Ultrasonic compressed air flowmeter

Thanks to its innovative technology, the compressed air flowmeter can monitor air consumption, identify leaks and adjust compressor parameters to optimize energy efficiency.


The FWD ultrasonic air flow meter measures flow rate of air

FWD-A ultrasonic flowmeter measures compressed air flow rate

This mass flow meter for compressed air marks a real technological breakthrough in air flow measurement. It allows to highlight your compressed air consumption. Its objective is to make important energy savings by identifying the consuming networks and the compressed air leaks. With a flawless accuracy, this mass flow meter allows you to control and adjust the parameters of your air compressor.

with the ultrasonic compressed air flow meter

Thanks to the ultrasonic compressed air flow meter :

  1. Control the load of air compressors (medium and peak)
  2. Detect and stop compressed air leaks
  3. Measure your air consumption
  4. Analyze your compressed air usage
  5. Evaluate energy performance
  6. Achieve energy savings
  7. Reduce maintenance
  8. Optimize filter replacement
  9. Balance your compressed air networks
save energy

Why measure your compressed airflow rate ?

why measure compressed air flow diagram

Efficient use of energy helps control costs and reduce the negative impact on the environment.
Among industrial utilities, compressed air represents up to 20% of the total energy budget of a factory. The need for this gas is one of the largest electrical consumption items, but the price of this energy can be controlled.

Flowmeters are used in compressed air systems to provide a measure of air flow rate. Compressed air systems typically have high leakage rates, high start-up and shut-down times, and other problems that lead to losses and therefore waste. Industrial air mass flowmeter measurement helps to identify areas of excessive use and to better manage the overall flow rate of the compressed air system.

Measuring, analyzing and communicating key plant performance indicators can therefore help raise awareness of effective practices, and thus help control costs, ensure better protection of equipment and achieve savings.

measurement analysis communication of performance indicators

Measuring principle: how to measure a compressed air flow rate ?

Fuji Electric flowmeters for compressed air consist of two ultrasonic sensors installed on either side of the meter inlet and outlet.

measurement principle how to measure compressed air flow

As the liquid flows, the ultrasonic waves propagate diagonally from the upstream sensor to the downstream sensor and back in the pipe where the mass flow meter is positioned.

With this technique, the waves are "carried" by the fluid, in the other, they are "braked".

It therefore takes a different time to pass from the upstream sensor to the downstream sensor. This difference is proportional to the velocity and therefore the flow rate of the fluids.

This time difference allows to detect the fluid flow velocity and to calculate the volumetric flow rate according to the cross section of the flow meter and the Measuring principle - how to measure a compressed air flow rate FWD screenflow velocity measurement.

number of measuring points for compressed air flow meters

The number of measuring points on compressed air flowmeters must be adapted to the size and use of the system.

The FWD-A ultrasonic flowmeter is an alternative to the thermal mass flowmeter for flow measurement, as it doesn't clog up and is highly resistant to oil-contaminated compressed air. The meter even works in the presence of water droplets (dew point).

Thanks to the combined measurement of flow, temperature and pressure, this ultrasonic compressed air flowmeter provides clear data on compressed air consumption and eliminates any uncertainty in final measurements.


Wide range of applications for ultrasonic mass flowmeters for industrial airflow

ultrasonic mass flow meter applications

This flowmeter withstands industrial environments and vibrations.
These compressed air flowmeters are ideal for companies operating in industrial environments.

  • pharmaceutical 
  • glass
  • automotive
  • chemical
  • metal
  • food and beverages


