Flow Sensors

Flow sensors or flow indicators are flow meter 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 (these 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 Sensor

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 a large-capacity measurement. Disadvantages are clogging and maintenance is required to cope with the axial wear otherwise the paddle needs replacing.

Variable Area Flow Sensors also known as Rotaflow meters: identified by their tapered tube and float designs. 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 flow meter. The way to select the right flow meter 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 summation?
  • Display or signal output?
  • What is the minimum and maximum flow rate, process pressure and process temperature?

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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. 744-0913
FabrikantnummerPFM710S-C4-A-W
FabrikantSMC
230,03 €
Each
Aantal stuks
Dry Air, Gas Integrated Display 0.2 L/min 10 L/min 24 V dc 4 mm One-Touch Fitting 750kPa PBT 0 °C +50°C 0°C +50°C -
RS-stocknr. 849-9439
FabrikantnummerPFMV505-1
FabrikantSMC
222,20 €
Each
Aantal stuks
Dry Air, Gas Suction 0 L/min 0.5 L/min 12 → 24 V dc 4 mm One-Touch Fitting 500kPa PPS 0 °C +50°C 0°C +50°C -
RS-stocknr. 744-0701
FabrikantnummerPFM710S-C4-B-W
FabrikantSMC
232,07 €
Each
Aantal stuks
Dry Air, Gas Integrated Display 0.2 L/min 10 L/min 24 V dc 4 mm One-Touch Fitting 750kPa PBT 0 °C +50°C 0°C +50°C -
RS-stocknr. 744-0705
FabrikantnummerPFM725S-C6-A-W
FabrikantSMC
230,03 €
Each
Aantal stuks
Dry Air, Gas Integrated Display 0.5 L/min 25 L/min 24 V dc 6 mm One-Touch Fitting 750kPa PBT 0 °C +50°C 0°C +50°C -
RS-stocknr. 849-9398
FabrikantnummerPFM711-N02L-A-A
FabrikantSMC
274,16 €
Each
Aantal stuks
Dry Air, Gas Integrated Display 2 L/min 100 L/min 24 V dc 1/4 in NPT 1MPa PBT 0 °C +50°C 0°C +50°C -
RS-stocknr. 849-9433
FabrikantnummerPFMV510-1
FabrikantSMC
243,31 €
Each
Aantal stuks
Dry Air, Gas Suction 0 L/min 1 L/min 12 → 24 V dc 4 mm One-Touch Fitting 500kPa PPS 0 °C +50°C 0°C +50°C -
RS-stocknr. 849-9394
FabrikantnummerPFMB7201-C8-A-M
FabrikantSMC
548,65 €
Each
Aantal stuks
Air, Gas Integrated Display 2 L/min 200 L/min 12 → 24 V dc 8 mm One-Touch Fitting 0.7MPa PBT 0 °C +50°C 0°C +50°C -
RS-stocknr. 849-9405
FabrikantnummerPFM711S-N02L-E-M
FabrikantSMC
319,39 €
Each
Aantal stuks
Dry Air, Gas Integrated Display 2 L/min 100 L/min 24 V dc 1/4 in NPT 1MPa PBT 0 °C +50°C 0°C +50°C -
RS-stocknr. 196-4457
FabrikantnummerIFW510-F03-00-Q
FabrikantSMC
162,72 €
Each
Aantal stuks
- Flow Switch 1 L/min 10 L/min - - G 0.6MPa BC6 - - +5°C +60°C -
RS-stocknr. 196-4461
FabrikantnummerPF3W740S-F06-BTN-M
FabrikantSMC
663,63 €
Each
Aantal stuks
- Flow Switch 5 L/min 40 L/min 12 → 24 V dc - G 1MPa PPS, Stainless Steel 0 °C +90°C 0°C +50°C 50 mA
RS-stocknr. 196-4464
FabrikantnummerPFM711S-C6-B
FabrikantSMC
227,77 €
Each
Aantal stuks
- Flow Switch 2 L/min 100 L/min 5 V - One Touch Fitting 750kPa Brass, LCP, PBT 0 °C +50°C 0°C +50°C 55 mA
RS-stocknr. 196-4460
FabrikantnummerPF3W720-F04-ETN-M
FabrikantSMC
584,80 €
Each
Aantal stuks
- Flow Switch 2 L/min 16 L/min 12 → 24 V dc - G 1MPa PPS, Stainless Steel 0 °C +90°C 0°C +50°C 50 mA
RS-stocknr. 196-4462
FabrikantnummerPFM710-F01-F
FabrikantSMC
230,44 €
Each
Aantal stuks
- Flow Switch 0.2 L/min 10 L/min 3.8 V - Rc 750kPa Brass, LCP, PBT 0 °C +50°C 0°C +50°C 55 mA
RS-stocknr. 744-0717
FabrikantnummerPFM750S-C8-A-W
FabrikantSMC
230,03 €
Each
Aantal stuks
Dry Air, Gas Integrated Display 1 L/min 50 L/min 24 V dc 8 mm One-Touch Fitting 750kPa PBT 0 °C +50°C 0°C +50°C -
RS-stocknr. 196-4463
FabrikantnummerPFM711-C6-E
FabrikantSMC
209,36 €
Each
Aantal stuks
- Flow Switch 2 L/min 100 L/min 5 V - One Touch Fitting 750kPa Brass, LCP, PBT 0 °C +50°C 0°C +50°C 55 mA
RS-stocknr. 196-4459
FabrikantnummerPF2D504-11-2
FabrikantSMC
754,85 €
Each
Aantal stuks
- Flow Switch 0.4 L/min 4 L/min 12 → 24 V dc - One Touch Fitting 1MPa PFA 0 °C +90°C 0°C +50°C 20 mA
RS-stocknr. 196-4465
FabrikantnummerPFM750-01L-F
FabrikantSMC
239,32 €
Each
Aantal stuks
- Flow Switch 1 L/min 50 L/min 5 V - Rc 750kPa Brass, LCP, PBT 0 °C +50°C 0°C +50°C 55 mA
RS-stocknr. 744-0714
FabrikantnummerPFM725S-C6-B-W
FabrikantSMC
230,58 €
Each
Aantal stuks
Dry Air, Gas Integrated Display 0.5 L/min 25 L/min 24 V dc 6 mm One-Touch Fitting 750kPa PBT 0 °C +50°C 0°C +50°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. 196-4458
FabrikantnummerPF2A721-F03-27N
FabrikantSMC
474,94 €
Each
Aantal stuks
- Flow Switch 20 L/min 200 L/min 12 → 24 V dc - G 0.75MPa PBT - - 0°C +50°C -