JJ Thread connections JJ QuickFasten vortex Flow sensors DS_Vortex_Flow_Sensors 06/06 57
Vortex flow sensors Principle of operation Alternate vortices rotating in opposite directions are generated behind a bluff body immersed in a flow. The vortices detach from the edges of the bluff body and form a Kármán vortex street in the fluid stream. The distance between the single vortices is constant. The frequency of the vortices flowing past a sensor depends on the flow rate and is proportional to the flow. The sensor detects these vortices which are then converted to an electrical frequency signal. Some of the advantages of this measuring principle Minimal flow obstruction low pressure drop Wide range of applications in terms of pressure, temperature and density Independent of the conductivity of the medium High long-term stability / no zero drift Frequency signal Vortex street Sensor Bluff body 58
Advantages Solid state flow sensor for liquids with no moving parts no mechanical wear Rugged glass fibre reinforced plastic ensures highest strength and performance Completely encapsulated piezoceramic sensor to detect the vortices thus no direct contact with the medium Wide measuring span (:0) Temperature sensor integrated Output signals: an analogue voltage signal and / or frequency signal is available for the flow, and a resistance or analogue signal is available for the temperature. High interference resistance Wetted parts metal-free 00 % final test with six test points (flow rates) Traceability by serial number Thread connection or QuickFasten 59
Vortex flow sensors Series VVX Encapsulated piezoceramic sensor Type VVX5 Technical data VVX5 VVX0 VVX5 Nominal diameter DN 5 DN 0 DN 5 Process connection G¾-ISO 8 male, incl. O-rings optional G½ QuickFasten G ¼-ISO 8 male, incl. O-rings optional G Inner diameter Ø 3 mm Ø 9 mm Ø 5 mm Flow range...40 l/min 5...80 l/min 7...50 l/min Accuracy Repeatability Medium Pressure rating ± % of range* ±0,5 % or ± %, see temperature ranges ambient Water and aqueous lotion, deviations with high viscous media PN0 Temperature ranges Medium 5...90 C, -0...90 C** Ambient 5...70 C Repeatability ±0,5 %, -0...70 C Repeatability ± % Degree of protection EN 6059 Electrical data 5-pin plug M x IP65*** 5-pin RAST.5 IP0*** Electrical connection 5-pin plug connector M x or 5-pin RAST.5 Power supply 8...30 V DC or 5 V DC (±5 %) Current consumption < 5 ma Approvals Option Recognized component ETL according to UL und CSA Standards Recognized component ETL according to UL und CSA Standards 60
Type VVX5 Type VVX0 Poka Yoke Two different versions available: Frequency output Analogue and frequency output Frequency output VVX5 VVX0 VVX5 Output signal flow Frequency signal, square wave, pulse duty ratio 50:50, signal current max. 0 ma Pulse rate 500 /l (optional 3...000 /l) 00 /l (optional...800 /l) 00 /l (optional...500 /l) Output signal temperature Pt000 wire, class B or NTC 0,74k, B 0/00 3450 or none Analogue output VVX5 VVX0 VVX5 Output signal flow Voltage signal 0,5...3,5 V Scaling...40 l/min 5...80 l/min 7...50 l/min Voltage rate 0.07895 V / l/min 0.04000 V / l/min 0.0098 V / l/min Output signal temperature Voltage signal 0,5...3,5 V corresponds to 0...90 C or Pt000 wire, class B or NTC 0.74k, B 0/00 3450 or none * Test conditions: Test medium water Media temperature 0...30 C Inlet pressure 7...0 bar Defined inlet and outlet pipes (see operating manual) *** With attached cable socket ** Temperature cycle test: -0 C / 70 C, 0 % rh, cycle time.5 h, temperature gradient approx..5 K/min, hold time at -0 C and 70 C 0 min each, 90 cycles: no failures 6
