Verification report
Contents
1. 31 AP FENDI E 33 TEST DON seien S nus 33 P AgroTech DANETV 1 INTRODUCTION Environmental technology verification ETV is an independent third party assessment of the performance of a technology for a specified application under defined conditions and quality assurance This document is the verification report resulting from verification of LevelTec online monitoring system for slurry storage tanks 1 1 Name of technology The technology verified was LevelTec 1 2 Name and contact of proposer LevelTec is developed and produced by PlusTec Aps Mads Bjerresvej 8 DK 7500 Holstebro Denmark Website www plustec dk Contact person of PlusTec Aps J rgen Seerup E mail js plustec dk Phone 45 96 10 40 80 Mobil phone 45 20 32 66 54 1 3 Name of verification body and verification responsible The verification was performed by DANETV Test Centre AgroTech Agro Food Park 15 DK 8200 Aarhus N Denmark Verification responsible Torkild S Birkmose Phone 45 87 43 84 06 E mail tso agrotech dk 1 4 Verification organisation including experts The verification was conducted by Danish Centre for Verification of Climate and Envi ronmental Technologies DANETV which performs independent tests and verifications of technologies for the reduction of climate changes and pollution The verification was planned and conducted to satisfy the requirements of the EU ETV pilot programme EU ETV established by the2. Ino x re No Raw data available QA of raw data adequate Yes Ino x Ives NT Performance claims sustained Performance claims relevant Ye Ino X Yee Nol Conclusions quick scan Since there are no existent data a test has to be performed to generate the data neces sary for the verification Performance claims should be discussed with proposer before planning the test 15 12 2011 Thorkild Q Frandsen Original signed 15 12 2011 LevelTec Verification Report 25 AgroTech x DANETV it Es Dorolech APPENDIX C Proposal LevelTec Verification Report 26 AgroTech P 7 mg AgroTech DANETV VERIFICATION PROPOSAL Verification bod AgroTech A S PlusTec Aps Torkild S Birkmose Address Agro Food Park 15 Address Mads Bjerresvej 8 8200 Aarhus N 7500 Holstebro Denmark 45 87 43 84 06 45 87 43 84 10 Telefax O tsb agrotech dk Date quick scan 15 12 2011 E l Previous verification performed Yes date N Description of technology technical documentation LevelTec is developed to reduce damages from slurry leaking from storage tanks Lev elTec is continuously measuring the liquid level in storage tanks LevelTec is based on a pressure sensor and the alarm messages are communicated to the farm owner or his employee via SMS messages The LevelTec pressure sensor and cable are placed ina PVC tube mounted on a galvanised steel frame mounted on the inner side of the slurry tan
3. 10 warning meter threshold value is reached to the SMS warning message is received on the mobile phone the slurry level continues to raise That is the reason why there is only measured 0 07 meter from the slurry level to the artificial rim of the slurry tank Tank overflow 0 450 meter In the time from LevelTec registers that the 0 02 alarm meter threshold value is reached to the SMS warning message is received on the mobile phone the slurry level continues to raise That is the reason why the slurry level has reached the artificial rim of the slurry tank when the SMS alarm message was received It is seen from table 6 that Level Tec both the full tank warning message and the tank overflow alarm message were received Thus these functions are working as claimed by the technology supplier 5 1 3 Alarm function in case of failing power supply LevelTec online monitoring system has to be in operation 24 hours per day throughout the year to give the desired security Thus a stable power supply is required Still it is an advantage if the slurry tank owner receives a message in case the power supply is failing This can be secured by installing a battery that makes it possible for LevelTec to send an SMS alarm message The technology supplier claims that LevelTec has this function This is tested as part of this verification In table 7 the results from this test are shown Table 7 Results from testing LevelTec in case of failin
4. bedding material for the cows During storage the sand will sediment in the slurry storage tank under the formation of a base layer in the bottom of the tank Over time this sand layer will accumulate since it Is difficult to pump this out even after mixing the storage tank Thus since the pressure sensor is installed only 0 20 meter from the bottom of the slurry tank there is a risk that the pressure sensor will be covered by sand and this could potentially give problems for the performance of the LevelTec As part of this verification the function of LevelTec was tested in a situation where the pressure sensor was covered Figure 6 shows the test set up LevelTec Verification Report 18 AgroTech errs OF DANETV ut AgroTech Figure 6 Photo 1 shows the LevelTec pressure sensor installed in the small scale slurry container used for the performance test Photo 2 shows the LevelTec sensor covered by sand Photo 3 show how the sand is placed around the LevelTec sensor after the slurry container was filled with slurry and emptied again It is seen that the sand is still laying around the sensor It was concluded from the test activities that uncertainties in the pressure measure ments can occur when the LevelTec sensor is fully covered by a thick layer of sand Thus in such situations there is a risk that LevelTec will not detect a sudden decrease in the slurry level and send a SMS alarm message To avoid this situation it
