Josts offers Constant Temperature Anemometer (CTA),
also known as Thermal Anemometry, is a technique for the measurement of
turbulence in 1, 2 or 3-dimensional gas and liquid flows, using hot-wire or
hot-film probes inserted in the flow. Constant
Temperature Anemometer offered by Josts is suitable for the measurement of
flows with very fast fluctuations at a point (high turbulence) and the study of
flow micro structures, where there is a need to resolve small flow eddies down
to the order of tenths of a mm.
Features:
· Measures velocities
from a few cm/s to supersonic
· High temporal
resolution: fluctuations up to several hundred kHz
· High spatial
resolution: eddies down to 1 mm or less
· Measures all three
velocity components simultaneously
· Provides
instantaneous velocity information
· Continuous analog
output
Josts offers Laser Doppler Anemometer (LDA),
also known as Laser Doppler Velocimetry (LDV), is an optical technique ideal
for non-intrusive 1D, 2D and 3D point measurement of velocity and turbulence
distribution in both free flows and internal flows. Science and industry apply
our Laser Doppler Anemometer systems to gain a clearer understanding of
fluid mechanics. The measurement results are important steps in fine-tuning
product designs to improve aerodynamic efficiency, quality and safety.
Features
· Non intrusive
· No calibration
required
· Velocity range 0 to
supersonic
· One, two or three
velocity components simultaneously
· Measurement
distance from centimeters to meters
· Flow reversals can be
measured
· High spatial and
temporal resolution
· Instantaneous and
time averaged
Josts
offers Phase Doppler Anemometer (PDA) (also known as Particle
Dynamics Analysis or PDPA) systems measure the size, velocity and concentration
of spherical particles, droplets or bubbles suspended in gaseous or liquid
flows. A very common application is the analysis of atomized liquids (sprays)
in e.g. fuel injection, spray painting, liquid metal spray and pharmaceutical.
Gas lasers and Diode Pumped Solid State lasers are used in Anemometer.
Features
· Non intrusive
· Can measure in
dense sprays
· On-line, real time
results
· Simultaneous size
and velocity of each droplet or particle
· Interferometric
technique, requires no calibration
· No prerequisite
assumptions on size and velocity distributions
One, two or three velocity
components simultaneously