EDS6-132F Datasheet, PDF (1/12 Pages) Fuji Electric – HYBRID ULTRASONIC FLOWMETER (Pulse Doppler method + Transit Time method)

HYBRID ULTRASONIC FLOWMETER <Duosonics>
(Pulse Doppler method + Transit Time method)
DATA SHEET
FSH, FSW, FLY
This meter is the world’s first non-intrusive type ultrasonic
flowmeter utilizing Pulse Doppler method along with Transit
Time method. It enables measurement of velocity profile
directly resulting in high accuracy. This makes it suitable for
undeveloped flow and for short straight pipes. Pulse Dop-
pler method requires reflectors in the liquid and is utilized on
opaque liquids while Transit Time method requires ultrasound
penetration and is ideal for clean liquids. The new hybrid
technology utilizes both methods in a complementary fash-
ion thus enabling a wider range of applications than it is pos-
sible now. In addition, thanks to Fuji’s new state-of-the-art
algorithm, either method can be automatically switched to
accommodate for varying fluid conditions such as concentra-
tion of particles and/or air bubbles and flow velocity.
Flow transmitter
(FSH)
FEATURES
1. Automatic switchover function between Pulse Doppler
method utilizing ultrasound reflection and Transit Time
method utilizing ultrasound penetration
• Applicable to various kinds of liquids with/without air
bubbles and/or solid particles
• Applicable to liquid flow that changes in nature frequent-
ly or periodically
2. High-accuracy non-intrusive (non-contact) volumetric
flow rate measurement of liquid flow in closed pipes.
• Accuracy of 0.5% to 1% (depending on the measuring
mode and pipe size)
• Clamp-on sensor
3. Direct measurement of velocity profile in case of Pulse
Doppler method
• High accuracy of 0.5% to 1.5% (correction coefficient
unnecessary)
• Applicable to undeveloped flow (short straight pipe)
• Applicable to flow hovering in the transitional region
between laminar flow and turbulent flow
4. High speed response: 0.2sec (pulse Doppler method)/
0.5sec (transit time method)
5. Real time monitoring of velocity profile by PC in case
of Pulse Doppler method (option)
6. Dual-path option improves performance
SPECIFICATIONS
Operational specifications
System configuration:
The system is composed of one/two detec-
tors (Model: FSW) and one Flow transmitter
(Model: FSH), realizing single-path/two-path
measurement.
Hybrid mode or transit time mode is select-
able.
In case of hybrid mode, ether Pulse Doppler
method or transit time method is automati-
cally selected depending on conditions of
measured liquid and magnitude of velocity.
Detector
(FSW)
Application: Uniform liquid in which ultrasonic waves can
propagate.
Air bubble quantity: Pulse Doppler method: 0.02 to
15% of volume at 1 m/s
Transit time method: 0 to 12%
of volume at 1 m/s
Fluid temperature: -40 to +100ºC (FSW12), -40 to
80ºC (FSW21, FSW40,FSW50)
Type of flow:
Pulse Doppler method: axi-
symmetric flow in a filled pipe.
Transit time method: well-
developed turbulent or laminar
flow in a filled pipe.
Applicable flow pipe:
Material:
Plastics (PVC, FRP, etc.) or
Metals (carbon steel, SS, cop-
per, aluminum, etc.)
Pipe size:
(inside diameter)
40 to 1000 mm
Liner:
Tar epoxy, mortar, etc.
Straight pipe length: Typically 10D for upstream and
5D for downstream. Refer to
JEMIS-032 in detail.
(Note) JEMIS: Japan Electric
Measuring Instruments
Manufactures' Associa-
tions Standard
Velocity:
Hybrid mode: 0 to ±0.3 --- ±Maximum Veloc-
ity (depending on pipe diameter) (Note) Maxi-
mum measurement range in Hybrid mode
(see page 4)
Transit time mode: 0 to ±0.3 --- ±32 m/s
Power supply:
100 to 240 Vac+10%/-15%, 50/60Hz or 20 to
30 Vdc
EDS6-132f
Date Apr. 1, 2011