5. is recommended the slurry tank owner to check the thickness of the sand layer once a year immediately after the storage tanks has been emptied in connection with land application of slurry If the bottom layer has become so thick that there is a risk the pressure sensor will be covered actions should be taken to remove the sand e g using an excavator before slurry is pumped to the tank Alternatively the pressure sensor can be raised so that it is now place 0 40 0 50 meter from the bottom of the tank However if the pressure sensor is raised LevelTec has to be cali brated again 5 6 Recommendations for verification statement It is recommended to issue a verification statement based on the verified performance described in section 5 1 5 2 and 5 4 6 QUALITY ASSURANCE Internal review of the verification protocol verification report test plan and test report was done by Thorkild Q Frandsen AgroTech In addition Anders Bonde Kentved DELTA has reviewed the test results of the environmental test activities performed by DELTA No system audit was done for this verification External review of the test report and verification report was done by J rgen Hviid Knowledge Centre for Agriculture LevelTec Verification Report 19 AgroTech DANETV mk AgroTech 7 REFERENCES 1 AgroTech 2009 AgroTech Test Centre Quality Manual Not published 2 PlusTec 2011 Product Sheet for LevelTec In Danish 2 pp 3 PlusTec
6. wall The photo on the right shows the control unit installed on the outside of the tank wall 3 1 Application and performance parameter definitions The intended application of LevelTec is defined in terms of the matrix the purpose and exclusions The matrix is the type of material that the LevelTec online monitoring system is intend ed for As part of this verification LevelTec has been tested for pig slurry and cow slur ry It is assumed that the results of the tests will also be valid for LevelTec used for di gested biomass from a biogas plant and for mink slurry Normally the total solids content of such matrices is within the range of 2 0 10 0 The purpose of a technology is defined in terms of what measurable properties that are affected by the technology and how these properties are affected In case of LevelTec the overall purpose is to 1 detect a potential risk for leakage and 2 to report this elec tronically to the slurry storage tank owner or his employee To evaluate this the per formance parameters listed in table 1 have been included in this verification Table 1 Performance parameters for the verification of LevelTec Parameter Value Threshold value for reporting leakage measured as decrease in slur 0 05 meter ry level message is received by the person responsible for the tank person in case of slurry tank overflow LevelTec Verification Report 8 AgroTech P 7 mg AgroTech DANETV An a
7. 2011 User Manual for LevelTec In Danish 18 pp 4 dlg Tele 2011 Product sheet for DLG slurry tank monitoring system In Da nish 1 p 5 Milj ministeriet 2011 Bekendtg relse nr 100 af 9 februar 2011 om ndring af bekendtg relse om husdyrbrug og dyrehold for mere end 3 dyreenheder husdyrg dning ensilage m v Krav om gyllebarrierer m v In Danish 6 Milj styrelsen 2011 Milj styrelsens vejledning til kravene i 15a i husdyr g dningsbekendtg relsen om etablering af beholderbarrierer terr n ndrin ger og beholderalarmer Revideret 20 december 2011 Milj styrelsen Er hverv 15 pp In Danish LevelTec Verification Report 20 AgroTech gn A DANETV ee u Dorolech APPENDIX A Terms and definitions LevelTec Verification Report 21 AgroTech P 7 AgroTech DANETV Analytical labo Independent analytical laboratory used to analyse test samples ratory Application The use of a product specified with respect to matrix target effect and limitations DANETV Danish center for verification of environmental technologies DANETV test Preliminary name for the verification bodies in DANETV with a verification center and a test sub body Effect The way the target is affected Environmental Ready to market or prototype stage product process system or service product based upon an environmental technology Environmental The practical application of knowledge in the environmental ar
8. European Union An internal and an external technical expert provided independent reviews of the plan ning conducting and reporting of the verification and tests The technical experts as signed to this verification and responsible for review of the verification plan and report documents include Internal expert Thorkild Q Frandsen AgroTech Agro Food Park 15 DK 8200 Aarhus N Phone 45 8743 8468 e mail taf agrotech dk Part of the test results have also been reviewed by Anders Bonde Kentved Venlighedsvej 4 DK 2970 H rsholm Phone 45 72 19 42 75 e mail abk delta dk LevelTec Verification Report 4 AgroTech meee OF DANETV mk AgroTech External expert J rgen Hviid Knowledge Centre for Agriculture Agro Food Park 15 DK 8200 Aarhus N Denmark Phone 45 87 40 55 69 E mail jrh vfl dk An overview of the organisation associated with test and verification is given in figure 1 AgroTech management Lars Byrdal Kjaer AgroTech Test Center Thorkild Frandsen Test center verification Test center test sub body nnar Mikkelsen Niels Ove Nielsen Technical experts Figure 1 Organisation of test and verification 1 5 Verification process The verification and the test were conducted in two separate steps as required by the EU ETV pilot programme The steps in the verification are shown in Figure 2 Verification x sub body Test Jr Ge m z SCH Jk f Access Plan ch Test a