Typical pressure drop VVX5 pressure drop p [mbar] 400 300 00 00 0 0 5 0 5 0 5 30 35 40 flow rate Q [l/min] Typical pressure drop VVX0 pressure drop p [mbar] 400 300 00 00 0 0 0 0 30 40 50 60 70 80 flow rate Q [l/min] Typical pressure drop VVX5 pressure drop p [mbar] 400 300 00 00 0 0 5 50 75 00 5 50 flow rate Q [l/min] 6
VVX5 Mx Alternative electrical connection 3 RAST,5 Schlüsselweite nut size 40 G 3/4 A 80 VVX0 VVX5 3 Mx Poka Yoke 6 B Schlüsselweite nut size 34 34 3 Mx B 43 46 n3,8 n44 G /4 A A A 3,5 00 Maßstab : VVX-034K 5 95 Maßstab : VVX-07K Materials in contact with media Body / tube PPS Fortron 40 % GF Sensor ETFE Tefzel O-rings EPDM 63
Version frequency output Order code Example VVXAS G A RRRP 5 4 Nominal diameter DN 5 DN 0 DN 5 Power supply 8...30 V DC 5 V DC Output signal temperature Pt000 NTC 0.74K none Electrical connection 5 pin plug M x RAST.5 plug VVXAS VVXC9S VVXBS G P A B B RRRP RRRN 0000 5 4 P 6 Version analogue output and frequency output Order code Example VVXASNAU RP 5 4 Nominal diameter DN 5 DN 0 DN 5 Output signal temperature 0.5...3.5 V Pt000 NTC 0.74K none Power supply 8...30 V DC 5 V DC Electrical connection 5 pin plug M x RAST.5 plug VVXASNAU VVXC9SNBUC VVXBSNBU U RP RN 00 5 4 P 6 64
3 5 4 (Verwendungsbereich) (Zul. Abw.) (Oberfläche) Maßstab: (Gewicht) (Werkstoff, Halbzeug) Allgemein ISO 768-m DIN ISO 30 (SIKA-Artikelnummer) Datum Name Bearb...04 Graß Gepr. 8..04 Kuelper Norm Dr. Siebert & Kühn GmbH & Co KG Struthweg 7-9 a Toleranzen geä. 8..4 Kü 3460 Kaufungen Zust Änderung Datum Name (Urspr.:) (Ers. f.:) (Ers. d.:) Blatt Bl. 3 5 4 (Verwendungsbereich) (Zul. Abw.) (Oberfläche) Maßstab: (Gewicht) (Werkstoff, Halbzeug) Allgemein ISO 768-m DIN ISO 30 (SIKA-Artikelnummer) Datum Name Bearb...04 Graß Gepr. 8..04 Kuelper Norm Dr. Siebert & Kühn GmbH & Co KG Struthweg 7-9 a Toleranzen geä. 8..4 Kü 3460 Kaufungen Zust Änderung Datum Name (Urspr.:) (Ers. f.:) (Ers. d.:) Blatt Bl. Accessories Length Order code Connection cable with 5 pin cable socket M x, angle type molded lead 5 x 0.34 mm², sheathing material PVC (T max = 80 C)* Connection cable with 5 pin cable socket M x, molded lead 5 x 0.34 mm², sheathing material PVC, 4 pin Molex MicroBlade wire-to-board housing, (T max = 80 C) PVC-Ribbon cable 5 x AWG4 with RAST.5 duomodul * Connection cable with UL approval on request Accessories VVX5 Screw coupling G½, brass Weitergabe sowie Vervielfältigung dieser Dokumente, Verwertung und Mitteilung ihres Inhalts sind verboten, soweit nicht ausdrücklich gestattet. Zuwiderhandlungen verpflichten zu Schadenersatz. Alle Rechte für den Fall der Patent-, Gebrauchsmuster- oder Geschmacksmustereintragung vorbehalten. SIKA Unternehmensgruppe, Kaufungen, Deutschland. Any unauthorized copying, disclosure or distribution of this document and its contents is strictly forbidden unless specifically authorised. Any violation will lead to indemnity. All rights reserved, particularly in the event of patent grant, registration of a utility model or design patent. SIKA Company Group, Kaufungen, Germany m m 3 m 5 m 0 m XVVX040 XVVX05 XVVX039 XVVX04 XVVX04.5 m XVVX065 m m XVVX03 XVVX0 Order code** BVVX007 Leitungslängen L (mm) Leitungstyp Art.Nr.: 000 PVC- Steuerleitung 4x0,5mm² (AWG4) - 500 PVC-Steuerleitung 4x0,5mm² (AWG4) XVVX065 Anschlussstecker Mx gerade Ausführung VVX-0489 Leitungslängen L (mm) Leitungstyp Art.Nr.: 000 PVC- Steuerleitung 4x0,5mm² (AWG4) - 500 PVC-Steuerleitung 4x0,5mm² (AWG4) XVVX065 Anschlussstecker Mx gerade Ausführung VVX-0489 Soldering coupling Ø 5 mm, brass BVVX008 Accessories VVX0 O-ring for QuickFasten, EPDM Order code** XVVX06 Joint clip QuickFasten, stainless steel XVVX05 Accessories VVX5 Screw coupling R, brass Order code** BVVX003 Soldering coupling Ø 8 mm, brass BVVX004 Bonding coupling Ø 5 mm, PVC BVVX005 Screw coupling G, stainless steel.457 BVVX006 ** Supplied piecewise 65