9 Schweizerische Eidgenossenschatt Fotos inst of Marogy METAS Confédération suisse Confederazione Svizzera Confederaziun svizra Swiss Confederation Certificate of calibration The measurements, the uncertainties with confidence probability and calibration methods are given on the following page and are part of the certificate. This certificate shall not be published or reproduced other than in ful Certificate no. 136-34378 Page 1 of 5 Object Acoustic correlation meter Idetitation no, NFSOO04 Interface Measuring range 0..6 m/s Displey Resolution 0,001 Manufecturer NUS We NivuFlow Stick Client Nivus GmbH, 75031 Eppingen, DE Last calibration 16,9.2022, Certificate no, 136-34376 Remarks - Compensation set to CFD Annex to. Annex A Date of issue 16.9.2022 ead of the Laboratory Dr, Marc de Huu This certificate is consistent with Calibration and Measurement Capabilities (CMCs) that are included in Appendix C of the Mutual Recognition Arrangement (MRA) drawn up by the International Committee for Weights and Measures. Under the MRA, all Participating institutes recognize the validity of each other's calibration certificates and measurement reports for the quantities, ranges and measurement uncertainties specified in Appendix C (for details see www. bipm.org. Federal Institute of Metrology METAS Laboratory for Hydrometry Lindenwveg 50 3003 Bern-Wabern, SwitzerlandCertificate no. Fact sheet Calibr. apparatus Measuring conditions Measurement Results 136-34378 Dead time: 0's ‘The dead times the predetermined time needed by thes voocty has beon attained. The values, indicated in red, are measured values befare the dead time was ‘over, Thay are nt used forthe ana. ve (soe last pagel. D = eventually added document (electronical) Water temperature: 17.3 Attachment: Custom made 5 °C Time for a partial measurement: 30 s reference velocity; U Page 2 of § to stabilize itsef aftr the reference Uncertainty of measurement 95% Peston | dae | Sante | tat | vl bat te tm amare | tris) | isoey ts) | Us) | UT 1990 | 165.2002 | 130100 5 | cso | oosoa | ness | ase rss | 1692002 | 130422 5] o1ooie | aoa | acest | 236 sso | e920 | a30r25 5 | e200 2000 | aos | 129 ssa | e900 | 13248 5 | e300 3000 | aos | 08s sea | tea2002 | sate 5 | ostos | asor2 | aaoure | ge 1ss0 | 1692002 | s41943 4 | ooo] azors | ooness | 038 199 | 1692002 | 145807 2 | room | asses | oooees | 027 19s0_ | 1692002 | ans 2 | 100000 ons | aqoses | 039Certificate no. 136-34378 Measurement report Page 3 of § Results with list of values Peatiod | xe | Sante | eat | vrat heated obtained |_inm recs | tvst | ipey tvs) | “Uimvs) | UI) ee 5 | cosoio nso | oooess [as 2 3 ‘ 5 vrais] ooSa1doaswloaesni0—gosa1o —_gosore Disy (ms) SLOSS asc 90 | esa | naw s | c10010 oss | aco | 236 a ‘ 5 welts} 0100109108: 0010 am axon1e Display [msl 100s? omega ce 290 [tesa | nares 5 | szo020 2000 | oooess [129 3 : 5 welts) oz0@0 ozwv29 zone Dis [ms) 200 200 02m Cn 5 [e000 3020 | onus [086 2 3 5 weetis) 000 ostua0 3070 sum Display ms) 303s aa0t 90 | teaaie | eam 5s | os0o0 oso | coow2 | oat 2 3 5 voli) 05060 980049 50010 soot Display ms} 80st 88 ase ee + | o700s0 avons | ooness [036 vets) 0750 o7mnsa eso nn Dispy fms) 0702 wyoe «WTO,Certificate no, 1396-34378 Page 4 of 5 Measurement report Results with list of values [positions ‘ate ‘Start Time No.of vet Object tested obtained | tem asics |__| pty ive) Vim | uts) Ee 7 [1010 | __ 0990s | oanees | _oar 2 verti 1000 Disa ins) 8 son [lesa | anis 2 [toe] tos [oan | o39 venti) Loom 1400 Giga insi 0Certificate no. Precision Measuring method Measurement Uncertainty Traceability Date of calibration For the measurement Address Contact 136-34378 Page 5 of § The measuring instrument is mounted on the tow carriage above the tank and towed through still water at a constant speed (reference velocity, v-ref). The measured values are stored up in the measuring instrument. The stored values are read out and entered into the certificate The reported uncertainty of measurement is stated as the combined standard uncertainty multiplied by a coverage factor k = 2. The measured value (y) and the associated uncertainty (U) represent the interval (y +/- U) which contains the value ‘of the measured quantity with a probability of approximately 95 %. The uncertainty was estimated following the guidelines of the ISO (GUM: 1995), The reported measurement values are traceable to national standards and thus to internationally supported realizations ofthe SI-units. 169.2022 Mare de Huw Federal Institute of Metrology METAS Laboratory for Hydrometry Lindenweg 50 3003 Bern-Wabern, Switzerland Laboratory for Hydrometry: tel. +41 (0)31 921 37 48 e-mail: hydro-kalibrierstelle@metas.ch http://mww.metas.ch Federal Institute of Metrology METAS Laboratory for Hydrometry Lindenwveg 50 3003 Bern-Wabern, SwitzerlandAppendix to Certificate No. 136-34378 Annex A Diagram [—apponaixtoGontcne no 106570 o : Pla “ i : 3 a Description of diagram the graphic shows up that a band ot variability is llustrted to cach measuring point which s determined by the patil measuring. This band of variability represents the whale uncertainty of measuring cause bythe instrument which has tobe calibrated as well as by the fuation and the calibration Laboratay. The so-aled “Eppeclfect” may appear inthe renge of speed from v= 3.0 mis up to 4.5 mis Federal Institute of Metrology METAS Laboratory for Hydrometry Lindenwveg 50 3003 Bern-Wabern, Switzerland