9. For slurry tanks without power supply in stalled PlusTec offers a power solution based on a solar panel mounted on the slurry tank However the solar panel has not been tested as part of this verification Even small changes in the slurry level are measured by the pressure sensor A de crease in the slurry level results in a lower pressure and vice versa LevelTec is pro grammed so that when a sudden pressure decrease is measured a SMS message is sent to the owner of the slurry tank or another person responsible for the slurry tank The purpose of the SMS message is to make it possible to take immediate actions in case of leakages Thereby it is possible to avoid or minimize pollution of nearby streams and lakes LevelTec can also be used as a slurry storage management system that gives the farmer online information about actual available capacity via log in to an internet based database showing all inputs and outputs from the specific slurry tank Furthermore the slurry management system can be used for an online registration of on which farms and fields the slurry is used This information can be used as input to making the annu al manure account which is mandatory for all livestock farms in Denmark However this feature is not tested as part of this verification LevelTec Verification Report 7 AgroTech P x AgroTech DANETV Figure 4 The photo on the left shows the PVC tube installed on the inner side of the tank
10. Table 2 includes a list of environmental test parameters for this verification and corre sponding reference standards Table 2 Environmental test parameters included in the verification of LevelTec la i www To verify the ability of the test object to operate according to specifications at the upper temperature limit of the use environment 2 Cold operational including To verify the ability of the test object to initiate normal op cold start up eration and operate according to specifications at the lower temperature limit of the use environment 3 Humidity To verify the ability of the test object to operate under and withstand the deteriorative effects of high tempera ture humidity and cold condition To verify the ability of the test object to operate according to specifications when exposed to water in the use envi ronment likely to occur during normal use Bi ae ational impacts likely to occur during normal use during conditions of cable bending likely to occur during LevelTec Verification Report 9 AgroTech P 7 AgroTech DANETV Tora Electrostatic discharge To verify that electrostatic discharge occurring on the equipment or in its vicinity does not affect its perfor mance or causes malfunction or permanent damage It is also a test of proper grounding or shielding inside the test object To verify the immunity of the test object to fields generat ed by intentional transmitters rad
11. ea technology Evaluation Evaluation of test data for a technology product for performance and data quality Independent persons qualified on a technology in verification The type of material that the product is intended for Method Generic document that provides rules guidelines or characteristics for tests or analysis Liquid fraction Liquid or thin fraction derived from the separation of slurry Performance The effects foreseen by the vendor on the target s in the matrix of in claim tended use Performance Parameters that can be documented quantitatively in tests and that pro parameters vide the relevant information on the performance of an environmental technology product Detailed description of the use of a standard or a method within one body The party producing the product Standard Generic document established by consensus and approved by a recog nized standardization body that provides rules guidelines or characteris tics for tests or analysis The property that is affected by the product Test center test Sub body of the test center that plans and performs test LevelTec Verification Report 22 AgroTech DANETV sec A roTech Test center Sub body of the test center that plans and performs the verification verification sub body Test testing Determination of the performance of a product for parameters defined for the application Verification Evaluation of product performance parameters for a sp
12. ecified application under defined conditions and adequate quality assurance LevelTec Verification Report 23 AgroTech x DANETV it Es Dorolech APPENDIX B Quick scan LevelTec Verification Report 24 AgroTech P 7 k A roTech DANETV QUICK SCAN REPORT Test center Proposer Name Contact Address Address 15 12 2011 vs Date no x Product description LevelTec is developed to reduce damages from slurry leaking from storage tanks Level Tec is continuously measuring the liquid level in storage tanks If unexpected changes in the liquid level are registered a SMS message is sent to the farmer or his employees Yes X In Ives x Ino Performance claims Matrices The LevelTec system is intended for use in storage tanks for livestock slurry and storage tanks for digested biomass at biogas plants Targets Number of centimetres of slurry measured from the buttom of the tank Number of centimetres of slurry measured from the upper edge of the tank Effects In case of unexpected decreases in the liquid level or if the storage tank is full and there is a risk of overflow the LevelTec system shall generate a SMS message which can be sent to 1 5 different mobile numbers Product description clear Performance claims clear yes X N ves No X Existing test data Yes Ino x Ives In IL Test report available Yes Ino X Yves In Test methods adequate Yes
