Chemical Engineering September 2020 - 68

Europe 2020 Special Advertising Section
Ultrasonic Flow
Meters for
Additives
A
ccurate and compact liquid flow meters
of Bronkhorst's ES-FLOW Series operate
on an innovative measuring principle, using
ultrasound in a very small tube. They have
been developed to measure low flow rates
e.g. of additives, from 4 to 1500 ml/min. A
wide range of liquids can be measured independent
of fluid density, temperature and
viscosity.
Due to the combination of a straight
sensor tube with zero dead volume, selfdrainability,
orbital TIG-welding and hygienic
connections, these flow meters can be
used for hygienic applications. Wetted parts
are made of stainless steel, except for the
rubber gaskets at the Tri-Clamp or flange
Sustainable, energy-efficient and
intrinsically safe
Tried and tested chemical pump for extreme challenges
T
he horizontal, magnetically coupled centrifugal pump MPCHDryRun produced by the
pump specialist Bungartz is particularly suitable for pumping liquids which are laden
with solids. The chemical pump is suitable for all ATEX categories and has proven its worth
all over the world for the pumping of hazardous liquids and gas-laden media. It is even
used for hot products such as melts without any prefilter. Liquids can be pumped at a temperature
of up to 400°C liquids without any external cooling or flushing. This enables a heat
barrier to be created between the product room and storage space, thereby minimizing the
heat transmission to the bearing mount. The unique design principle is based on a magnetic
coupling and the so-called hydrodynamic shaft seal. The Magnetic drive runs permanently
dry at a reduced pressure.
The ceramic containment can located between the inner and outer magnet rotor enables
eddy current-free magnetic field transmission without any product contact. The advantage:
The MPCHDryRun does not require any dry-running protection and can even be operated
without liquid. " It also runs when it runs dry " , is how Frank Bungartz, (CEO) of the company
of the same name, puts it.
Unlike conventional magnetic drive pumps, the shaft is supported by grease-lubricated
roll bearings which are extremely low-maintenance. The efficiency of the MPCHDryRun is significantly
increased due to the use of ceramic containment cans that are free of eddy currents.
The permanently lubricated roll bearings have a proven service life of at least 32,000 hours.
Like all hydrodynamic sealing systems, this chemical pump also operates free of wear.
Low life cycle costs also result from low maintenance requirements with high annual pumping
runtimes. Not least the long service life makes this intrinsically safe chemical pump a
sustainable investment. Reliability and consistency are components of the company philosophy.
This is also shown by the availability of wearing and spare parts over several decades.
www.bungartz.de/en/mpch-dryrun.html
connections. The exterior design is according
to IP66 as well as IP67. For non-hygienic
applications, the instruments can also be
equipped with compression type fittings.
The user interface is a capacitive touchscreen
with a TFT display to operate and
readout the instrument. Also, the flow meters
feature fieldbus interface options and
additional functions such as totalisation
and alarms. They can be tuned according to
customer requirements using the RS232/
fieldbus interface and free software tools.
The liquid flow meters contain an adaptive
PID controller for fast and simple operation
of a variety of control options. In
additive dosing applications, the flow meters
are often combined with miniature
gear pumps. This eliminates the need to
pressurise the fluid at the inlet side, which
would be required for flow meters combined
with control valves.
www.bronkhorst.com
68
ChemiCal engineering www.Chemengonline.Com september 2020

http://www.bungartz.de/en/mpch-dryrun.html http://www.bronkhorst.com http://www.Chemengonline.Com

Chemical Engineering September 2020

Table of Contents for the Digital Edition of Chemical Engineering September 2020