Venturi Flowmeter DATASHEET

Transcription

1 Venturi Flometer DTSHEET JUNHO 03

2 IntraVenturi Venturi Tube Tye: Technical Information 0/0 FLOW THE EXPERT IN LEVEL ND FLOW

3 Intra-utomation Technical Information Venturi Tube IntraVenturi Venturi Tube Tye: List of Contents: Chat. Title Page. General Descrition 3. Secifications 3 3. Draings 4 4. Intra-utomation Design Standards 4 5. Tetragon Duct and Taless tye Venturi 5 6. Equations 6 7. Secification Questionnaire for Venturi Tubes 7 8. Ordering Codes 8 - -

4 Venturi Tube Technical Information Intra-utomation. General Descrition Comaring ith orifices and flo nozzles, the Venturi tube generally is of a little more comlicated structure, requires more material and costs and tends to be larger in size. Hoever, Venturi tubes offer advantages including an extremely lo ressure loss, a higher durability and a loer chance of catching a sludge media and sediment than other throttle elements. The Venturi tube is mostly used for measurements of flo herever a minimal loss of ressure is imortant. The Intra-utomation Venturi Tube is designed and manufactured in full comliance ith ISO- 567 and SME MFC-3M standards. Secifications Venturi tube tye: End connection: -ratio-range: throat calculation codes: Otions-: Otions-: machined tye elded tye tetragon duct tye butt-eld flanged (sli-on & elding neck) machined tye: beteen 0,4 and 0,75 incl. elded tye: beteen 0,4 and 0,7 incl. ISO-567 SME MFC-3M L.K.SPINK. G NO.3. Pressure taings leading into iezometer ring Full Jacket or Semi Jacket for Heating or Cooling - 3 -

5 Intra-utomation Technical Information Venturi Tube 3. Draings Generally, Venturi tube ith a machined convergent can be used in ies of size beteen and 0. Hoever, in the case that the machined tye is of large size (8 or 0 ), they have disadvantages because of required higher costs due to huge material consume. Machined Tye: Flanged End Construction ith jacket (model: SVT-J) Welded Tye: Flanged End 4. Intra-utomation Design Standards Welded Tye: Butt Welds End Conical Convergent ngle: ± Conical Divergent ngle: 4 ± End connection: Taing adators: Taing Nos: butt-elds flanged connection is available on request as elding-neck or sli-on-tye ½ NPT Others are available on request (i.e. ½ SW, ¾ NPT or SW, etc) (one) ustream ressure taing and (one) donstream ressure Taing There may be used ith several sets of ressure taings on request

6 Venturi Tube Technical Information Intra-utomation 5. Tetragon Duct and Taless tye Venturi Tetragon Duct The tetragon is designed and manufactured in order to fit into tetragon duct tye iing and the throat have the same area ith its throat diameter calculated by ISO-567, SME MFC-3M or L.K.SPINK.- standards. Taless The taless Venturi tube, hich has no need of ressure taings for differential ressure measurement, can be effectively used (ith less ressure dro) for flo measurem. of a slurry fluid, a fluid ith susensions, or a corrosive fluid. It can alsoj measure a liquid hich solidifies at lo temeratures, or a liquid hich vaorizes at high temeratures. max. temerature: C ressure rating: u to JIS 0K RF u to NSI 300 lb - 5 -

7 Intra-utomation Technical Information Venturi Tube Equations Equations describing the Venturi-rincile: From the Bernoulli-Equation: gz gz ith h z z concludes into gh based on mass conservation: the folloing is additionally valid: gh gh So the mass flo in a Venturi ie is as follos: gh m

8 Venturi Tube Technical Information Intra-utomation International Headquarters: Sales Office for the BENELUX: Intra-utomation GmbH B.V. Intra-utomation HTP Otto-Hahn-Str. 0 PO Box Grevenbroich 4730 Oudenbosch GERMNY THE NETHERLNDS +49 (0) 8 / (0) (0) 8 / (0) info@intra-automation.de info@intra-automation.nl.intra-automation.com - -

9 Contactos/Contacts: Comercial/Commercial: Fernando Mena Costa Tel: (+35) Fax: (+35) ssistência/service: Patricia Costa Tel: (+35)