Flow Sensors

Flow sensors or flow indicators are flow meter 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 (these 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 Sensor

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 a large-capacity measurement. Disadvantages are clogging and maintenance is required to cope with the axial wear otherwise the paddle needs replacing.

Variable Area Flow Sensors also known as Rotaflow meters: identified by their tapered tube and float designs. 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 flow meter. The way to select the right flow meter 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 summation?
  • Display or signal output?
  • What is the minimum and maximum flow rate, process pressure and process temperature?

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รายละเอียดสินค้า / Description ราคา / 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. 804-3901
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.7MF4433-1HA22-2RB1
Brand :Siemens
THB107,226.77
Each
Units
Gas, Liquid, Vapour Digital Pressure Transmitter - - 9 → 24 V - 1/4 NPT 30bar Aluminium -40 °C +85°C -40°C +85°C -
RS Stock No. 186-0011
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.EF.7731112290
Brand :Parker
THB8,003.26
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. 780-0113
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LFS-02
Brand :Cynergy3
THB8,767.11
Each
Units
- Paddle 15.2 L/min, 19 L/min 60.6 L/min, 83.3 L/min 230 V 1 → 3 in 3/4 BSP 20bar Aluminium Alloy - - -30°C +150°C 1 A
RS Stock No. 256-562
THB1,722.77
Each
Units
Liquid Control Valve 3 L/min 6 L/min 240 V ac 15 mm - 8bar - +5 °C +85°C +5°C +70°C -
RS Stock No. 616-3494
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.197093
Brand :Gems Sensors
THB1,451.54
Each
Units
Liquid Piston - 1 gal/min 200 V 1/4 in 1/4 Quick Disconnect Male 8.6bar Glass Reinforced PP -18 °C +100°C -18°C +100°C -
RS Stock No. 122-8444
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.51594
Brand :Gems Sensors
THB8,648.68
Each
Units
Liquid Piston - 0.75 gal/min - 1/4 in 1/4 NPT Female 69bar Brass - - -29°C +148.9°C -
RS Stock No. 907-4044
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.180395
Brand :Gems Sensors
THB11,130.86
Each
Units
Liquid RotorFlow Electronic 5 gal/min 300 gal/min 24 V dc 3/4 in 3/4 NPT Female 13.8bar Brass - +21°C -29°C +100°C 20 mA @ 24 V dc (No Load), 35 mA @ 24 V dc (Load)
RS Stock No. 125-0660
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SPI-N118-1421-1-3-001
Brand :Simex
THB8,848.03
Each
Units
Gas, Liquid Flow Counter - - 24 V dc - M12 - ABS, Fibreglass - - 0°C +50°C 100 mA
RS Stock No. 613-4222
Brand :RS PRO
THB6,886.25
Each
Units
Gas, Liquid Paddle 7.5 L/min 10 L/min 250 V ac 20 mm 3/4 BSP Female 25bar Nickel Plated Brass - +110°C - +110°C 5 A
RS Stock No. 907-3969
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.155481
Brand :Gems Sensors
THB4,991.52
Each
Units
Liquid RotorFlow Electronic 1.5 gal/min 20 gal/min 4.5 → 24 V dc 1/2 in 1/2 NPT Female 6.9bar Ploypropylene - +21°C -29°C +82°C 8 mA
RS Stock No. 395-6962
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.166702
Brand :Gems Sensors
THB1,485.35
Each
Units
Liquid Piston - 1 L/min 120 → 240 V ac/dc 1/4 in 1/4 BSP 10bar Noryl - +100°C - +100°C -
RS Stock No. 205-1294
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.14272389
Brand :WIKA
THB17,002.50
Each
Units
Liquid Electronic Flow Switch 5 cm/s 300 cm/s 15 → 35 V - - - - - - - - -
RS Stock No. 446-8309
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.173939-C
Brand :Gems Sensors
THB2,908.66
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. 196-4457
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IFW510-F03-00-Q
Brand :SMC
THB6,783.66
Each
Units
- Flow Switch 1 L/min 10 L/min - - G 0.6MPa BC6 - - +5°C +60°C -
ใหม่ / New
RS Stock No. 217-3745
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.FS2012-1100-NG
THB2,696.804
Each (In a Tray of 10)
Units
- - - - - - - - - - - - - -
RS Stock No. 201-2075
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SFM3019
Brand :Sensirion
THB3,576.93
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 201-7951
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.HAFBLF0200C2AX5
Brand :Honeywell
THB3,543.92
Each
Units
Air, Gas Digital 1 l/min 10 L/min 5 V dc - - - - - - - - -
RS Stock No. 196-4458
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.PF2A721-F03-27N
Brand :SMC
THB19,799.82
Each
Units
- Flow Switch 20 L/min 200 L/min 12 → 24 V dc - G 0.75MPa PBT - - 0°C +50°C -
ใหม่ / New
RS Stock No. 210-0717
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.PF20H-11.010.C043.20.1.0000.0
Brand :Baumer
THB20,874.75
Each
Units
Liquid FlexFlow Hygienic Flow & Temperature Measurement Sensor 10 cm/s 400 cm/s 30 V dc - 1 1/2" Tri-Clamp - - - - - - -
RS Stock No. 198-2931
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MR3A15BVBN
THB3,245.36
Each
Units
Gas Variable Area 1 L/min 10 L/min - 1/8 in 1/8 NPT Female 6.9bar Polycarbonate - +65°C - +65°C -