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. 446-8315
Fabrikantnummer173940-C
FabrikantGems Sensors
€ 63,62
Each
Aantal stuks
Liquid Turbine 2 L/min 30 L/min 5 → 24 V dc 3/8 in 3/8 BSP 200psi Nylon 12 - - -20°C +100°C -
RS-stocknr. 511-4772
FabrikantRS PRO
€ 45,68
Each
Aantal stuks
Liquid Flow Meter 0.6 L/min 10 L/min 4.5 → 24 V dc 3/8 in 3/8 Push On 10bar PVDF - - 0°C +125°C 10 mA
RS-stocknr. 395-6827
Fabrikantnummer155420BSPP
FabrikantGems Sensors
€ 69,80
Each
Aantal stuks
Liquid RotorFlow 2 L/min 20 L/min - 1/4 in 1/4 BSP Female 6.9bar Polypropylene -29 °C +82°C -29°C +82°C -
RS-stocknr. 198-2919
FabrikantnummerMR3A14BVBN
FabrikantKey Instruments
€ 70,50
Each
Aantal stuks
Gas Variable Area 0.4 L/min 5 L/min - 1/8 in 1/8 NPT Female 6.9bar Polycarbonate - +65°C - +65°C -
RS-stocknr. 257-149
FabrikantRS PRO
€ 44,09
Each
Aantal stuks
Liquid Radial Flow Turbine 0.25 L/min 6.5 L/min 4.5 → 16 V dc 15 mm - 20bar Acetal Copolymer - - -40°C +70°C 10 mA
RS-stocknr. 198-2931
FabrikantnummerMR3A15BVBN
FabrikantKey Instruments
€ 70,50
Each
Aantal stuks
Gas Variable Area 1 L/min 10 L/min - 1/8 in 1/8 NPT Female 6.9bar Polycarbonate - +65°C - +65°C -
RS-stocknr. 740-6424
FabrikantnummerSM7000
Fabrikantifm electronic
€ 588,80
Each
Aantal stuks
Liquid Magnetic-Inductive 0.2 L/min 50 L/min 19 → 30 V dc - 3/4 BSP 16bar PBT, Stainless Steel -20 °C +80°C -10°C +60°C -
RS-stocknr. 256-297
FabrikantnummerS.800002
FabrikantParker
€ 74,07
Each
Aantal stuks
Liquid Variable Area 1.5 L/min 10 L/min - 3/4 in 3/4 BSP 10bar - - - - +60°C -
RS-stocknr. 186-0027
FabrikantnummerEF.7731113290
FabrikantParker
€ 126,71
Each
Aantal stuks
Liquid Variable Area 5 L/min 100 L/min - 1 in 1 BSP Female 10bar PET - - +5°C +60°C -
RS-stocknr. 448-7445
FabrikantnummerMR3A16BVBN
FabrikantKey Instruments
€ 61,07
Each
Aantal stuks
Gas Variable Area 2 L/min 30 L/min - 1/8 in 1/8 NPT Female 6.9bar Polycarbonate - +65°C - +65°C -
RS-stocknr. 256-281
FabrikantnummerS.800001
FabrikantParker
€ 74,07
Each
Aantal stuks
Liquid Variable Area 0.2 L/min 2 L/min - 3/4 in 3/4 BSP 10bar - - - - +60°C -
RS-stocknr. 906-7765
FabrikantnummerVFA-3
€ 39,22
Each
Aantal stuks
Air Variable Area 0.6 SCFH 5 SCFH - 1/8 in 1/8 NPT Female 6.9 (With Valve) bar, 10 (Without Valve) bar Acrylic Plastic - +38 (Without Valve) °C, +48 (With Valve) °C - - -
RS-stocknr. 623-7927
FabrikantnummerAWM43300V
FabrikantHoneywell
€ 131,26
Each
Aantal stuks
Dry Gas Amplified - 1000 cm³/s 15 V dc 0.246 in - 150psi Plastic - - -25°C +85°C -
RS-stocknr. 395-6833
Fabrikantnummer155480BSPP
FabrikantGems Sensors
€ 69,80
Each
Aantal stuks
Liquid RotorFlow 15 L/min 75 L/min - 1/2 in 1/2 BSP Female 6.9bar Polypropylene -29 °C +82°C -29°C +82°C -
RS-stocknr. 448-7451
FabrikantnummerMR3A17BLBN
FabrikantKey Instruments
€ 61,07
Each
Aantal stuks
Gas Variable Area 4 L/min 50 L/min - 1/8 in 1/8 NPT Female 6.9bar Polycarbonate - +65°C - +65°C -
RS-stocknr. 395-6849
Fabrikantnummer142541BSPP
FabrikantGems Sensors
€ 117,70
Each
Aantal stuks
Liquid RotorFlow 2 L/min 20 L/min - 1/4 in 1/4 BSP Female 13.8bar Brass - - -29°C +100°C -
RS-stocknr. 395-9337
Fabrikantnummer142542BSPP
FabrikantGems Sensors
€ 117,70
Each
Aantal stuks
Liquid RotorFlow 15 L/min 75 L/min - 1/2 in 1/2 BSP Female 13.8bar Brass -29 °C +100°C -29°C +100°C -
RS-stocknr. 907-3773
Fabrikantnummer26941
FabrikantGems Sensors
€ 275,29
Each
Aantal stuks
Gas, Liquid Piston - 0.045 gal/min - 1/4 in 1/4 NPT Female 69bar Brass - - -29°C +148.9°C -
RS-stocknr. 407-596
FabrikantnummerAWM3300V
FabrikantHoneywell
€ 97,51
Each
Aantal stuks
Dry Gas Amplified -1000 sccm 1000 cm³/min 15 V dc 0.2 in - 25psi Plastic - - -25°C +85°C -
RS-stocknr. 616-2693
Fabrikantnummer212460E
FabrikantGems Sensors
€ 75,00
Each
Aantal stuks
Liquid Turbine 0.026 gal/min 0.65 gal/min 5 → 24 V dc 1/4 in 1/4 BSP Male 24bar Nylon 12 - - -20°C +100°C -
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