13. erved dur operational ing the exposure Further no damages or deteriorations were observed during the visual inspec tion performed after the exposure Impact surface IEC 60068 2 63 1991 No malfunction was observed dur point operational ing the exposure Further no damages or deteriorations were observed during the visual inspec tion at standard atmospheric con LevelTec Verification Report 16 AgroTech Ki AgroTech T unn EE black plastic part Cable bending Not available No malfunction was observed dur ing the exposure Further no damages or deteriorations were observed during the visual inspec tion at standard atmospheric con ditions Electrostatic dis IEC 61000 4 2 2001 No malfunction was observed dur charge Performancoe criterion ing the exposure and the function of the test objects was OK after the exposure Performance crite rion B Radiated RF im IEC 61000 4 3 2006 No malfunction was observed dur munity Performance criterion ing the exposure and the function of the test objects was OK after the exposure DANETV Conducted radio IEC 61000 4 6 2007 No malfunction was observed dur frequency Performance criterion ing the exposure and the function of the test objects was OK after the exposure Burst Fast transi IEC 61000 4 4 2004 No malfunction was observed dur ents Performance criterion ing the exposure and the function of the test objects was OK after the exposure 12 Surge vol
14. eseeeseeeaeeeaeeeneeenaes 10 5 1 1 Detection and reporting a decrease in slurry level of 0 05 meter 11 5 1 2 Full tank warning and tank overflow alarm functions 12 5 1 3 Alarm function in case of failing power supply 13 514 Alarm forwarding TUN CHON u nee 14 5 1 5 Automatic switching on LevelTec after manual switching olff 14 5 2 Performance parameter suMMary nenn nenenenenenenenenenenenenen 15 5 3 Evaluation Of test guallly E 15 5 1 CONO e EEE 15 5 32 A ee ns ee S n Su ee ee 16 5 3 3 Summary of amendment and deviations nenne nenn nen nenne nenn nnne nennen 16 5 4 Additional parameter suMMary nenne nenn nnnne nenn nenennnnenennnnnnennnn 16 5 4 1 Environmental test parameters nenn nenn nenn nenn nenn nenn nenn nenn nenn nenn nenenenenenenen 16 SA2 GE 100 010 0 EE EN a e i 18 5 5 Operational en E 18 5 6 Recommendations for verification statement rrrnrrnnnrvnnrvnrrrnnrrnrrnnnrrnnrrnernnernnrnnnnnnn 19 6 QUALITY Eege 19 7 tee 20 i 2 DANETV gg A rolech DD EEE EE 21 Terms and GENIOS E 21 APPENDIX P 24 UK SCAN een E EAE EE E s s sss s 24 PENN 26 POPOSIT EEE 26 APPENDIE Du 29 SDpecili6 v eriticali on OF OLOCO nennen een 29 APPEND GE 31 Amendment and deviation report for verification
15. est staff it was not possible to follow the time schedule described in the test plan Consequently the test report and the veri fication report were delayed 5 4 Additional parameter summary The following two sections include a summary of the additional parameters for this veri fication 5 4 1 Environmental test parameters Table 11 shows for each environmental test parameter the reference standard or refer ence specification used together with the results of the test activities Table 11 Results from evaluation of environmental test parameters Parameter Reference standard specification 1 Dry heat opera IEC EN 60068 2 2 2007 No malfunction was observed dur tional ing the exposure Further no damages or deteriorations were observed during the visual inspec tion at standard atmospheric con ditions Cold operational IEC EN 60068 2 1 2007 No malfunction was observed dur including cold ing the exposure Further no Start up damages or deteriorations were observed during the visual inspec tion at standard atmospheric con ditions 3 Humidity IEC 60068 2 30 2005 No malfunction was observed dur ing the exposure Further no damages or deteriorations were observed during the visual inspec tion at standard atmospheric con ditions 4 Water operation IEC 60529 2001 Neither ingress of water nor mal al function was observed after the exposure Transient shock IEC EN 60068 2 57 1999 No malfunction was obs
16. g power supply Time when power supply was disconnected Time for reception of SMS alarm 12 03 2012 07 38 12 03 2012 07 39 15 03 2012 10 48 15 03 2012 10 50 15 03 2012 13 42 15 03 2012 13 43 It is concluded from the test that the alarm function in case of failing power supply is working as claimed by the technology supplier LevelTec Verification Report 13 AgroTech P 7 mg A roTech DANETV 5 1 4 Alarm forwarding function If a potential leakage is registered from the slurry storage tank it is crucial that the SMS alarm message is actually received by a person who can take immediate actions to stop the leakage and minimize the risk for pollution of nearby streams and lakes There is a risk that the person to whom the SMS alarm message is sent will not see this im mediately Perhaps the person has put the mobile phone away or the mobile phone has run out of battery According to the technology supplier LevelTec will send an SMS alarm message to an other mobile phone number if LevelTec is not reset 5 minutes after the SMS alarm message is sent And if there is still no reaction from the receiver of the second SMS message an SMS alarm message is send to a third mobile number LevelTec can for ward the SMS alarm message to up to five mobile numbers If there is still no action taken Levellec sends SMS messages to the first mobile number again This function has been tested as part of the verification A leakage has been si
