Menu Close

Pitot Tube flow meters are ideally suited to moist, dirty and high velocity compressed air and inert gas systems that contain some level of contamination. Measure flow, consumption, pressure and temperature. Note: Pitot tube flow meters must not be installed on compressor outlets. They must have a filter or water separator between the compressor and flow meter. If you need to install a flow meter on the compressor outlet, we recommend the Vortex Flow Meter.

Standard Features

  • Flow Range: 5 – 300 Nm/s (17 to 984 ft/s)
    • Note: below minimum velocity flow (5Nm/s or 17 ft/s), the meter read will be zero.
  • Gas Pressure Range: up to 17 bar (247 psi)
  • Pipe Sizes: DN25 to DN600
  • Accuracy: ±1.5% reading, ±0.3% full scale
  • Display: 2.8″ ultra-wide viewing angle LCD touch screen
  • Data Logging: up to 10,000,000 recording points
  • Output: Modbus (RS485) and 4-20mA
  • Power Requirement:
    • During start up: 18 to 30V DC ⁄ 24W@24V
    • Normal operation: 18 to 30VDC / 6.5W@24VDC

Options

  • Bi-directional or one way flow
  • Shaft length: 250 mm (9.8″) or 400 mm (15.7″)
  • 5 meter data cable
  • Gas Types: Air, Argon, Carbon Dioxide, Helium, Hydrogen, Nitrogen, Nitrous Oxide, Oxygen

Applications

  • Compressed air and gas systems
  • Manufacturing, industrial and pharmaceutical use
  • Temporary or permanent installation
  • Non-explosive environments

Pitot tube flow meters are ideally suited to wet, dirty and high velocity compressed air and gas systems that contain some level of contamination. This makes a pitot tube flow meter ideal for measuring flow, temperature and pressure near the outlet of compressors and other difficult environments.

Pitot tube flow meters have no moving parts, a low pressure drop and are vibration proof. The integrated pressure and temperature sensors give real-time monitoring of fluid pressure and temperature. The sensor has an extremely sensitive differential pressure measurement that allows pitot tube flow meters to be used over a wide flow range, whilst the patented anti-condensation technology ensures the sensor can be used under 100% saturated conditions. The flow meter can be easily installed under pressure through a 1/2″ ball valve.

Innovative online auto-calibration technology compensates for temperature and pressure changes, enabling the pitot tube flow meter to perform stable accurate measurements for years to come.

Important

  • You need to maintain a minimum flow velocity of 5 Nm/s (17 ft/s) for the pitot tube to work correctly. Below this minimum velocity, the flow meter reading will be zero.
  • Flow meters must be installed away from bends, edges, seams, changes in pipe size and other obstructions
  • Incorrect wiring or installation can give false readings, damage the sensor and void the warranty. If you aren’t sure how to install or wire the sensor, please contact us. Full installation and wiring instructions are available in the User Manual.

Pitot Tube Flow Meter Pack

  • Pitot Tube Flow Meter
  • M12 connector (data cable optional)
  • Calibration certificate
  • User Manual
  • 12 month warranty

Pitot Tube Flow Meter Options

  • Two shaft length options: 250 mm (9.8″) or 400 mm (15.7″)
  • Multiple gas options: Air, Argon, Carbon Dioxide, Helium, Hydrogen, Natural Gas, Nitrogen, Nitrous Oxide and Oxygen

Warranty & Calibration

12 month warranty

Calibration is recommended every 2 years (provided the sensor is not exposed to relative humidity above 85%).
Annual calibration is required if the sensor is exposed to relative humidity above 85%.

Accessories

Accessories such as mechanical and electrical fittings are available on the Accessories page.

Other Information

Part Numbers: FLP100001, FLP200001, FLP110001, FLP210001, FLP110011, FLP210011,FLP110021, FLP210021

 

Features

  • Style: Insertion type sensor (BSP thread)
  • Technology: Pitot Tube (Volumetric)
  • IP Rating: IP65
  • Gas Quality: moist or dirty compressed air and inert gases
    • Do not use on compressor outlets. Must have a filter or water separator between the compressor and flow meter
  • Pipe Sizes:  DN25 – DN600 provided minimum velocity is maintained
  • Minimum Flow Velocity: 5 Nm/s
    • Note: below minimum velocity flow, the meter read will be zero.
  • Flow range of 5 – 300 Nm/s (17 to 984 ft/s)
  • Gas Pressure: up to 17 bar (247 psi)
  • Gas Temperature: -40 to +150°C (-40 to +302°F)
  • Accuracy: +/-1.5% reading, +/-0.3% full scale
  • Power Requirement:
    • During start up: 18 to 30V DC ⁄ 24W@24V
    • Normal operation: 18 to 30VDC / 6.5W@24VDC
  • Outputs: Modbus RTU and 4 to 20 mA + Pulse outputs
  • Display: 2.8″ ultra-wide viewing angle LCD touch screen
  • Data Logging: up to 10,000,000 recording points
  • Bi-directional: Optional
  • Measure: Flow, Consumption, Pressure, Temperature
  • Other Features:
    • Integrated pressure and temperature sensors for real-time monitoring of fluid pressure and temperature
    • Easy to insert and remove through 1/2″ valve, even when under pressure
    • Low pressure drop
    • No moving parts, low pressure drop
    • Full electrical isolation to filter out disturbances
    • Stable signals
    • Extremely sensitive differential pressure sensor
    • Innovative online auto-calibration function to compensate the temperature and pressure change
    • Patented anti condensation technology
    • Anti-particulate pollution, oil vapour and most chemicals
  • Applications:
    • Compressed air and gas systems
    • Manufacturing, industrial and pharmaceutical use
    • Temporary or permanent installation
    • Indoor use
  • Warranty: 12 months

Downloads

User Manual

Product Flyer – Specifications and Order Codes

Order Codes (SKU)

Use the diagram below to select the features of your flow meter.

In the example below: FLP110001 is a flow meter with a 250mm shaft. It comes with 2 x data cables. It can be used in systems where gas is flowing from left to right. It is configured for air.

FLP Order Codes

Weight 2.5 kg
Dimensions 69.5 × 21 × 17 mm
Gas Types

Air, Argon, Carbon Dioxide, Helium, Hydrogen, Natural Gas, Nitrogen, Nitrous Oxide, Oxygen

Flow Direction

Left to Right → → →, Right to Left ← ← ←, Bi-directional

Shaft Length

250mm (9.8"), 400mm (15.7")

Data Cable

No, Yes

HS Code

9026.80.80 (Flow Meters)

Content missing