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

...
顯示內容 隱藏內容

篩選條件

正在檢視 1 - 15,共 15 項產品
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庫存編號 901-0236
製造零件編號199335425
HK$2,891.50
單位
Liquid Variable Area 300 l/h 3000 L/h - - DN40 Socket - Plastic - - - - -
RS庫存編號 901-0258
製造零件編號198807005
HK$1,416.25
單位
Liquid Variable Area 20 l/h 200 L/h - - DN25 Socket - Plastic - - - - -
RS庫存編號 901-0223
製造零件編號198803321
HK$1,828.68
單位
Liquid Variable Area 5 l/h 50 L/h - Maximum of 16 mm DN10 Socket - Plastic - - - - -
RS庫存編號 901-0069
製造零件編號198840143
HK$5,122.45
單位
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庫存編號 901-0249
製造零件編號198807001
HK$1,310.27
單位
Liquid Variable Area 50 l/h 50 L/h - - DN10 Socket - Plastic - - - - -
RS庫存編號 901-0071
製造零件編號159001296
HK$7,424.62
單位
- Paddlewheel - - - - - - - - - - - -
RS庫存編號 901-0264
製造零件編號198801898
HK$3,020.25
單位
Liquid Variable Area 50 l/h 500 L/h - Maximum of 32 mm DN25 Socket - Plastic - - - - -
RS庫存編號 901-0251
製造零件編號198335426
HK$2,891.50
單位
Liquid Variable Area 60 l/h 6000 L/h - - DN40 Socket - Plastic - - - - -
RS庫存編號 901-0078
製造零件編號159001110
HK$10,543.53
單位
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庫存編號 901-0065
製造零件編號159001733
HK$5,940.18
單位
- Signet Flow Integral System - - 24 V dc 0.5 → 4 in - - Polypropylene - - - - 4 → 20 mA
RS庫存編號 901-0227
製造零件編號198807011
HK$2,032.80
單位
Liquid Variable Area 5 l/h 50 L/h - - DN10 Socket - Plastic - - - - -
RS庫存編號 901-0239
製造零件編號198807008
HK$1,640.18
單位
Liquid Variable Area 500 l/h 500 L/h - - DN25 Socket - Plastic - - - - -
RS庫存編號 901-0255
製造零件編號198801896
HK$3,020.25
單位
Liquid Variable Area 15 l/h 150 L/h - Maximum of 32 mm DN25 Socket - Plastic - - - - -
RS庫存編號 901-0245
製造零件編號198807811
HK$1,828.68
單位
- Variable Area - - - - - - - - - - - -
RS庫存編號 901-0233
製造零件編號198803329
HK$2,265.14
單位
Liquid Variable Area 100 l/h 1000 L/h - Maximum of 32 mm DN25 Socket - Plastic - - - - -