17. iling power supply works as claimed first person did not result in actions that reset the alarm works as claimed The LevelTec system is automatically switched on following a manu Yes this function al switching off e g during emptying of storage tank works as Claimed Note Under assumption of satisfactory mobile phone connection coverage 53 Evaluation of test quality 5 3 1 Control data The performance test was done using a small scale slurry container made of plastic which is semi transparent The slurry level inside the plastic container is measured us ing a rule mounted on the outer side of the container Due to foam occurring on the slurry surface there is some uncertainty involved when reading the slurry levels Thus in the performance test performed as part of this verification slurry levels have been read and reported within 5 mm intervals since it gives no sense to report levels with higher accuracy The data on slurry levels which are read manually are com pared with the data registered by LevelTec and logged in the internet database The comparisons showed that the manually read slurry levels were in accordance with the slurry levels logged in the internet database LevelTec Verification Report 15 AgroTech P 7 k AgroTech DANETV 5 3 2 Audits No audit was undertaken for this specific verification task 5 3 3 Summary of amendment and deviations Due to many other on going tasks of the involved t
18. io TV cell etc 10 Conducted radio frequency To verify the immunity of the test object to low frequency fields generated by intentional transmitters AM radio TV cell etc Applicable to AC input and I O cabling greater than 3 m in length 11 Burst Fast transients To verify the immunity of the test object to switching and transient noise Applicable to AC DC input and I O cabling greater than 3 m 12 Surge voltage To verify the immunity of the test object to switching and lightning induced transients Applicable to AC DC power inputs as well as I O cabling which exceeds 30 m To verify that the unintentional E field emissions from the test object in normal operating mode is below the speci fied limits To verify that the unintentional emissions conducted back on the AC power mains is below the specified limits munit magnetic fields tions AC power input 3 2 2 User manual The LevelTec user manual was evaluated as part of the verification 4 EXISTING DATA 4 1 Accepted existing data No data from previous tests have been included in the verification of LevelTec 5 EVALUATION 5 1 Evaluation of performance parameters The performance parameters have been defined on the basis on two overall purposes e To verify that Level Tec meets the requirements for slurry storage tank alarms as described by the Danish Environmental Protection Agency 5 6 e To verify that LevelTec is functioning as claimed by the proposer P
19. k wall At the end of the PVC tube there is a stand in which the pressure sensor is kept in a fixed position approximately 0 20 meter above the bottom of the slurry tank The control unit including the GSM modem used for communication with mobile phones is installed on the outside of the slurry tank wall LevelTec requires a 230 VAC power Supply For slurry tanks without power supply installed PlusTec offers a power solution based on a solar panel mounted on the slurry tank However the solar panel has not been tested as part of this verification Even small changes in the slurry level are measured by the pressure sensor decrease in the slurry level results in a lower pressure and vice versa LevelTec is programmed so that when a sudden pressure decrease is measured a SMS message is sent to the own er of the slurry tank or another person responsible for the slurry tank The purpose of the SMS message is to make it possible to take immediate actions in case of leakages Thereby it is possible to avoid or minimize pollution of nearby streams and lakes Intended application of the technology The intended application of LevelTec is defined in terms of the matrix the purpose and exclusions The matrix is the type of material that the LevelTec online monitoring sys tem is intended for Ae part of this verification LevelTec has been tested for pig slurry and cow slurry It is assumed that the results of the tests will also be valid for Le
20. kage part 1 No alarm SE 15 min Leakage part 2 55 sec Total leakage 5 1 2 Full tank warning and tank overflow alarm functions Leakages from slurry storage tanks can result from tank overflow This will occur if slur ry is pumped from the animal housing system to a storage tank which is already lull It is claimed by the technology producer that LevelTec can be used to prevent this situ ation According to the user manual an SMS warning message is sent to the tank own er when the level reaches 0 10 meter from the rim of the storage tank The tank owner LevelTec Verification Report 12 AgroTech P 7 mg A roTech DANETV has to reset LevelTec after reception of an SMS warning message If the slurry level continues to raise Levellec sends an SMS alarm message when the slurry level reaches 0 02 meter from the rim of the storage tank As part of this verification the full tank warning and the tank overflow alarm functions were tested The tests were performed using the small scale slurry container First the height of the container was artificially set to 0 45 meter This was done by sending SMS commandos to LevelTec Then slurry was led to the slurry container and SMS messages were waited for Table 6 shows the results from these tests Table 6 Results from testing the full tank warning and tank overflow alarm functions LevelTec when SMS was received Full tank 0 380 meter In the time from LevelTec registers that the 0
