Fuji Electric Instruments and Meters Series FSH, FSW, FLY Dual Sonic Mixed Type Ultrasonic Flowmeter (Duosonics) Product Specifications Sheet

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

Flow transmitter

algorithm, either method can be automatically switched to

(FSH)

accommodate for varying fluid conditions such as concentra- tion of particles and/or air bubbles and flow velocity.

FEATURES

1. Automatic switchover function between Pulse Doppler Detector method utilizing ultrasound reflection and Transit Time (FSW)

method utilizing ultrasound penetration • Applicable to various kinds of liquids with/without air bubbles and/or solid particles

Application: Uniform liquid in which ultrasonic waves can

• Applicable to liquid flow that changes in nature frequent-

propagate.

ly or periodically

Air bubble quantity: Pulse Doppler method: 0.02 to

2. High-accuracy non-intrusive (non-contact) volumetric

15% of volume at 1 m/s

flow rate measurement of liquid flow in closed pipes.

Transit time method: 0 to 12%

• Accuracy of 0.5% to 1% (depending on the measuring

of volume at 1 m/s

mode and pipe size)

Fluid temperature: -40 to +100ºC (FSW12), -40 to

• Clamp-on sensor

80ºC (FSW21, FSW40,FSW50)

3. Direct measurement of velocity profile in case of Pulse

Type of flow: Pulse Doppler method: axi-

Doppler method

symmetric flow in a filled pipe.

• High accuracy of 0.5% to 1.5% (correction coefficient

Transit ime method: well-

unnecessary)

developed turbulent or laminar

• Applicable to undeveloped flow (short straight pipe)

flow in a filled pipe.

• Applicable to flow hovering in the transitional region

Applicable flow pipe:

between laminar flow and turbulent flow

Material: Plastics (PVC, FRP, etc.) or

4. High speed response: 0.2sec (pulse Doppler method)/

Metals (carbon steel, SS, cop-

0.5sec (transit time method)

per, aluminum, etc.)

5. Real time monitoring of velocity profile by PC in case

Pipe size: 40 to 1000 mm

of Pulse Doppler method (option)

(inside diameter)

6. Dual-path option improves performance

Liner: Tar epoxy, mortar, etc. Straight pipe length: Typically 10D for upstream and

5D for downstream. Refer to

SPECIFICATIONS

JEMIS-032 in detail.

Operational specifications

(Note) JEMIS: Japan Electric

System configuration: Measuring Instruments

The system is composed of one/two detec- Manufactures' Associa- tors (Model: FSW) and one Flow transmitter tions Standard (Model: FSH), realizing single-path/two-path Velocity: Hybrid mode: 0 to ±0.3 --- ±Maximum Veloc- measurement. ity (depending on pipe diameter) (Note) Maxi- Hybrid mode or transit time mode is select- mum measurement range in Hybrid mode able. (see page 4) In case of hybrid mode, ether Pulse Doppler Transit time mode: 0 to ±0.3 --- ±32 m/s method or transit time method is automati- Power supply: cally selected depending on conditions of 100 to 240 Vac+10%/-15%, 50/60Hz or 20 to measured liquid and magnitude of velocity. 30 Vdc

EDS6-132g Date Feb. 10, 2012