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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Viewing 1 - 15 of 15 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
RS Stock No. 286-298
Mfr. Part No.EF.7731114291
BrandParker
MYR1,535.17
Each
units
Liquid Variable Area 10 L/min 150 L/min 240 V ac 1 in 1 BSP Female 10bar PET - - +5°C +60°C -
RS Stock No. 198-0711
Mfr. Part No.FM.26 322 229
BrandParker
MYR2,442.33
Each
units
Liquid Variable Area 10 L/min 110 L/min - 3/4 in 3/4 BSP - Brass - - - +90°C -
RS Stock No. 256-281
Mfr. Part No.S.800001
BrandParker
MYR431.07
Each
units
Liquid Variable Area 0.2 L/min 2 L/min - 3/4 in 3/4 BSP 10bar - - - - +60°C -
RS Stock No. 441-4879
Mfr. Part No.S.800004
BrandParker
MYR362.36
Each
units
Liquid Variable Area 3 L/min 22 L/min - 3/4 in 3/4 BSP 10bar - - - - +60°C -
RS Stock No. 186-0027
Mfr. Part No.EF.7731113290
BrandParker
MYR953.44
Each
units
Liquid Variable Area 5 L/min 100 L/min - 1 in 1 BSP Female 10bar PET - - +5°C +60°C -
RS Stock No. 256-297
Mfr. Part No.S.800002
BrandParker
MYR512.95
Each
units
Liquid Variable Area 1.5 L/min 10 L/min - 3/4 in 3/4 BSP 10bar - - - - +60°C -
RS Stock No. 198-0698
Mfr. Part No.FM.26 222 229
BrandParker
MYR2,147.47
Each
units
Liquid Variable Area 5 L/min 46 L/min - 1/2 in 1/2 BSP - Brass - - - +90°C -
RS Stock No. 185-9982
Mfr. Part No.S.900001
BrandParker
MYR478.27
Each
units
Liquid Variable Area 1 L/min 25 L/min 5 V dc 3/8 in 3/8 BSP 10bar - - - +5°C +50°C -
RS Stock No. 198-0749
Mfr. Part No.SO.641 122 329
BrandParker
MYR2,729.86
Each
units
- Variable Area 1 L/min 9 L/min 10 → 240 V ac 1/4 in - 350bar - - - -20°C +90°C -
RS Stock No. 198-0660
Mfr. Part No.FM.26 122 129
BrandParker
MYR1,760.24
Each
units
Liquid Variable Area 0.2 L/min 2 L/min - 1/4 in 1/4 BSP - Brass - - - +90°C -
RS Stock No. 286-276
Mfr. Part No.EF77311142220
BrandParker
MYR908.55
Each
units
Liquid Variable Area 10 L/min 150 L/min - 1 in 1 BSP Female 10bar PET - - +5°C +60°C -
RS Stock No. 185-9998
Mfr. Part No.S.800003
BrandParker
MYR395.95
Each
units
Liquid Variable Area 0.07 L/min 0.55 L/min - 1/4 in 1/4 BSP 10bar - - - - +60°C -
RS Stock No. 186-0011
Mfr. Part No.EF.7731112290
BrandParker
MYR858.11
Each
units
Liquid Variable Area 4 L/min 50 L/min - 1 in 1 BSP Female 10bar PET - - +5°C +60°C -
RS Stock No. 286-282
Mfr. Part No.EF.7731111291
BrandParker
MYR1,710.62
Each
units
Liquid Variable Area 2 L/min 30 L/min 240 V ac 1 in 1 BSP Female 10bar PET - - +5°C +60°C -
RS Stock No. 286-260
Mfr. Part No.EF.7731111290
BrandParker
MYR953.56
Each
units
Liquid Variable Area 2 L/min 30 L/min - 1 in 1 BSP Female 10bar PET - - +5°C +60°C -