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Differential pressure flow
Deltatop DN61S

Nozzle (ISA1932) for international standardized differential pressure flowmeter system

  • Deltatop DN61S ©Endress+Hauser
  • Measuring principle differential pressure flowmeter

The Deltatop DN61S is part of the universal differential pressure flowmeter systems with primary elements as Venturi tubes, nozzles, orifice plates and Deltabar dp transmitters. As with Venturi tubes, a wide variety of nozzles are available. These nozzles can be standardized or developed in line with manufacturers specifications. Practically all versions can be provided by Endress+Hauser. A nozzle consists of a convergent section with a rounded profile and a cylindrical throat.


  • Customized or application-specific flowmeter systems based on the dp method for special applications, such as: Low pressure loss, high abrasion resistance, calibrated meter runs, extended nominal diameter range, controlled pressure reduction

  • Optimized for minimum pressure loss, maximum accuracy or maximum turndown

  • Measuring range of the Deltabar differential pressure transmitter adjusted on delivery

  • Application of international standards (e.g. ISO 5167)

  • Robust design and no moving parts

Alkalmazási terület

Flow measurement of gases, steam and liquids.

  • Pipe diameters from DN 50 (2") to DN 500 (20")

  • Medium temperatures from: -200 to +1,000°C (-328 to +1,832°F)

  • Pressure: up to 420bar (6,300psi)

  • Compliant with PED 97/23/EC

  • NACE-compliant materials

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Endress+Hauser Magyarország Folyamatműszerezési Kft.
Forgach u. 9/b 1139 Budapest , Magyarország
Tel.: +36 (1) 412 0421
Fax: +36 (1) 412 0424
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