Flow Sensors & Indicators

Flow sensors and flow indicators are flowmeter devices used to measure the amount of liquid, gas or vapour that passes through them. They can also be known as flow gauges or liquid meters. Flow sensors are available as time measuring units, that measure flow rates over a set time period, or they can be totalising flow meters that continually measure the medium passed through.


Flow sensors consist of a primary medium connection device, transducer and transmitter. The transducer senses the fluid that passes through the primary device. The transmitter produces an output signal from the raw transducer signal.


Types of Flow Sensors and Indicators


Paddlewheel Flow Sensors or Turbine: One of the most common types of flow sensor. The sensors are connected to a pipe with liquid passing through and turning a paddle wheel, the primary device calculates the speed as the paddle is turned. This simple structure is compact and can perform large-capacity measurement. Disadvantages are clogging and maintenance is required to cope with the axial wear otherwise the paddle needs replacing.


Rotaflow or Variable Area Flow Sensors: Rotaflow meters are a tapered tube and a float. It is most widely used for gases and liquids flow measurement because of its low cost, simplicity, low pressure drop and linear output.


Magnetic-Inductive Sensors: This type of sensor detects three process categories, volumetric flow quantity, consumed quantity and medium temperature.


Applications for Flow Sensors


Each type of flow sensor has its own specific applications and installation constraints. There is no one size fits all flowmeter. The way to select the right flowmeter is to think about the application as a guide, not the technology. Many of the technologies work well on many applications. Starting with the application, will help to select the technology based on accuracy, cost, durability and reliability, rather than trying to make the technology fit the application you have. Can include the following applications:


  • Water treatment

  • Cooling systems

  • Industrial Washing Systems

  • Irrigation

Things to consider:


  • What is the fluid being measured, if not water what is its viscosity?

  • Rate measurement or totalisation?

  • Display or signal output?

  • What is the minimum and maximum flowrate, process pressure and process temperature?