Advantages of the ultrasonic air flow meter :

benefits of ultrasonic flow meters for compressed air

  • Easy, quick and economical installation - No wiring work with Lithium-ion battery powered Advantages of the ultrasonic air flow meterversion (10-year life span)
  • Clear reading of your compressed air consumption - Fast, real-time display of air consumption on the flowmeter's rotating LCD interface
  • Clear viewing of compressed air and nitrogen consumption - Fast real-time measurement on large rotating LCD display
  • Early detection of air leaks - Large measurement dynamic and excellent repeatability
  • Maximum flexibility and wide range of applications - Bidirectional, lossless ultrasonic technology
  • Maximum flexibility and wide range of applications - Bidirectional flow meter ultrasonic technology with no pressure loss
  • Build to last in harsh industrial environments - Robust and waterproof design
  • A wide range of pipe diameters - Available in a range of diameters from DN25 to DN200
  • Easily adapts to all industrial airflow conversion formulas - Instantaneous flow rate can be converted into Nm3/h (flow rate at 0°C and 101.3 kPa atmospheric pressure) or standard m3/h (flow rate at user defined temperature and pressure).
  • Allows bi-directional measurement of compressed air flow - The FWD flowmeter can accurately measure the volume of air in a system, as well as its distribution between several networks, enabling them to be balanced.

screw-on model

Screw-on models ∅25 and 32mm

modele-wafer-en

Wafer models ∅40, 50, 65 and 80mm

model between flanges

Flange models
∅100, 150, and 200mm


Specifications :

Pipe diameter (mm ): DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN150, DN200

Supply voltage: 24 V DC ±10% or lithium-ion battery (operating life: approx. 10 years at 20°C)

Power consumption: 24 V DC, 1.5 W or less

Fluid Gas measured: Air (mainly factory air)

Fluid temperature : -10°C to 60°C, RH90% or less

Pression de service PS : < 1 MPa ou 10 bar (pression relative)

Scale (instantaneous flow) and accuracy Diameter (mm) Scale (m3/h) Accuracy ±2.0% of measurement ±5.0% of measurement: DN25±0.6-35±3.5-35 m3/h±0.6-3.5 m3/hDN32±1.1-65±6.5-65 m3/h±1.1-6.5 m3/hDN40±1.3-80±8-80 m3/h±1.3-8 m3/hDN50±2.5-150±15-150 m3/h±2.5-15 m3/hDN65±4-240±24-240 m3/h±4-24 m3/hDN80±5-300±30-300 m3/h±5-30 m3/hDN100±10-500±50-500 m3/h±10-50 m3/hDN150±24-1200±120-1200 m3/h±24-120 m3/hDN200±40-2000±200-2000 m3/h±40-200 m3/h

Flow conversion accuracy: FWD025-080: ±2.5% of measurement (at 500 kPa, 25°C, dry air)
FWD100-200: ±2.0% of measurement (at ≥ 300 kPa)

Display: 1st line Totalizer for Totalized value (m3) 8-digit, Instantaneous flow (l/mm) 8-digit 2nd line Instantaneous flow (Nm3/h) 5-digit (4-digit after 2000), Pressure (kPa) 5-digit, Temperature (°C) 3-digit

Outputs (not available with battery supply) : Signal current output 4-20 mA DC (±0.5% PE), max. load resistance. 400Ω, max. current output 22 mA
Instantaneous flow, pressure, or temperature Contact output2 contact output, max. load. 24 V DC, 50 mA, max. frequency. 10 Hz, Output 1: pulse (forward), Output 2: pulse (reverse), high/low alarm, system error

Connection: ⌀25, ⌀32 mm⌀25 mm: Rc1, ⌀32 mm: Rc1-1/4⌀40-⌀80 mm
Flange mounting (JIS10K)⌀100-⌀200 mm Flange mounting JIS10K

Mounting condition (straight lengths): ⌀25, ⌀32 mm 20D or more upstream, 5D or more downstream
When used in bidirectional measurement, 20D or more downstream and upstream⌀40-⌀200 mm10D or more upstream, 5D or more downstream
When used in bidirectional measurement, 10D or more downstream and upstream

Parts in contact with gas: Aluminum alloy, PPS, siliconized fluor rubber, etc.

Indoor or outdoor installation (IP64 equivalent)

Storage temperature : -20°C to 70°C, non-condensing

features

Optimize your air and nitrogen flow with our flowmeter designed specifically for you!

Our flowmeters for compressed air offer benefits that effectively improve the monitoring and control of production processes in many of your applications.