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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Viewing 1 - 13 of 13 products
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Description Price 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
New
RS Stock No. 213-3261
Mfr. Part No.FTS-I060F14A
BrandSick
TWD11,915.00
Each
units
Liquid Flow Switch 3 cm/s 300 cm/s 18 → 30 V dc 25 mm Compression 100bar Stainless Steel/Plastic -40 °C +150°C -40°C +70°C 100 mA
New
RS Stock No. 213-3259
Mfr. Part No.FFUS20-1G1IO
BrandSick
TWD28,654.00
Each
units
- Flow Meter 3.5 l/min 60 L/min 18 → 30 V dc 20 mm G1 Male 10bar PPSU 0 °C +80°C 0°C +60°C 100 mA
RS Stock No. 183-7327
Mfr. Part No.FTS-I200F14A
BrandSick
TWD16,400.00
Each
units
- Flow Sensor - - - - - 100bar - - - -40°C +70°C 100 mA
New
RS Stock No. 210-1286
Mfr. Part No.FTMG-ESD20AXO
BrandSick
TWD35,087.00
Each
units
Air, Argon, Carbon Dioxide, Helium, Nitrogen Gas 9.4 l/min 2824 L/min Power Over Ethernet - - - - - - - - -
New
RS Stock No. 210-1285
Mfr. Part No.FTMG-ESD15AXO
BrandSick
TWD34,647.00
Each
units
Air, Argon, Carbon Dioxide, Helium, Nitrogen Gas 5.3 l/min 1590 L/min Power Over Ethernet - - - - - - - - -
New
RS Stock No. 213-3260
Mfr. Part No.FFUS25-1G1IO
BrandSick
TWD29,703.00
Each
units
- Flow Meter 5 l/min 240 L/min 18 → 30 V dc 25 mm G1 1/4 Male 10bar PPSU 0 °C +80°C 0°C +60°C 100 mA
New
RS Stock No. 210-1291
Mfr. Part No.FTMG-ISD25AXO
BrandSick
TWD30,471.00
Each
units
Air, Argon, Carbon Dioxide, Helium, Nitrogen Gas 14.7 l/min 4417 L/min 30 V dc - - - - - - - - -
New
RS Stock No. 210-1287
Mfr. Part No.FTMG-ESD25AXO
BrandSick
TWD36,099.00
Each
units
Air, Argon, Carbon Dioxide, Helium, Nitrogen Gas 14.7 l/min 4417 L/min Power Over Ethernet - - - - - - - - -
New
RS Stock No. 213-3258
Mfr. Part No.FFUS15-1G1IO
BrandSick
TWD26,514.00
Each
units
- Flow Meter 0.9 l/min 36 L/min 18 → 30 V dc 15 mm G3/4 Male 16bar PPSU 0 °C +80°C 0°C +60°C 100 mA
New
RS Stock No. 210-1289
Mfr. Part No.FTMG-ISD20AXO
BrandSick
TWD29,547.00
Each
units
Air, Argon, Carbon Dioxide, Helium, Nitrogen Gas 9.4 l/min 2824 L/min 30 V dc - - - - - - - - -
RS Stock No. 183-7326
Mfr. Part No.FTS-I100F14A
BrandSick
TWD16,400.00
Each
units
- Flow Sensor - - - - - 100bar - - - -40°C +70°C 100 mA
New
RS Stock No. 213-3257
Mfr. Part No.FFUS10-1G1IO
BrandSick
TWD25,382.00
Each
units
- Flow Meter 0.3 l/min 21 L/min 18 → 30 V dc 10 mm G1/2 Male 16bar PPSU 0 °C +80°C 0°C +60°C 100 mA
New
RS Stock No. 210-1288
Mfr. Part No.FTMG-ISD15AXO
BrandSick
TWD29,107.00
Each
units
Air, Argon, Carbon Dioxide, Helium, Nitrogen Gas 5.3 l/min 1590 L/min 30 V dc - - - - - - - - -