RS PRO Flow Meter 0.6L/min to 10 L/min
RS Stock No. 511-4772
Brand RS Pro
- Category: Flow Sensors
- Connection Type: 3/8 Push On
- Maximum Flow Rate: 10 L/min
AED 331.60
in stock now
RS PRO V10981 Series Flow Meter
RS Stock No. 511-3915
Brand RS Pro
- Category: Flow Sensors
- Current Rating: 10 mA
- Supply Voltage: 4.5 → 24 V dc
AED 2.166.73
in stock now
RS PRO V10980 Series Flow Meter
RS Stock No. 508-2704
Brand RS Pro
- Current Rating: 8 mA
- Maximum Flow Rate: 0.05 → 10 L/min
- Maximum Operating Temperature: +125°C
AED 1.017.44
in stock now
RS PRO 22N-030-V Series Flow Meter
RS Stock No. 511-3909
Brand RS Pro
- Category: Flow Sensors
- Current Rating: 10 mA
- Minimum Operating Temperature: -25°C
AED 2.100.78
in stock now
RS PRO Flow Meter 0.01L/min to 1 L/min, 1/4 in, BSP
RS Stock No. 447-4427
Brand RS Pro
- Device Type: Oval Gear
- Media Monitored: Liquid
- Pipe Diameter Range: 1/4 in
AED 3.728.11
in stock now
RS PRO Flow Meter 0.01L/min to 4 L/min, 1/4 in, BSP
RS Stock No. 447-4449
Brand RS Pro
- Maximum Flow Rate: 4 L/min
- Maximum Pressure: 50bar
- Pipe Diameter Range: 1/4 in
AED 4.159.65
in stock now
RS PRO Flow Meter, 1/2 BSP, 1/4 BSP, BSP
RS Stock No. 511-3959
Brand RS Pro
- Current Rating: 10 mA
- Minimum Operating Temperature: -25°C
- Pipe Diameter Range: 1/4 in
AED 2.184.87
in stock now
RS PRO Flow Meter 0.25L/min to 6.5 L/min, 1/2 BSP, 1/4 BSP, BSP
RS Stock No. 511-3965
Brand RS Pro
- Connection Type: 1/4 BSP
- Maximum Flow Rate: 6.5 L/min
- Minimum Flow Rate: 0.25 L/min
AED 2.184.87
in stock now
RS PRO 1024 Series Flow Meter 0.5L/min to 15 L/min, 1/2 BSP, 1/4 BSP, BSP
RS Stock No. 511-3971
Brand RS Pro
- Device Type: Turbine
- Maximum Operating Temperature: +125°C
- Media Monitored: Liquid
AED 3.237.65
in stock now
Sensirion LG16 Liquid Flow Meter Series Flow Meter
RS Stock No. 173-2224
Brand Sensirion
- Category: Flow Sensors
- Category Link: https://ae.rsdelivers.com/browse/electrical-automation-cables/automation-control-gear/sensors/flow-sensors
- Super Section: Sensors
AED 36.606.44
in stock now
Sensirion LG16 Liquid Flow Meter Series Flow Meter
RS Stock No. 898-6738
Brand Sensirion
- Category: Flow Sensors
- Category Link: https://ae.rsdelivers.com/browse/electrical-automation-cables/automation-control-gear/sensors/flow-sensors
- Product Type: Flow Meter
AED 1.384.83
in stock now
WIKA A2G-25 Series Air Flow Meter Flow Meter for Air
RS Stock No. 262-5498
Brand WIKA
- Device Type: Air flow meter
- Media Monitored: Air
- Series: A2G-25
AED 1.408.98
in stock now
WIKA A2G-25 Series Air Flow Meter Flow Meter for Air
RS Stock No. 262-5501
Brand WIKA
- Category: Flow Sensors
- Device Type: Air flow meter
- Media Monitored: Air
AED 1.661.38
in stock now
SMC PFM711 Series Flow Meter Flow Meter for Fluid, 2L/min Min, 100L/min Max
RS Stock No. 065-5628
Brand SMC
- Category Link: https://ae.rsdelivers.com/browse/electrical-automation-cables/automation-control-gear/sensors/flow-sensors
- Maximum Supply Voltage: 24V dc
- Section: Automation & Control Gear
AED 1.474.37
in stock now
Sensirion SFM3003 Series Bi-Directional Flow Meter Flow Meter for Air, -30L/min Min, 300 L/min Max
RS Stock No. 230-7724
Brand Sensirion
- Maximum Flow Rate: 300 L/min
- Minimum Flow Rate: -30 l/min
- Supply Voltage: 2.7 → 5.5 V
AED 609.61
in stock now
Sensirion SFM3003 Series Bi-Directional Flow Meter Flow Meter for Air, -30L/min Min, 300 L/min Max
RS Stock No. 230-7726
Brand Sensirion
- Category: Flow Sensors
- Device Type: Bidirectional Flow Meter
