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. 901-0245
Fabrikantnummer198807811
FabrikantGeorg Fischer
€ 217,35
Each
Aantal stuks
- Variable Area - - - - - - - - - - - -
RS-stocknr. 901-0078
Fabrikantnummer159001110
FabrikantGeorg Fischer
€ 1.203,71
Each
Aantal stuks
Liquid Magmeter 0.05 m/s 10 m/s 24 V dc 1/2 → 4 in DN15 to DN 100 Socket 10.3bar Polypropylene, Stainless Steel 0 °C +85°C -10°C +70°C 4 → 20 mA
RS-stocknr. 901-0251
Fabrikantnummer198335426
FabrikantGeorg Fischer
€ 342,59
Each
Aantal stuks
Liquid Variable Area 60 l/h 6000 L/h - - DN40 Socket - Plastic - - - - -
RS-stocknr. 901-0249
Fabrikantnummer198807001
FabrikantGeorg Fischer
€ 155,25
Each
Aantal stuks
Liquid Variable Area 50 l/h 50 L/h - - DN10 Socket - Plastic - - - - -
RS-stocknr. 901-0264
Fabrikantnummer198801898
FabrikantGeorg Fischer
€ 359,15
Each
Aantal stuks
Liquid Variable Area 50 l/h 500 L/h - Maximum of 32 mm DN25 Socket - Plastic - - - - -
RS-stocknr. 901-0239
Fabrikantnummer198807008
FabrikantGeorg Fischer
€ 194,58
Each
Aantal stuks
Liquid Variable Area 500 l/h 500 L/h - - DN25 Socket - Plastic - - - - -
RS-stocknr. 901-0236
Fabrikantnummer199335425
FabrikantGeorg Fischer
€ 342,59
Each
Aantal stuks
Liquid Variable Area 300 l/h 3000 L/h - - DN40 Socket - Plastic - - - - -
RS-stocknr. 901-0258
Fabrikantnummer198807005
FabrikantGeorg Fischer
€ 167,67
Each
Aantal stuks
Liquid Variable Area 20 l/h 200 L/h - - DN25 Socket - Plastic - - - - -
RS-stocknr. 901-0071
Fabrikantnummer159001296
FabrikantGeorg Fischer
€ 900,45
Each
Aantal stuks
- Paddlewheel - - - - - - - - - - - -
RS-stocknr. 901-0233
Fabrikantnummer198803329
FabrikantGeorg Fischer
€ 269,10
Each
Aantal stuks
Liquid Variable Area 100 l/h 1000 L/h - Maximum of 32 mm DN25 Socket - Plastic - - - - -
RS-stocknr. 901-0069
Fabrikantnummer198840143
FabrikantGeorg Fischer
€ 601,34
Each
Aantal stuks
Liquid Paddlewheel 0.1 m/s 6 m/s 5 24 V dc 0.5 4.0 in DN15 to DN 100 Socket 12.5bar Polypropylene - - -18°C +85°C <1.5 mA @ 3.3 6 V dc, <20 mA @ 6 24 V dc
RS-stocknr. 901-0255
Fabrikantnummer198801896
FabrikantGeorg Fischer
€ 359,15
Each
Aantal stuks
Liquid Variable Area 15 l/h 150 L/h - Maximum of 32 mm DN25 Socket - Plastic - - - - -
RS-stocknr. 901-0227
Fabrikantnummer198807011
FabrikantGeorg Fischer
€ 251,51
Each
Aantal stuks
Liquid Variable Area 5 l/h 50 L/h - - DN10 Socket - Plastic - - - - -
RS-stocknr. 901-0065
Fabrikantnummer159001733
FabrikantGeorg Fischer
€ 1.081,58
Each
Aantal stuks
- Signet Flow Integral System - - 24 V dc 0.5 → 4 in - - Polypropylene - - - - 4 → 20 mA
RS-stocknr. 901-0223
Fabrikantnummer198803321
FabrikantGeorg Fischer
€ 217,35
Each
Aantal stuks
Liquid Variable Area 5 l/h 50 L/h - Maximum of 16 mm DN10 Socket - Plastic - - - - -