::: Asiem Engineering Company :::

beam ultrasonic flowmeter

for custody transfer of light liquid hydrocarbons
Long term stability; high reliability
Eliminates maintenance
Non-intrusive
No wear
No pressure loss
Bi-directional
Compliant with OIML R-117, API

KROHNE is innovation in ultrasonic flowmetering
The introduction of the ALTOSONIC V, the highly accurate, five-beam, liquid ultrasonic
flowmeter in the 1990's for multiple products was a true revolution in the flow market for custody transfer and master metering.
Over the past years ultrasonic flowmeters have gained full acceptance and have become the fastest growing flow metering technology in the world. KROHNE's UFM 3030, the first truly universal and easy to use ultrasonic flowmeter for process applications, created a breakthrough in the widespread application of ultrasonic flowmeters worldwide.

Introducing ALTOSONIC III
Now, KROHNE is proud to introduce the ALTOSONIC III, an innovative and economical solution for custody transfer of light oil products. The 3-beam ALTOSONIC III is the outcome of our revolutionary development of liquid multiple-beam ultrasonic flowmeters. It combines innovative technology with long-term experience to guarantee superior performance at an attractive price.

KROHNE is experience
The ALTOSONIC III is the result of years of experience in the field with ultrasonic flowmeters for custody transfer including fiscal metering for a very wide range of applications. 25 Years ago KROHNE was already one of the pioneers in ultrasonic flow metering. In line with our vision, we continue to develop and perfect a wide range of single and multiple beam ultrasonic flowmeters for liquids and gases. Since 1980 over 30,000 KROHNE ultrasonic flowmeters have been installed showing reliable and trouble-free operation.

KROHNE is quality
It is KROHNE's policy to calibrate each flowmeter that leaves our factory by means of wet calibration to guarantee the highest possible accuracy and quality. That's why we have our own accredited calibration rigs that comply with the most stringent demands (according to IEC-ISO 17025).

Custody Transfer for single products!
ALTOSONIC III
The alternative for conventional flowmeters
The ALTOSONIC III offers some decisive advantage over mechanical
flowmeters like turbine meters and PD meters.

No obstructions in the pipeline
ALTOSONIC III has no parts protruding into the flow, in other words
no risks of flow obstruction or blockage.

No moving parts
ALTOSONIC III has not a single internal moving part that can
break down nor suffer from wear caused by corrosive or abrasive
fluids, gas and solids or from build-up like wax. This means
maintenance-free and excellent long term stability.

No filters
For ALTOSONIC III filters are not required, which results in costs
savings on regular inspection, maintenance and cleaning of filters
and no additional pressure drop.

Virtually no pressure drop
Unrestricted flow means no loss of pressure. Reducing the pressure
drop means smaller pump capacity, improved pipeline efficiency,
and savings on energy costs.

Result: Minimal maintenance
and substantial savings in cost of ownership.

Multi-channel ultrasonic flow measurement

Like all KROHNE ultrasonic flowmeters, the ALTOSONIC III operates by the transit-time differential method. The measurement principle is based on a simple physical principle. Imagine two canoes crossing a river diagonally, one with the flow and one against the flow. Naturally the canoe that is travelling with the flow will reach the opposite side sooner than the canoe that is travelling upstream.

Acoustic signals behave in a comparable way. By means of ultrasonic transducers, the transit-time of acoustic signals that travel upstream and downstream are measured. The difference in transit-time is proportional to the mean liquid flow velocity and is transformed into an output signal and display of volumetric liquid flow rates.

The three measuring beams of the ALTOSONIC III make a 3-dimensional cross-section of the velocity distribution, or flow profile of the medium that flows through the flow sensor. These measuring beams are positioned such that the influence of the flow profile is strongly reduced.