- Series: SFM3003
AED 708.59
in stock now
Sensirion SFM3003 Series Bi-Directional Flow Meter Flow Meter for Air, -150L/min Min, 300 L/min Max
RS Stock No. 230-7721
Brand Sensirion
- Media Monitored: Air, Gas
- Minimum Flow Rate: -150 l/min
- Series: SFM3003
AED 12.129.31
in stock now
Sensirion SFM3003 Series Bi-Directional Flow Meter Flow Meter for Air, -150L/min Min, 300 L/min Max
RS Stock No. 230-7722
Brand Sensirion
- Maximum Flow Rate: 300 L/min
- Media Monitored: Air, Gas
- Supply Voltage: 2.7 → 5.5 V
AED 695.39
in stock now
Sensirion SFM3003 Series Bi-Directional Flow Meter Flow Meter for Air, -30L/min Min, 300 L/min Max
RS Stock No. 230-7723
Brand Sensirion
- Category: Flow Sensors
- Maximum Flow Rate: 300 L/min
- Supply Voltage: 2.7 → 5.5 V
AED 12.133.80
in stock now
Sensirion SFM3003 Series Bi-Directional Flow Meter Flow Meter for Air, -30L/min Min, 300 L/min Max
RS Stock No. 230-7725
Brand Sensirion
- Device Type: Bidirectional Flow Meter
- Minimum Flow Rate: -30 l/min
- Supply Voltage: 2.7 → 5.5 V
AED 14.113.41
in stock now
Parker SCFTT Series Turbine Flow Meter Flow Meter for Liquid, 15L/min Min, 600 L/min Max Calibrated
RS Stock No. 017-3984
Brand Parker
- Housing Material: Polymer, Aluminium
- Series: SCFTT
- Super Section: Sensors
AED 7.705.69
in stock now
Sensirion, LG16 Liquid Flow Meter Series Connectivity Kit for Use with Liquid Flow Meter, RoHS, REACH, WEEE Standard
RS Stock No. 200-9557
Brand Sensirion
- Product Type: Adapter
- Section: Automation & Control Gear
- Series: LG16 Liquid Flow Meter
AED 338.17
in stock now
Sensirion SFM3200 Series Digital Flow Meter Flow Meter for Air, Oxygen and Other Nonaggressive Gases, 100L/min Min
RS Stock No. 174-9067
Brand Sensirion
- Category: Flow Sensors
- Maximum Media Temperature: +50°C
- Series: SFM3200
AED 803.19
in stock now
ifm electronic SM2001 Series Magnetic Inductive Flow Meter Flow Meter for Water, 80g/h Min
RS Stock No. 059-6612
Brand ifm electronic
- Category: Flow Sensors
- Series: SM2
- Supply Voltage: 18 → 32 V
AED 6.504.00
in stock now
...
What is a flow meter?
How do flow meters work across different technologies?
- Magnetic (electromagnetic) flow meter: Measures flow by generating a magnetic field across a conductive liquid. The moving fluid induces a voltage proportional to velocity, which is converted to volumetric flow rate. Ideal for water and many chemical liquids with good conductivity; not suitable for truly insulating fluids.
- Ultrasonic flow meter: Uses transit-time or Doppler principles. Transit-time meters send ultrasonic pulses upstream and downstream; the difference in arrival times gives velocity and flow. Doppler meters detect frequency shifts caused by particulates or bubbles. Useful for a wide range of fluids, including non-contact measurements and dirty liquids.
- Turbine (mechanical) flow meter: A rotor or turbine spins with the flow; the rotation rate is proportional to flow. Best for clean, low-viscosity liquids and precise, local measurements.
- Coriolis flow meter: Measures mass flow by detecting the deflection of a vibrating tube. Extremely accurate for liquids and gases, independent of density and viscosity, but typically higher in cost and installation complexity.
- Differential pressure (venturi, orifice) flow meter: Uses a pressure drop across a restriction (venturi or orifice plate). Flow rate is inferred from the differential pressure and fluid properties. Widely used, cost-effective for a range of liquids and gases.
