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Variable area flow meter with plastic measuring tube

GEMÜ 857

Configure
Transparent pipe flow meter with scale and red markings for flow indication, ideal for industrial liquid measurement.

Flexibly configurable flow meter with stainless steel float

Product information

​The GEMÜ 850 flowmeter operates according to the variable area principle and has a transparent metering tube. The scale printed onto the metering tube is suited to the medium. Dovetail sections moulded onto the metering tube allow for easy mounting of adjustable visual flow indicators, limit switches and a continuous readout transmitter.

Key features

  • Good level of accuracy, simple operation
  • Clear and large size printed scale
  • ATEX version available as an option
  • Over 500 standard scales and 13,000 special scales are available with further scales on request
  • Corrosion-resistant plastic parts
Transparent pipe flow meter with scale and red markings for flow indication, ideal for industrial liquid measurement.

Technical features

Parameters
Value
Connection types
Flange
Spigot
Union end
Measuring range - Liquids
0,05 to 1600 l/h
Error of measurement
± 1% of final value and ± 3% of measured value
Media temperature
-20 to 120 °C
Operating pressure
0 to 15 bar
Nominal sizes
DN 10 to 25
Metering tube materials
PA, transparent
PSU
PVC-U, transparent
PVDF
Float materials
1.4571 (316 Ti)
Conformities
ATEX
FDA

Downloads

15 Results
  • Instruções de operação GEMÜ 800, 850, 801, 805, 806, 807, 811, 815, 816, 817, 820, 822, 825, 830, 831, 832, 835, 851, 855, 857, 861, 865, 867, 870, 875, 880, 885 ptb

    pdf, 1.05 MB, PT

  • Notice d'utilisation GEMÜ 800, 850, 801, 805, 806, 807, 811, 815, 816, 817, 820, 822, 825, 830, 831, 832, 835, 851, 855, 857, 861, 865, 867, 870, 875, 880, 885

    pdf, 1.05 MB, FR

  • Product certificate RoHS - GEMÜ product collection

    pdf, 450 KB, DE/EN

  • Руководство по эксплуатации GEMÜ 800, 850, 801, 805, 806, 807, 811, 815, 816, 817, 820, 822, 825, 830, 831, 832, 835, 851, 855, 857, 861, 865, 867, 870, 875, 880, 885

    pdf, 1.10 MB, RU

  • Instrucciones de uso GEMÜ 800, 850, 801, 805, 806, 807, 811, 815, 816, 817, 820, 822, 825, 830, 831, 832, 835, 851, 855, 857, 861, 865, 867, 870, 875, 880, 885

    pdf, 1.05 MB, ES

  • Instrukcja obsługi GEMÜ 800, 850, 801, 805, 806, 807, 811, 815, 816, 817, 820, 822, 825, 830, 831, 832, 835, 851, 855, 857, 861, 865, 867, 870, 875, 880, 885

    pdf, 1.07 MB, PL

  • Användarhandbok GEMÜ 800, 850, 801, 805, 806, 807, 811, 815, 816, 817, 820, 822, 825, 830, 831, 832, 835, 851, 855, 857, 861, 865, 867, 870, 875, 880, 885

    pdf, 1.06 MB, SV

  • Betriebsanleitung / Operating instructions GEMÜ 800, 850, 801, 805, 806, 807, 811, 815, 816, 817, 820, 822, 825, 830, 831, 832, 835, 851, 855, 857, 861, 865, 867, 870, 875, 880, 885

    pdf, 1.06 MB, DE/EN

  • Datenblatt GEMÜ 850, 851, 855, 857, 861, 865, 867, 870, 875, 880, 885

    pdf, 3.49 MB, DE

  • Manual de exploatare GEMÜ 800, 850, 801, 805, 806, 807, 811, 815, 816, 817, 820, 822, 825, 830, 831, 832, 835, 851, 855, 857, 861, 865, 867, 870, 875, 880, 885

    pdf, 1.06 MB, RO

  • 操作说明 GEMÜ 800, 850, 801, 805, 806, 807, 811, 815, 816, 817, 820, 822, 825, 830, 831, 832, 835, 851, 855, 857, 861, 865, 867, 870, 875, 880, 885

    pdf, 1.22 MB, ZH

  • Návod k obsluze GEMÜ 800, 850, 801, 805, 806, 807, 811, 815, 816, 817, 820, 822, 825, 830, 831, 832, 835, 851, 855, 857, 861, 865, 867, 870, 875, 880, 885

    pdf, 1.08 MB, CS

Suitable services

  • Expert knowledge for your applications

    Training

    Deepen your expertise in valve technology and plant control. Our training courses provide practical content to help you design processes that are safe, efficient, and compliant with standards.

  • Ensure longevity and reliability

    Maintenance

    Regular maintenance ensures consistently stable processes. Our service teams ensure the availability of your systems and reliably extend the service life of your components.

  • Fast, efficient, and precise

    Repair

    When it comes to repairs, every minute counts. Our experts analyze, repair, and test reliably - using original spare parts, technical precision, and a focus on minimizing downtime.

  • Intelligent networking with GEMÜ CONEXO

    Digital support

    CONEXO makes maintenance digital: RFID technology and mobile apps enable the unique identification of your components and document maintenance processes transparently.