixed known ratio between LEVEL and VOLUME for your vessel e The vessel is of standard shape such as cylinder or cone or and it is easy to map LEVEL to VOLUME Refer to appendix A for some examples e Itis not possible to use the semi automatic mode Manual insertion of strapping table is performed with the additional menu configuration Pr 1 5 of 13 Solid Applied Technologies Ltd www solidAT com 40 Hutzot Hayozer info solidAT com Ashkelon 78170 Israel Tel 972 8 674 4051 Brun SOLID Applied Technologies Ltd When entering Pr 1 SmartScan50 will prompt with the first point P1 For each point the user should define the required LEVEL and corresponding VOLUME For example for the vessel discussed above P1 lt Ent gt Lev
12. or custom flume use 0 E01 for additional information please check SmartScan User Manual After defining a strapping table in one of the methods mentioned above set 4mA and 20mA values as described in the user manual The device is ready for custom flume measurement after exit from the configuration menu 10 LOOP CURRENT CONFIGURATION FOR CUSTOM FLUMES Once the user configures the SmartScan50 to custom flume and sets the strapping table points it is possible to configure 4mA and 20mA parameters for FLOW values The value of FLOW should be entered manually according to the strapping table The 4mA indication should be configured at the first point minimum value and the 20mA indication should be configured at the last point maximum value For example base on the strapping table in the table above 4mA and 20mA should be configured as following e AmA 000120 e 20mA 000960 Important notes 20mA default value is 55490 KE VA Solid Applied Technologies Ltd www solidAT com 40 Hutzot Hayozer info solidAT com Ashkelon 78170 Israel Tel 972 8 674 4051 Sg SOLID Applied Technologies Ltd APPENDIX A VOLUME CALCULATIONS When the vessel has a cylindrical or conical standard shape it is easy to calculate the volume of the vessel with mathematical volume equations The following figure illustrates cylindrical and conical vessel volume calculations Using the equations it is easy to calculate the height to vol
13. ume mapping For example assume a cylinder shaped vessel with 2 meter radius and 8 meter height The following table defines the height to volume mapping V m h 32 2 2513 V ar h a 3 37 70 V m h 2 4 5027 V m h 2 5 6283 V m h x2 6 7540 V ar h 2277 87 96 V ar h 2278 100 53 13 of 13 Solid Applied Technologies Ltd www solidAT com 40 Hutzot Hayozer info solidAT com Ashkelon 78170 Israel Tel 972 8 674 4051
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