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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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 407-574
製造零件編號AWM3100V
BrandHoneywell
TWD3,940.00
單位
Dry Gas Amplified -200 sccm 200 cm³/min 15 V dc 0.2 in - 25psi Plastic - - -25°C +85°C -
RS庫存編號 407-596
製造零件編號AWM3300V
BrandHoneywell
TWD5,487.00
單位
Dry Gas Amplified -1000 sccm 1000 cm³/min 15 V dc 0.2 in - 25psi Plastic - - -25°C +85°C -
RS庫存編號 395-213
製造零件編號AWM5104VN
BrandHoneywell
TWD6,910.00
單位
Dry Gas Amplified 0 sLpm 20 SLPM 15 V dc - 1/4 NPT 50psi Plastic - - 0°C +50°C -
RS庫存編號 623-7933
製造零件編號AWM720P1
BrandHoneywell
TWD7,177.00
單位
Dry Gas Compensated/Amplified - 200 SLPM 15 V dc 22 mm 4-Pin 25psi Plastic - - -25°C +85°C -
RS庫存編號 201-7953
製造零件編號HAFBLF0200CAAX3
BrandHoneywell
TWD3,850.00
單位
Air, Gas Analog 1 l/min 10 L/min 3.3 V dc - - - - - - - - -
RS庫存編號 395-190
製造零件編號AWM5102VN
BrandHoneywell
TWD4,887.00
單位
Dry Gas Amplified 0 sLpm 10 SLPM 15 V dc - 1/4 NPT 50psi Plastic - - 0°C +50°C -
RS庫存編號 201-7960
製造零件編號HAFUHM0200L4AXT
BrandHoneywell
TWD5,318.00
單位
Air, Gas Digital 0 l/min 200 L/min 3 → 10 V dc - - - - - - - - -
RS庫存編號 407-568
製造零件編號AWM2300V
BrandHoneywell
TWD3,687.00
單位
Dry Gas Unamplified -1000 sccm 1000 cm³/min 15 V dc 0.2 in - 25psi Plastic - - -25°C +85°C -
RS庫存編號 201-7955
製造零件編號HAFUHH0020L4AXT
BrandHoneywell
TWD5,076.00
單位
Air, Gas Digital 0 l/min 20 L/min 3 → 10 V dc - - - - - - - - -
RS庫存編號 821-3897
製造零件編號HAFBLF0050CAAX5
BrandHoneywell
TWD3,850.00
單位
Dry Gas Amplified 0 sccm 50 sccm 5 V dc Maximum of 5.35 mm Tubing 25psi High Temperature Polymer - - -20°C +70°C -
RS庫存編號 201-7958
製造零件編號HAFUHM0010L4AXT
BrandHoneywell
TWD5,719.00
單位
Air, Gas Digital 0 l/min 10 L/min 3 → 10 V dc - - - - - - - - -
RS庫存編號 201-7954
製造零件編號HAFBLF0200CAAX5
BrandHoneywell
TWD3,812.00
單位
Air, Gas Analog 1 l/min 10 L/min 5 V dc - - - - - - - - -
RS庫存編號 201-7961
製造零件編號HAFUHM0300L4AXT
BrandHoneywell
TWD5,850.00
單位
Air, Gas Digital 0 l/min 300 L/min 3 → 10 V dc - - - - - - - - -
RS庫存編號 203-6327
製造零件編號AWM92100V
BrandHoneywell
TWD2,514.00
單位
Liquid Mass Air Flow -200 cc/m 200 cc/m 8 → 15 V dc - - - - - - - - -
RS庫存編號 201-7952
製造零件編號HAFBLF0200C4AX3
BrandHoneywell
TWD3,850.00
單位
Air, Gas Digital 1 l/min 10 L/min 3.3 V dc - - - - - - - - -
RS庫存編號 201-7963
製造零件編號HAFUHT0020L4AXT
BrandHoneywell
TWD6,065.00
單位
Air, Gas Digital 0 l/min 20 L/min 3 → 10 V dc - - - - - - - - -
RS庫存編號 201-7956
製造零件編號HAFUHH0100L4AXT
BrandHoneywell
TWD5,319.00
單位
Air, Gas Digital 0 l/min 100 L/min 3 → 10 V dc - - - - - - - - -
RS庫存編號 201-7957
製造零件編號HAFUHH0200L4AXT
BrandHoneywell
TWD5,076.00
單位
Air, Gas Digital 0 l/min 200 L/min 3 → 10 V dc - - - - - - - - -
RS庫存編號 201-7951
製造零件編號HAFBLF0200C2AX5
BrandHoneywell
TWD3,255.00
單位
Air, Gas Digital 1 l/min 10 L/min 5 V dc - - - - - - - - -
RS庫存編號 407-546
製造零件編號AWM2100V
BrandHoneywell
TWD3,687.00
單位
Dry Gas Unamplified -200 sccm 200 cm³/min 15 V dc 0.2 in - 25psi Plastic - - -25°C +85°C -