Manas Microsystem is India’s one of the top Ultrasonic Flow Meter manufacturers and suppliers. A comprehensive range of ultrasonic flow meters is available from us including Clamp-on Type Ultrasonic Flow Meters, Insertion Ultrasonic Flow Meters, and Handheld Ultrasonic Water Flow meters. For the volumetric metering of water, ultrasonic flow meters have been used in businesses and markets for a long time. There are two types of Ultrasonic Flow Meters. One works on the Transit Time or Time of Flight principle. The second one works on the Doppler Effect principle. The transit time meter is used for clear liquids or liquids having very low levels of undissolved solids. When the ultrasound wave passes through the liquid the component of liquid velocity is added to ultrasound velocity. By careful measurement of the Time required by the sound wave to reach the other end of the diameter, one can calculate accurately the water velocity. By knowing the velocity the volumetric flow rate can be calculated.

1. Ultrasonic Flow Meter
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Introduction
• For the volumetric metering of water, ultrasonic flow meters have been used in businesses and
markets for a long time.
• Manas Microsystem is India’s one of India’s leading Ultrasonic Flow Meter manufacturers and
suppliers.
• A comprehensive range of ultrasonic flow meters is available from us, including Bulk Type
Ultrasonic Flow Meters, Clamp-on Type Ultrasonic Flow Meters, and Insertion Ultrasonic Flow
Meters.
• We also manufacture Portable Ultrasonic Water Flow Meter and Handheld Ultrasonic Water
Flow Meter.

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Working Principle of Ultrasonic Flow Meter
Industrial Ultrasonic Flow Meters work mainly on two principles:
• One works on the Transit Time or Time of Flight principle
• The second one works on the Doppler Effect principle.

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Transit Time Principle of Ultrasonic Flow Meter
• The transit time meter is used for clear liquids or liquids
having very low levels of undissolved solids.
• When the ultrasound waves pass through the liquid, the
component of liquid velocity is added to ultrasound
velocity.
• By careful measurement of the Time required by the
sound wave to reach the other end of the diameter, one
can calculate accurately the liquid velocity.
• By knowing the velocity, the volumetric flow rate can be
calculated.

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Doppler Principle of Ultrasonic Flow Meter
• Doppler meter is suitable for liquids having a
high level of undissolved solid
contaminations.
• When the sound wave gets reflected from
any particle in the flow its frequency
changes and observing the change in
frequency the velocity of the particle can be
calculated and in turn the volumetric flow.

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Types of Ultrasonic Flow Meter (*)
There are two types of transit time based Ultrasonic flow meter
• Clamp-on Type Ultrasonic Flow Meter
• Insertion Type Ultrasonic Flow Meter
(*) Transit Time Based

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Clamp-On Type Ultrasonic Flow Meter
• The Flowmeter unit utilizes two transducers
that function as both ultrasonic transmitters
and receivers.
• The transducers are clamped onto the outside
surface of the closed pipes.
• The transit time flow meter measures the time
taken by an ultrasonic signal transmitted from
one transducer to cross the pipe and be
received by second transducer.
• The flow is then measured by comparing the
upstream and downstream time of Ultrasonic
signal.

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Insertion Type Ultrasonic Flow Meter
• It utilizes two transducers that function as both Ultrasonic
transmitter and receiver.
• The transducer is inserted in the surface of the closed
pipes.
• The transit time flow meter measures the time taken for an
ultrasonic signal transmitted from one transducer to cross
the pipe and be received by second transducer.
• The flow is then measured by comparing the upstream and
downstream time of Ultrasonic signal.
• With no flow through the pipe the transit time would be
equal in both directions.

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Applications of Ultrasonic Flow Meter
• Water, sewage (with low particle
content), and seawater
• Water supply and drainage water
• Process liquids; Liquors
• Milk, yogurt
• Gasoline kerosene diesel oil
• Power plant
• Metallurgy, Laboratory
• Energy conservation, economize on
water
• Food and medicine
• Heat measures, Heat balance
• Pipeline leak detection

10. We are certified with:
ISO/IEC 17025:2017 | ISO 9001:2015
ISO 14001:2015 | OHSAS 45001:2018
THANK YOU
EL 54, Electronic Zone,
J-block, MIDC Bhosari,
Pune 411026.
Maharashtra, India.
Tel: 8484039026 Ext. No. 106
Mob: +91 77220 34924 / 74200 99054
mktg@manasmicro.com
www.manasmicro.com