measuring tubes high working frequency
of over 200 Hz, the coupling of installation
vibrations or similar oscillations into the
measuring system is prevented and so with
avoiding fault signals. A further advantage
in mounting the sensor coils on a motionless
PCB is the elimination of open wiring
within the sensor, as is the case of standard
commercially available devices. This wiring
often presents a vulnerable weak point,
since the wire and its point of connection
must vibration continuously with the
frequency of the measuring tubes.
With the exception of the laser welded
measuring tubes, the HPC consists
essentially of a solid drilled and tapped
stainless steel block. Furthermore, the HPC
has been stripped of a splitter at the inflow
of the tubes, instead possessing a reservoir
– in which the process pressure distributes
the fluid exact into the measuring tubes,
hence preventing flow disturbances
generally caused by splitters. This technique
has the timesaving advantage of one less
component to weld as well as one less
potential material stress source. The result
is an extremely robust device capable of
withstanding temperatures and pressures
of up to 180 °C and 600 bar respectively. “In
principle, the device may also be ordered
with Hastelloy tubes and other alloys”, added
Schramm.
Variable Assembly Concept
For flexible installations, different
constructive variations of the HPC are
available: Besides the traditional Inline
Version, which can be inserted directly into
the process line, there are three further
models available, which are suitable for
either wall mounting, by means of wall
brackets, or may simply be placed on a table.
“For our Table model there are two available
options: either with the measuring pipes
pointing downwards below the supply
line or pointing upwards above the supply
line. For the measurement of gas, upward
pointing tubes are recommended to prevent
any issues with fluid collecting in the
tubes. The same also goes visa versa for the
measurement of fluids”, Schramm remarks.
Collectively, the devices are
available in three measuring
ranges:
0–20, 0–50 and 0–160 kg/h. On request
other adaptations are also available, for
example, customer-specific enclosures,
connectors or interfaces. In particular for
the chemical and semiconductor industry,
fully-welded stainless steel enclosures are
also available.
was drastically reduced, reducing so with
development costs significantly”, Schramm
says contentedly. Furthermore, with the
aid of the simulation technology customer-
specific requirements can be captured
and individual solutions presented in the
shortest of time.
The HPC was presented for the first time
on the Hannover trade fair from 23rd to
the 27th of April, simultaneously being
the official launch of sales. Furthermore,
ATEX and IECEx approvals are also planned
as well as a patent registration of the
technology. Parallel to the launch of sales,
Heinrichs Messtechnik is also working
on a new miniaturized transmitter with
flexible interfaces, specially designed for
compatibility with the HPC.
Rapid development success
with High-End Simulation
The whole development phase took a mere
1.5 years. To achieve this short development
time, Heinrichs Messtechnik utilized a state-
of-the-art simulation technology. “By these
means the required number of prototypes
About Heinrichs
Founded in 1911 in Dusseldorf,
Heinrichs Messtechnik has played
a decisive role in the development
and marketing of flow-meters for
over a hundred years, one of its
core target groups from the very
beginning being the chemical and
petrochemical industries.
For this reason, the development
of Full-Metal Area Flow-Meters was
driven from the early 60’s onwards.
In the mid-1980’s Heinrichs
developed and marketed, as the
first European company, a mass
flow meter according to the
Coriolis principle, systematically
increasing its range of Coriolis
meters in the following years.
Further information can be
found at: www.heinrichs.eu