What are the main types of flow meters and which fluids are they best for?
- Magnetic flow meters (mag meters): Best for conductive liquids like water, wastewater, slurries, acids. No moving parts, low maintenance, good for dirty liquids; not suitable for non-conductive fluids like pure hydrocarbons.
- Ultrasonic flow meters: Inline or clamp-on for liquids and gases; great for dirty, high-purity, or sterile processes. Ultrasonic meters are versatile for water, chemicals, and HVAC applications.
- Turbine flow meters: Excellent for clean, low-viscosity liquids; high accuracy and fast response but sensitive to particulate matter and viscosity.
- Coriolis flow meters (mass flow): Unmatched for mass flow and density; suitable for chemicals, fuels, and precise custody-transfer applications. Higher cost and installation considerations.
- Differential pressure meters (venturi, orifice): Broad applicability; cost-effective for a wide range of fluids, including gases and liquids; require known fluid properties for accurate calculations.
- Vortex, thermal, and other technologies: Niche applications, including gas flow, viscous liquids, and specialized industrial settings.
How do I choose the right flow meter for water, chemicals, or gases?
- Conductivity of liquids for mag meters; presence of particulates for turbine meters; gas versus liquid considerations for ultrasonic meters. Chemical compatibility and temperature limits matter for all technologies.
- Heavier or more viscous fluids may require magnetic or ultrasonic solutions over turbine meters.
- Inline meters offer compact, high-accuracy measurements; insertion meters can be easier to retrofit into existing piping.
- Food & beverage and pharma require sanitary fittings, cleanability, and clean-in-place (CIP) capabilities.
- Decide between digital displays, 4–20 mA emission, HART, FOUNDATION Fieldbus, or IIoT-enabled meters for remote monitoring.
- Consider maintenance intervals, sensor cleaning needs, and calibration traceability.
Where should a flow meter be installed and what installation considerations matter?
- Install flow meters in straight runs free of turbulence; use upstream and downstream straight piping per manufacturer guidance to minimize flow disturbances.
- Ensure compatible materials for wetted parts; consider temperature and pressure ratings for the process fluid.
- Position instruments for easy access, electrical connection, and maintenance; for inline meters, ensure proper orientation and flow direction.
- For magnetic meters, ensure sufficient liquid conductivity; for ultrasonic meters, ensure accessible mounting for clamp-on versions if used.
- Sanitary installations require clean-in-place (CIP) or sanitary fittings and proper sanitary gaskets to avoid contamination.
- Account for pressure loss and energy impact; select meters with acceptable pressure drop for the system.
How accurate are flow meters and how is calibration performed?
- Use reference standards or calibrated test rigs to establish a baseline.
- Perform dry-run checks with non-flow verification to ensure signals are behaving correctly.
- Apply periodical recalibration or validation against known flow standards; ensure calibration certificates are traceable to national or international standards (e.g., ISO, ASTM).
- Document installation parameters (temperature, pressure, viscosity) during calibration, as some meters have performance curves dependent on these factors.
What maintenance, troubleshooting, and common issues should I know about flow meters?
- Particulate build-up or fouling in turbine or ultrasonic sensors can alter readings; schedule regular cleaning or filter changes.
- Air entrainment, bubbles, or gas pockets may affect ultrasonic/differential pressure meters; verify installation and fluid properties.
- Electrical wiring, grounding, and signal interference can cause noisy data; check cable integrity and shielded connections.
- Low conductivity fluids can disable magnetic meters; choose the correct technology for the fluid and consider bypass options.
- Calibration drift due to temperature, viscosity changes, or aging seals; perform periodic checks and replace worn components as needed.
Can I buy flow meters from RS Components and what should I look for on a listing page?
- Technology type (magnetic flow meter, ultrasonic flow meter, coriolis, turbine, differential pressure)
- Measuring range and accuracy specification, with units (L/min, m3/h, GPM, kg/s for mass flow)
- Fluid compatibility and wetted materials (stainless steel, wetted seals, PTFE, etc.)
- Electrical output (4–20 mA, HART, FOUNDATION Fieldbus, Modbus, digital interfaces) and connector type
- Pressure rating, temperature limits, and sanitary design if applicable
- Installation style (inline vs insertion), process compatibility, and required straight-run lengths
- Calibration information, traceability, and available accessories (bypass, sensors, display modules)