BySantosh Birajdar

ULTRASONIC FLOW METERS

CONTENTS

• Introduction• Why do you need energy monitoring metering?• What is Hydronic System Energy Metering?• Why use Submetering?• Types of Flow / Energy Meter Technologies• Typical applications• Economics

Ultrasonic Flow Meters

How it works:

Ultrasonic Flow Meters

When selecting technology, you should consider:

Pipe considerations – Include pipe size and material, layout, and straight pipe runs available for flow sensor installation.

Flow rate –Flow sensors must be sized to accommodate any balancing configuration or valve position.

System temperature – Flow and temperature sensors are designed especially for chilled or hot water systems. Example: thermistors are fine for chilled water, but RTD’s are a better selection for hot water systems.

Accuracy – Accuracy and repeatability help determine how precise your energy measurements will be. Some applications leverage tighter accuracy and repeatability tolerances to maintain tighter controls on hydronic system performance.

Service considerations – For new installations, direct insertion of sensors is usually possible. However, when retro-fitting a system, often pipes cannot be drained requiring a wet tap.

Optional display – Depending on owner requirements, local displays of flow, temperature, energy rate, and/or energy totals may be required.

Optional connectivity – Data logging and Building Automation System (BAS) networks, in addition to simple pulse and analog signals, include many different network protocols

Ultrasonic Flow Meters

Ultrasonic Flow Meters

Ultrasonic Flow Meters

Ultrasonic Flow Meters

Ultrasonic Flow Meters

• Basic principles– Mechanical Impeller spins with flow

• Key advantages– Easy to install

– Hot tap installation

– Economical Price

• Applications– Clean cold or hot fluids, pipes must

be full

– Installation cost and service can be very costly

Impeller Meter

Ultrasonic Flow Meters

• Basic principles– Uses an electromagnetic field

• Key advantages– No moving parts

– No pressure drop

– Accurate with reduced pipe runs

• Applications– Water and other conductive fluids

– Installation cost and relatively maintenance cost.

Magnetic Meter

Ultrasonic Flow Meters

• Basic principles– Uses ultrasound waves

to measure flow

• Key advantages– Non-invasive

– No need to shut down system

– Economical Price

• Applications– Relatively clean cold or hot fluids,

pipes must be full

– No maintenance costs

Clamp-on, Fixed

Ultrasonic Flow Meters

• Basic principles– Uses ultrasound waves

to measure flow

• Key advantages– Non-invasive

– No need to shut down system

– Rental & Purchase

• Applications– Relatively clean cold or hot fluids,

pipes must be full

– No maintenance costs

Clamp-on, Portable

APPLICATIONS:

Ultrasonic Flow Meters

* Water Monitoring * Energy Management * HVAC * Test & Balance * Chillers * Cooling Towers * Boilers * And More……..

Ultrasonic Flow Meters

Using Portable Ultrasonic Meters

• Discover process.• Spot check flows• Water usage study• Energy usage study• Balancing Hydronic

system• Economics

Ultrasonic Flow Meters

THANK YOU