  • Size of the pipe

...
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Omschrijving Prijs Media Monitored Device Type Minimum Flow Rate Maximum Flow Rate Supply Voltage Pipe Diameter Range Connection Type Maximum Pressure Material Minimum Media Temperature Maximum Media Temperature Minimum Operating Temperature Maximum Operating Temperature Current Rating
RS-stocknr. 198-3007
FabrikantnummerFR2A15BVBN
FabrikantKey Instruments
€ 89,95
Each
Aantal stuks
Gas Variable Area 1 L/min 10 L/min - 1/8 in 1/8 NPT Female 6.89bar Acrylic - +65°C - +65°C -
RS-stocknr. 740-6433
FabrikantnummerSM8000
Fabrikantifm electronic
€ 635,21
Each
Aantal stuks
Liquid Magnetic-Inductive 0.2 L/min 100 L/min 19 → 30 V dc - 1 BSP 16bar PBT, Stainless Steel -20 °C +80°C -10°C +60°C -
RS-stocknr. 907-3959
Fabrikantnummer155420
FabrikantGems Sensors
€ 64,52
Each
Aantal stuks
Fluid, Liquid RotorFlow 0.1 gal/min 5 gal/min - 1/4 in 1/4 NPT Female 6.9bar Polypropylene - +21°C -29°C +82°C -
RS-stocknr. 907-4057
Fabrikantnummer212465
FabrikantGems Sensors
€ 63,04
Each
Aantal stuks
Liquid Turbine 0.1 l/min 2.5 L/min 5 → 24 V dc 1/4 in 1/4 NPT Female 24bar Nylon 12 - - -20°C +100°C -
RS-stocknr. 740-6449
FabrikantnummerSU9000
Fabrikantifm electronic
€ 1.022,60
Each
Aantal stuks
Liquid Ultrasonic 0 L/min 200 L/min 19 → 30 V dc - 1-1/4 BSP 16bar Aluminium Alloy -10 °C +80°C -10°C +60°C -
RS-stocknr. 623-7933
FabrikantnummerAWM720P1
FabrikantHoneywell
€ 153,01
Each
Aantal stuks
Dry Gas Compensated/Amplified - 200 SLPM 15 V dc 22 mm 4-Pin 25psi Plastic - - -25°C +85°C -
RS-stocknr. 448-7467
FabrikantnummerMR3A18BVBN
FabrikantKey Instruments
€ 60,77
Each
Aantal stuks
Gas Variable Area 10 L/min 100 L/min - 1/8 in 1/8 NPT Female 6.9bar Polycarbonate - +65°C - +65°C -
RS-stocknr. 446-8286
Fabrikantnummer173936-C
FabrikantGems Sensors
€ 101,55
Each
Aantal stuks
Liquid Turbine 0.5 L/min 5 L/min 5 → 24 V dc 3/8 in 3/8 BSP 200psi Nylon 12 - - -20°C +100°C -
RS-stocknr. 198-2953
FabrikantnummerMR3L10BVBN
FabrikantKey Instruments
€ 70,50
Each
Aantal stuks
Liquid Variable Area 5 ccm 110 cm³/min - 1/8 in 1/8 NPT Female 6.9bar Polycarbonate - +65°C - +65°C -
RS-stocknr. 198-2903
FabrikantnummerMR3A13BVBN
FabrikantKey Instruments
€ 70,50
Each
Aantal stuks
Gas Variable Area 0.1 L/min 1.2 L/min - 1/8 in 1/8 NPT Female 6.9bar Polycarbonate - +65°C - +65°C -
RS-stocknr. 198-2981
FabrikantnummerFR2A13BVBN
FabrikantKey Instruments
€ 89,52
Each
Aantal stuks
Gas Variable Area 0.1 L/min 1 L/min - 1/8 in 1/8 NPT Female 6.89bar Acrylic - +65°C - +65°C -
RS-stocknr. 511-3971
FabrikantRS PRO
€ 501,22
Each
Aantal stuks
Liquid Turbine 0.5 L/min 15 L/min 4.5 → 24 V dc 1/2 in 1/2 BSP 10bar Stainless Steel - - -25°C +125°C -
RS-stocknr. 198-2997
FabrikantnummerFR2A14BVBN
FabrikantKey Instruments
€ 89,95
Each
Aantal stuks
Gas Variable Area 0.4 L/min 5 L/min - 1/8 in 1/8 NPT Female 6.89bar Acrylic - +65°C - +65°C -
RS-stocknr. 511-3965
FabrikantRS PRO
€ 306,26
Each
Aantal stuks
Liquid Turbine 0.25 L/min 6.5 L/min 4.5 → 24 V dc 1/4 in 1/4 BSP 10bar Stainless Steel - - -25°C +125°C -
RS-stocknr. 198-3029
FabrikantnummerFR2L10BVBN
FabrikantKey Instruments
€ 89,95
Each
Aantal stuks
Liquid Variable Area 10 ccm 100 cm³/min - 1/8 in 1/8 NPT Female 6.89bar Acrylic - +65°C - +65°C -
RS-stocknr. 907-4031
Fabrikantnummer173935-C
FabrikantGems Sensors
€ 86,64
Each
Aantal stuks
Liquid Turbine 1 l/min 25 L/min 5 → 24 V dc 3/8 in 3/8 NPT Male 13.7bar Nylon 12 - - -20°C +100°C 8 mA
RS-stocknr. 821-3897
FabrikantnummerHAFBLF0050CAAX5
FabrikantHoneywell
€ 121,88
Each
Aantal stuks
Dry Gas Amplified 0 sccm 50 sccm 5 V dc Maximum of 5.35 mm Tubing 25psi High Temperature Polymer - - -20°C +70°C -
RS-stocknr. 849-9436
FabrikantnummerPFMV530-1
FabrikantSMC
€ 222,20
Each
Aantal stuks
Dry Air, Gas Suction 0 L/min 3 L/min 12 → 24 V dc 4 mm One-Touch Fitting 500kPa PPS 0 °C +50°C 0°C +50°C -
RS-stocknr. 407-574
FabrikantnummerAWM3100V
FabrikantHoneywell
€ 122,73
Each
Aantal stuks
Dry Gas Amplified -200 sccm 200 cm³/min 15 V dc 0.2 in - 25psi Plastic - - -25°C +85°C -
RS-stocknr. 725-9965
FabrikantnummerUF25B100
FabrikantCynergy3
€ 246,81
Each
Aantal stuks
Liquid Sensor/Switch without Indicator 0.5 L/min 25 L/min 7.5 → 26 V dc 10 mm 3/8 BSP 10bar ABS -10 °C +85°C -10°C +85°C -
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