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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Nombre de résultats par page
Description Prix 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
N° de stock RS 198-2896
Référence fabricantMR3A12BVBN
70,50 €
Each
Unité
Gas Variable Area 0.05 L/min 0.5 L/min - 1/8 in 1/8 NPT Female 6.9bar Polycarbonate - +65°C - +65°C -
N° de stock RS 123-7149
Référence fabricantSFM3000-200C
MarqueSensirion
88,29 €
Each
Unité
Gas Low Pressure Drop -200 slm 200 slm 5 V 22 mm 2-Wire I2C 1.3bar Epoxy, Gold, Polyurethane, PPE+PS Blend, Si, Si3n4, Siox, Stainless Steel (Annealed) -20 °C +80°C -20°C +80°C -
N° de stock RS 395-6883
Référence fabricant156262BSPP
MarqueGems Sensors
173,00 €
Each
Unité
Liquid RotorFlow Electronic 15 L/min 75 L/min 4.5 → 24 V dc 1/2 in 1/2 BSP Female 13.8bar Brass -29 °C +100°C -29°C +100°C -
N° de stock RS 740-6433
Référence fabricantSM8000
659,60 €
Each
Unité
Liquid Magnetic-Inductive 0.2 L/min 100 L/min 19 30 V dc - 1 BSP 16bar PBT, Stainless Steel -20 °C +80°C -10°C +60°C -
N° de stock RS 740-6424
Référence fabricantSM7000
571,70 €
Each
Unité
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 -
N° de stock RS 198-2975
Référence fabricantFR2A12BVBN
82,73 €
Each
Unité
Gas, Liquid Variable Area 0.04 L/min 0.5 L/min - 1/8 in 1/8 NPT Female 7bar Acrylic - +65°C - +65°C -
N° de stock RS 446-8286
Référence fabricant173936-C
MarqueGems Sensors
93,50 €
Each
Unité
Liquid Turbine 0.5 L/min 5 L/min 5 → 24 V dc 3/8 in 3/8 BSP 200psi Nylon 12 - - -20°C +100°C -
N° de stock RS 361-0199
Référence fabricantFR4L69BVBN
220,13 €
Each
Unité
Liquid Variable Area 0.8 L/min 9 L/min - 1/4 in 1/4 NPT Female 6.89bar Acrylic - +65°C - +65°C -
N° de stock RS 198-2981
Référence fabricantFR2A13BVBN
89,95 €
Each
Unité
Gas Variable Area 0.1 L/min 1 L/min - 1/8 in 1/8 NPT Female 6.89bar Acrylic - +65°C - +65°C -
N° de stock RS 395-6861
Référence fabricant155481BSPP
MarqueGems Sensors
126,00 €
Each
Unité
Liquid RotorFlow Electronic 15 L/min 75 L/min 4.5 → 24 V dc 1/2 in 1/2 BSP Female 6.9bar Polypropylene -29 °C +82°C -29°C +82°C -
N° de stock RS 508-2704
MarqueRS PRO
109,56 €
Each
Unité
- - - 0.05 10 L/min 4.5 24 V dc 8 mm - - - - - -25°C +125°C 8 mA
N° de stock RS 257-133
MarqueRS PRO
45,41 €
Each
Unité
Liquid Radial Flow Turbine 1.5 L/min 30 L/min 4.5 16 V dc 15 mm - 20bar Acetal Copolymer - - -40°C +70°C 10 mA
N° de stock RS 511-4772
MarqueRS PRO
47,05 €
Each
Unité
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
N° de stock RS 198-2969
Référence fabricantMR3L11BVBN
70,50 €
Each
Unité
Liquid Variable Area 20 ccm 300 cm³/min - 1/8 in 1/8 NPT Female 6.9bar Polycarbonate - +65°C - +65°C -
N° de stock RS 446-8292
Référence fabricant173037-C
MarqueGems Sensors
93,50 €
Each
Unité
Liquid Turbine 1 L/min 10 L/min 5 → 24 V dc 3/8 in 3/8 BSP 200psi Nylon 12 - - -20°C +100°C -
N° de stock RS 395-6877
Référence fabricant156261BSPP
MarqueGems Sensors
173,00 €
Each
Unité
Liquid RotorFlow Electronic 2 L/min 20 L/min 4.5 → 24 V dc 1/4 in 1/4 BSP Female 13.8bar Brass -29 °C +100°C -29°C +100°C -
N° de stock RS 725-9965
Référence fabricantUF25B100
MarqueCynergy3
246,81 €
Each
Unité
Liquid Sensor/Switch without Indicator 0.5 L/min 25 L/min 7.5 26 V dc 10 mm 3/8 BSP 10bar ABS -10 °C +85°C -10°C +85°C -
N° de stock RS 446-8309
Référence fabricant173939-C
MarqueGems Sensors
93,50 €
Each
Unité
Liquid Turbine 1 L/min 15 L/min 5 → 24 V dc 3/8 in 3/8 BSP 200psi Nylon 12 - - -20°C +100°C -
N° de stock RS 395-9337
Référence fabricant142542BSPP
MarqueGems Sensors
117,70 €
Each
Unité
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 -
N° de stock RS 725-9969
Référence fabricantUF08B100
MarqueCynergy3
246,81 €
Each
Unité
Liquid Sensor/Switch without Indicator 0.4 L/min 8 L/min 7.5 26 V dc 10 mm 3/8 Straight Tube 10bar ABS -10 °C +85°C -10°C +85°C -