21. larm is registered and communicated to person responsible for the tank in case of failing power suppl Alarm is forwarded to a new person in case the communication to the first person did not result in actions that reset the alarm The LevelTec system is automatically switched on following a manu Yes no al switching 0 duri The verified technology includes a complete LevelTec Online Monitoring System in cluding a pressure sensor cabling and a control unit In order to do the test and veriti cation auxiliary equipment in terms of various mobile phones has been used for com munication with LevelTec Online Monitoring System The technology supplier offers a solution for power supply based on solar panel for slurry storage tanks without electric supply installed However this additional solar panel was excluded from this verification 3 2 Additional parameters Apart to the performance parameters a number of additional parameters were defined as part of this verification Some of the additional parameters were evaluated as part of an environmental test of Levell ec performance by DELTA Moreover the user manual of LevelTec was evaluated as part of this verification 3 2 1 Environmental test parameters The main purpose of the environmental test was to verify the ability of LevelTec to withstand or operate within specified tolerances while being exposed to the environ mental conditions likely to be encountered during normal use
22. lusTec and described in the LevelTec product sheet 2 and LevelTec User Manual 3 LevelTec Verification Report 10 AgroTech gt BR AgroTech DANETV The test activities were undertaken in a small scale slurry container installed on a bio gas plant to facilitate fast simulations of leakages under controlled conditions Leak ages are simulated by opening a tap installed in the bottom of the slurry container Fig ure 5 shows the small scale slurry container used for the performance test of Levellec Figure 5 The small scale slurry container used for the performance test of LevelTec On the left photo the LevelTec control unit is seen as a grey box installed on the end of the slurry container By undertaking the performance test at a biogas plant using slurry from many different farms it was possible to test the LevelTec Online Monitoring System using different slurry types The performance of LevelTec was tested and verified using five difference slurry types matrices An overview of the five slurry types is given in table 3 below Table 3 Overview of the five slurry types used for the performance test of LevelTec Ft s ss Mixture of sow and piglet slurry Mixed pig slurry with fodder residues Mixed pig slurry Fattening pig slurry 5 1 1 Detection and reporting a decrease in slurry level of 0 05 meter A number of test activities have been performed to verify the basic alarm function of the LevelTec Online Mo
23. mulated in the small scale slurry container When the SMS alarm messages were received re setting the LevelTec was omitted The time for reception of the SMS alarm messages were registered The test was repeated twice and the results are presented in table 8 Table 8 Results from testing the SMS alarm forwarding function of LevelTec message number 2 25 minutes SMS alarm message received on mobile number 1 again It is concluded that the alarm forwarding function is working as described by the tech nology supplier 5 1 5 Automatic switching on LevelTec after manual switching off Sometimes slurry is pumped from the storage tank to a slurry trailer to be applied on the field or to be moved to another tank or transported to a biogas plant This will cause the slurry level to decrease and an SMS alarm message will be generated even though there is no leakage To avoid SMS alarm messages in such situations it is possible to switch off the Level Tec alarm function for a certain number of hours This is done by sending an SMS message to LevelTec In the SMS message it is specified for how many hours Level Tec should be switched off According to the technology supplier LevelTec will auto matically switch on again after the specified number of hours This function is tested and the results are presented in table 9 Table 9 Results from testing the automatic switching on LevelTec after manual switching off 8 41 An SMS command is sent
