Rotameter

Rotameter

ROTAMETERs™ (Variable Area Meters) are named after ROTA, one of the European inventors of this flow principle in the beginning of the century. ROTA invented the rotating float, which is self-guiding and has less friction in the pipe so that a more precise measurement is possible. Rota Yokogawa is one of the main suppliers of ROTAMETERs™ in Europe. Globally ROTAMETER™ is available with metering tubes manufactured from either glass, plastic or metal. Our ROTAMETER™ family includes units 6mm to 125mm line sizes, temperatures from -180 to +400ºC, flange ratings to 1500#, ±1.6% accuracy class and turndown's of 10:1. ROTAMETERs™ offer a very low cost, easy to install solution to flow measurement. Once considered as only a water or air flowmeter, ROTAMETER™ is now world proven in applications such as industrial gases, viscous/non conductive chemicals, steam and fuels.

Featured Suppliers

Brooks® variable area flowmeters
Brooks offers a wide range of glass and metal tube variable area flow meters with a choice of application-specific materials and connections, and accuracy of +/- 2% of full scale (standard) or 1% (optional). The Brooks GT1000 (pictured) includes a precision-bore ribbed borosilicate glass metering tube which is removable for cleaning and maintenance. The MT3809 is a rugged metal tube meter perfect for high temperature and pressure applications with optional 4-20 mA and HART programmable transmitter and pulse output for totalization. Many other models.
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Aalborg Instruments & Controls, Inc.
Stainless Industrial Flowmeter
Our model M meters are constructed of stainless steel. Ideal for industrial applications with flow rates up to 116 GPM (water) and 250 SCFM (air).
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Cole-Parmer offer an extensive range of variable area flow meters for both liquid and gas applications. Cole-Parmer’s variable area flow meters are simple to install and offer cost effective solutions for applications requiring visual indication of flow or flow rate. Cole-Parmer offers variable area flow meters for measuring liquids flow from 0.0002 ml/min to over 400 LPM and for gases from 0.02 ml/min to over 700 m3/hour.
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Vögtlin Instruments AG offers high-quality devices and solutions for your flow measurement and control tasks: Reliable & precise mass flow meters & controllers for gases (Accuracy +/- 0,3% of full scale and +/- 0,5% of reading, turndown ratio 1 : 100) – Modular & customizable variable area flowmeters for liquids and gases – High precision needle valves for fine dosages. Profit from our many years of experience as developers, manufacturers and service partners.
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King flowmeters provide exceptional performance in a wide range of industrial, commercial and specialty applications. With 7 new, low cost, full feature product Series for 2003, King offers more styles, sizes, features and options to satisfy all your rotameter requirements.
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Featured Products

Brooks Armored Rotameters (Variable Area)

Brooks Instrument Metal Tube Rotameters are ideal for high pressure and demanding flow applications where safety is a concern. Intrinsically safe or explosion-proof housings available for most models.

Flanged and threaded connection to match your existing system connections
Integral needle valves for process control
Many corrosion resistant materials available for metering caustic fluids
HART and 4-20 mA outputs allow for remote monitoring in hazardous environments.
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Aalborg model F single flow tube all PTFE/PCTFE in line rotameter

chemically inert wetted components
removable protective shield
individually leak tested
vertical in-line
flow ranges from 125 mLPM to 45 LPM water

Made entirely of PTFE, PFA, and PCTFE, the model F flow meter is excellent for high-purity applications or use with corrosive liquids.

Units are available with a standard valve to monitor and control flow or without a valve to just monitor flow.

Flow meters are individually tested on a Mass Spectrometer Leak Detector and certified to a leak integrity rating of 1 X 10-7 sccs Helium or better.
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Cole-parmer : 303 SS Flowmeters for Water

303 SS Flowmeters for Water withstand pressures to 6000 psi. Wetted parts include 303 SS, and a PTFE-coated alnico magnet.
Specifications

Media	water
Flow rate (water) ;	0.05 to 0.5GPM; 0.2 to 1.8 LPM
Accuracy	±2% full-scale
Repeatability	±1.0%
Material (Housing)	304 Stainless Steel
Max operating temperature	240°F (115°C)
Max pressure	6000 psi
Connections	1/4" NPT(F)
Dimensions	1-3/4 W x 4-13/16 H x 1-15/16 D

Vögtlin Instruments : Rotameter

The Q-Flow is a new, modern flowmeter for gases and liquids built on the variable area, tube-and-float principle. Designed in close collaboration with users, it combines our long experience with practical shop-floor requirements

Compact and slender Design
Measuring module: plugged in from the front
mm scale, product scale, user-defined scale
Float: spherical shape affords stability
Seals: FKM as standard, EPDM or PTFE/Chemraz
Valve: close-control, 15-turn microvalve
Valve practically hysteresis-free
Customized versions

King Rotameters

King Introduces a NEW chemical resistant, borosilicate glass tube meter series for liquid service. It features a clear polycarbonate sheild surrounding the glass metering tube.It is assembled in a 304 SS tie rod frame. It offers CPVC and Hastelloy C-276 as optional materials of construction. It is suitable for a wide range of chemical and corrosive applications. O-ring seals allow for easy disassembly and cleaning.

Capacities.50 to 26 GPM — Water
Scale80 mm (3”) , 127 mm (5") Direct reading
Accuracy± 5% of Full Scale Flow
Turndown10:1 to 12.5:1 unless otherwise indicated
Repeatability1/2 %
Max Temperature140 F (60° C)
Max Pressure100 psig
Ambient Temperature33° F to 125° F (1° C to 52° C)