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Always keep in your mind that the physical measurement is based on the time and
Delta t result. Lower Delta t requires more attention to probe choice, installation
and zero setting …
So, a flow of 2 m/s in a 1 m I.D. pipe would give a Delta t around 1500
nanosecond when 0.5 m/s in a 10 mm ID pipe would show 5 ns, which could be
sufficient but is a low range value.
3.3
Typical Applications
The main purpose of the UF_801 P and P-B is a competitive flow measurement
that can be installed quickly and easily. With
clamp-on
transducers, there is no
need for a spool piece or pressure tapping, but keeping the same final accuracy as
any flow meter. Compared to previous or existing devices and compared to our
main competitors, this new device increases the performance limits.
The concept is a smart use of hardware and firmware resources, easy to adapt to
end user flow problems and to offer complete diagnostics on actual flow
conditions, including liquid quality or density information…
The UF 801-P/PB
gives the actual flow value and its direction. Normally used as
a portable device, it can also be use for temporary replacement of any flow-meter
for flow indication, regulation and also volume counter.
Ultraflux offers a wide range of probes
with different sizes and frequencies to
be selected depending on the application and pipe diameter from 10 mm I.D. to
more than 5 metres.
A large advantage on ultrasonic signals is obtained by choosing our microstructure
technology probes. From the smallest to the largest:
SE 1714/2~4 MHz ; SE 1586/2 MHz ; SE 1515/1 MHz or SE 1599/0.5 MHz.
The clamp on solution is available on all metallic or plastic pipes
. Most
asbestos pipes are also accepted. The only limitations could come from too high
corrosion or too thick internal pipe deposits. Lower is the probe frequency, higher
is the limit.
When the pipe wall material (concrete …) or condition (corrosion …) is not suitable
for clamp on transducers, we can propose insertion transducers with possible
installation by hot tapping.
Most liquids are acceptable:
Water first, any quality, from ultra-pure and non
conductive to sewage and charged quality. That includes also hot water.
Clamp-on sensors are very convenient for petrochemical products, acids or any
liquid presenting some contact or vapour danger.
With some restrictions concerning the pipe material and diameter, and also the
pressure, UF 801-P permits clamp-on flow results on gas pipe-lines: natural gas,
compressed air….
When the instrument must have an official use
, it is recommended to obtain
an official certificate by comparing it to a reference standard on a flow rig.