24. nd de Report Eegen assessment w ErAyerificatio VP document N Verificate I HE i Internal ae audit J Expert zen group QA J So group QA Figure 2 Verification steps The verification process is described in the AgroTech Test Centre Quality Manual 1 LevelTec Verification Report 5 AgroTech P 7 AgroTech DANETV This verification protocol the test plan and the process document shall be seen as one consolidated verification description 1 6 Deviations to the verification protocol There have been no deviations to the verification protocol 2 OVERALL DESCRIPTION OF THE TECHNOLOGY TYPE The technology verified is one of several technologies on the Danish market used for online monitoring of slurry storage tanks he basic function of these technologies is to register sudden drops in the slurry level and to report this to the owner or employee electronically The purpose is to make it possible to take immediate actions in case of leakages and thereby avoid or minimize pollution of nearby streams and lakes In addi tion to the basic function the different technologies have a number of extra features and functions The online monitoring systems can be based on different operating principles Most of the systems on the Danish market in 2012 are based on a pressure measuring sensor installed inside the slurry storage tank near the bottom The sensor i
25. nitoring System To detect a decrease in slurry level and when the threshold value is reached to report this via a SMS message Leakages of different sizes are simulated by opening the tap to different extent In tests to simulate large leakages the tap was full open and in tests to simulate small leakages the tap was open to a very small extent As part of the test the time from the leakage started until the alarm SMS was received on the mobile phone was measured Also the decrease in slurry level from the leakage started until reception of the SMS message was measured Results from these test activities are presented in table 4 LevelTec Verification Report 11 AgroTech DANETV mk A roTech Table 4 Results from testing the basic alarm function in small scale slurry container Slurry type 1 1 60 TS Small leakage Medium leakage Large leakage 7 mm minut 43 mm minut 130 mm minut 5 Small leakage Medium leakage Large leakage 1 TS refers to total solids a measure of the dry matter content of the slurry Table 5 Results from testing the threshold value for triggering an SMS alarm message Test Type of leakage Decrease in slurry Time from leakage to reception no simulation level mm of alarm SMS One single leakage 1 min 30 sec u BEE WW BEE Leakage part 1 25 No alarm after 15 min 4 Leakage part 2 40 38 sec Total leakage gt Leakage part 1 No alarm 15 min 5 Leakage part 2 44 sec Total leakage Lea
26. on protocol is attached to the verification report as a separate document LevelTec Verification Report 30 AgroTech ep X DANETV I Fran Es Agrolech APPENDIX E Amendment and deviation report for verification LevelTec Verification Report 31 AgroTech gt AgroTech DANETV See description of deviation from original time schedule under chapter 5 LevelTec Verification Report 32 AgroTech x DANETV it Es Dorolech APPENDIX F Test report LevelTec Verification Report 33 AgroTech gt AgroTech DANETV The test report with the test plan included as appendix is attached to this verification report as a separate document LevelTec Verification Report 34 AgroTech
27. s connected to a control unit from which a text message is transmitted to mobile phones in case of a sudden drop in the slurry level 3 DESCRIPTION OF TECHNOLOGY FOR VERIFICATION Like most other online monitoring systems on the Danish market LevelTec is based on a pressure sensor and the alarm messages are communicated to the farm owner or his employee via SMS messages The LevelTec pressure sensor and cable are placed in a PVC tube mounted on a galvanised steel frame mounted on the inner side of the slur ry tank wall At the end of the PVC tube there is a stand in which the pressure sensor is kept in a fixed position approximately 0 20 meter above the bottom of the slurry tank The control unit including the GSM modem used for communication with mobile phones is installed on the outside of the slurry tank wall See Figure 3 and Figure 4 LevelTec Verification Report 6 AgroTech DANETV mk AgroTech Figure 3 To the left is shown a cross section of a slurry storage tank with LevelTec installed on the tank wall A PVC tube is mounted on the inner side of the tank wall light blue The pressure sensor drawn in red colour is placed inside the tube and lowered to a position approximately 0 20 meter above the bottom of the tank To keep the pressure sensor in a fixed position a stand is mounted at the end of the PVC tube The stand is shown in dark blue colour on the right side of the figure LevelTec requires a 230 VAC power supply
28. t no change of actual operation state or store data is allowed It is concluded that the test object LevelTec online monitoring system complete with pressure sensor and cabling meets the relevant requirements of the reference stand ards reference specifications Full information about the environmental test is included in the DELTA Test Report Environmental Testing of LevelTec Online Monitoring Sys tem performed for Plus Tec ApS 5 4 2 User manual The Levellec user manual is 18 pages and formulated in Danish The manual is read and evaluated as part of this verification According to the user manual switching off the LevelTec alarm function can be done using two commands ALARMOFFXX and GYLLEOFFXX XX refers to the number of hours the alarm function shall be switched off However during the test it was only the command GYLLEOFFXX that actually switched off the alarm function It is recom mended that the user manual is updated accordingly Moreover it is recommended that the user manual is updated so it includes instructions for calibration of LevelTec In addition In general the user manual contains full information and it is clearly formulated 55 Operational parameters Normally slurry contains a certain amount of sand e g from the fodder or from the wheels of the machines moving in and out of the livestock housing systems Especially large amounts of sand are found in slurry from cow housing systems where sand is used as
