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

...
Read more Read less

Filters

Viewing 1 - 20 of 175 products
Results per page
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. 446-8315
Mfr. Part No.173940-C
$124.30
Each
units
Liquid Turbine 2 L/min 30 L/min 5 → 24 V dc 3/8 in 3/8 BSP 200psi Nylon 12 - - -20°C +100°C -
RS Stock No. 257-133
BrandRS PRO
$69.45
Each
units
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
RS Stock No. 395-6928
Mfr. Part No.156265BSPP
$364.31
Each
units
Liquid RotorFlow Electronic 2 L/min 20 L/min 24 V dc - 1/4 BSP Female 14bar Brass -29 °C +100°C -29°C +100°C -
RS Stock No. 395-6827
Mfr. Part No.155420BSPP
$123.91
Each
units
Liquid RotorFlow Electronic 2 L/min 20 L/min - 1/4 in 1/4 BSP Female 6.9bar Polypropylene -29 °C +82°C -29°C +82°C -
RS Stock No. 198-0676
Mfr. Part No.FM.26 122 329
BrandParker UCC
$561.66
Each
units
Liquid Variable Area 1 L/min 9 L/min - 1/4 in 1/4 BSP - Brass - - - +90°C -
RS Stock No. 511-4772
BrandRS PRO
$94.38
Each
units
Liquid Beverage 0.6 L/min 10 L/min 4.5 → 24 V dc 43315 in 3/8 Push On 10bar PVDF - - 0°C +125°C 10 mA
RS Stock No. 446-8286
Mfr. Part No.173936-C
$129.13
Each
units
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 -
RS Stock No. 395-6877
Mfr. Part No.156261BSPP
$297.30
Each
units
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 -
RS Stock No. 901-0071
Mfr. Part No.159001296
$1,120.66
Each
units
- Paddlewheel - - - - - - - - - - - -
RS Stock No. 395-6849
Mfr. Part No.142541BSPP
$157.25
Each
units
Liquid RotorFlow 2 L/min 20 L/min - 1/4 in 1/4 BSP Female 13.8bar Brass - - -29°C +100°C -
RS Stock No. 257-149
BrandRS PRO
$90.76
Each
units
Liquid Radial Flow Turbine 0.25 L/min 6.5 L/min 4.5 → 16 V dc 15 mm - 20bar Acetal Copolymer - - -40°C +70°C 10 mA
RS Stock No. 313-5553
Mfr. Part No.426506
BrandBurkert
$2,277.75
Each
units
- - - - 18 → 36 V dc DN 6 → 400 mm - - - - - -10°C +60°C -
RS Stock No. 361-0206
Mfr. Part No.FR4L71BVBN
$459.35
Each
units
Liquid Variable Area 1.5 L/min 20 L/min - 1/4 in 1/4 NPT Female 6.89bar Acrylic - +65°C - +65°C -
RS Stock No. 395-184
Mfr. Part No.AWM5101VN
BrandHoneywell
$423.91
Each
units
Dry Gas Amplified 0 sLpm 5 SLPM 15 V dc - 1/4 NPT 50psi Plastic - - 0°C +50°C -
RS Stock No. 395-6883
Mfr. Part No.156262BSPP
$240.80
Each
units
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 -
RS Stock No. 510-0622
BrandRS PRO
$432.36
Each
units
Gas, Liquid Piston Inline 1 L/min 5 L/min 200 V ac 8 mm 1/4 BSP Female 16bar Aluminium - +100°C - +120°C 1 A
RS Stock No. 446-8309
Mfr. Part No.173939-C
$166.27
Each
units
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 -
RS Stock No. 198-2919
Mfr. Part No.MR3A14BVBN
$173.87
Each
units
Gas Variable Area 0.4 L/min 5 L/min - 1/8 in 1/8 NPT Female 6.9bar Polycarbonate - +65°C - +65°C -
RS Stock No. 407-546
Mfr. Part No.AWM2100V
BrandHoneywell
$124.30
Each
units
Dry Gas Unamplified -200 sccm 200 cm³/min 15 V dc 0.2 in - 25psi Plastic - - -25°C +85°C -
RS Stock No. 198-2903
Mfr. Part No.MR3A13BVBN
$168.79
Each
units
Gas Variable Area 0.1 L/min 1.2 L/min - 1/8 in 1/8 NPT Female 6.9bar Polycarbonate - +65°C - +65°C -
Related Products
The EASIFLOW is a flow measuring device incorporating ...
Description:
The EASIFLOW is a flow measuring device incorporating an AC-DC switch suitable for controlling valves or pump motors or for activating alarm signals. • Oil and water calibrated • Pressures up to 10 bar • Flows from 1 L/min to ...
Multi-sensing of “Pressure + temperature” for preventing a ...
Description:
Multi-sensing of “Pressure + temperature” for preventing a sudden stops or manufacturing defects. Various lineup of replacement adapters to enable easy replacement of your current pressure gauges and flow meters. Analog current output function in addition to the IO-Link communications ...
The Omron E8FC series 4-pole M12, NPN, liquid ...
Description:
The Omron E8FC series 4-pole M12, NPN, liquid media monitored flow sensor is used to measure the flow rate of liquid. This flow sensor includes a primary medium connection device, transducer and transmitter. The transducer detects the fluid that passes ...
Gems™ Sensors popularised the RotorFlow® paddle wheel design ...
Description:
Gems™ Sensors popularised the RotorFlow® paddle wheel design by combining high visibility rotors with solid-state electronics that are packaged into compact, panel mounting housings. They provide accurate flow rate output with integral visual confirmation and an unprecedented price/performance ratio. • ...