29. tage IEC 61000 4 5 2005 No malfunction was observed dur Performance criterion ing the exposure and the function of the test objects was OK after the exposure sion in the specified limits sion within the specified limits Power frequency IEC 61000 4 8 2001 No malfunction was observed dur H field immunity Performance criterion A ing the exposure and the function of the test objects as OK after ex posure Voltage dips and IEC 61000 4 11 2001 No malfunction was observed dur interruptions Performance criterion B ing the exposure and the function of the test objects was OK after the exposure During the EMC immunity testing the following generic acceptance criteria for compli ance were in force e Performance Criterion A For continuous phenomena The EUT shall continue to operate as intended during and after the test No degradation of performance or loss of function is allowed as defined in the relevant equipment standard and in the technical specification published by the manufacturer e Performance Criterion B For transient phenomena The EUT shall continue to operate as intended after the tests No degradation of performance or loss of function is allowed as defined in the technical specification published by the manufacturer During the test degradation or loss of function or performance LevelTec Verification Report 17 AgroTech P 7 AgroTech DANETV which is self recoverable is however allowed bu
30. to LevelTec to switch off the alarm function for 1 hour GYLLEOFFO1 The tap is opened to decrease the slurry level in the slurry container Reception of SMS message confirming switching off for 1 hour OK The tap is closed after 0 30 meter slurry is drained off the slurry container LevelTec Verification Report 14 AgroTech P 7 mg A roTech DANETV drained off the slurry container LevelTec has been switched off Result 2 OK no SMS alarm message is sent even though 0 30 meter slurry is drained off the slurry container LevelTec is still switched off 9 42 Reception of SMS message confirming that LevelTec is now switched on again The tap is opened to decrease the slurry level in the slurry container Reception of SMS alarm message Result 3 OK the alarm function of LevelTec has been automatically switched on again after 1 hour SMS alarm messages are now sent when a de crease in slurry level is registered It is concluded that the functions of manual switching off and automatic switching on are working as claimed by the technology supplier 5 2 Performance parameter summary An overview of the evaluated performance parameters is given in table 10 below Table 10 Results from evaluation of performance parameters for LevelTec Parameter Verified value ry level message is received by the person responsible for the tank person in case of slurry tank overflow work as claimed the tank in case of fa
31. velTec used for digested biomass from a biogas plant and for mink slurry Normally the total solids content of such matrices is within the range of 2 0 10 0 The purpose of a technology is defined in terms of what measurable properties that are affected by the technology and how these properties are affected In case of LevelTec the overall purpose is to 1 detect a potential risk for leakage and 2 to report this elec tronically to the slurry storage tank owner or his employee Description principles clear Yee X N Declared performances described Yes x No Innovative technology x vs x In LevelTec Verification Report 27 AgroTech DANETV sec AgroTech Ready to market Yes X Ino Prototype in advanced stage of development Yee X N Remarks out of quick scan to be considered It is relevant for this technology to verify both the basic functionality performance test and the ability of LevelTec to withstand or operate within specified tolerances while be ing exposed to the environmental conditions likely to be encountered during normal use environmental test Verification body Date Name 13 01 2012 Torkild S Birkmose Original signed 10 01 2012 LevelTec Verification Report 28 AgroTech er X DANETV Fran A rolech APPENDIX D Specific verification protocol LevelTec Verification Report 29 AgroTech gt BR AgroTech DANETV The specific verificati
32. x AgroTech DANETV LevelTec Online monitoring of slurry storage tanks Verification report DANETV mk AgroTech Document information Project ETV Test Center and Test Organisation 20 O 2 0 Date 17 12 2012 Status Approved for publication DANETV mk AgroTech TABLE OF CONTENTS TABEE OF OE II 1 INTRODUCTION BE 4 1 1 NET orc OOY senan e e E E E 4 1 2 Name and GOMtaC Ol MODOS o arrien E O 4 1 3 Name of verification body and verification responsible rrrrnnrrnnrrnnrrnnrrnnrnnnrnnnrrnannnnnnnn 4 1 4 Verification organisation including exvperts kst tk kk nene nen nennen nennen 4 1 5 Verification process ERE REE REE REE rr E REEL E SEERE REE R EG 5 1 6 Deviations to the verification protocol 6 2 OVERALL DESCRIPTION OF THE TECHNOLOGY TYPE 6 3 DESCRIPTION OF TECHNOLOGY FOR VERIFICATION 6 3 1 Application and performance parameter definitions rrrrnrrrrarrrrnrevnnrrrarevnnrevnrrnrnnennn 8 3 2 Additional Trendene 9 3 2 1 Environmental test parameters A 9 3 2 2 User NA VALLE kes re dsnkae 10 4 EXISTING DATA vr 10 4 1 Accepted existing data EEE 10 D EVALUATION hhv 10 5 1 Evaluation of performance parameters ccccseccsecceeceseeeeeeeseeeaeeeeee
Download Pdf Manuals
Related Search