Chemical Engineering July 2023 - 18

Focus
Pressure & Flow Measurement
Ashcroft
A new fluoropolymer pressure
transducer with display
The ZL95 fluoropolymer pressure
transducer (photo) provides reliable
and repeatable pressure measurements
in corrosive environments. This
transducer features a four-digit LED
display with NPN switch outputs, capacitance
sensor for excellent thermal
stability and PTFE/PFA (polytetrafluoroethylene/perfluoroalkoxy
alkanes)
wetted parts that combine with the
company's patented vent design to
provide extended cycle life and corrosion
resistance to chemicals, such as
hydrofluoric acid. The transducer is
compatible with pipe diameters from
0.25 to 0.5 in. O.D. and has multiple
mounting
options,
including
tube
connections, press fit nuts, flared
nuts and threaded nuts. The ZL95 is
suitable for cleaning equipment for
semiconductors, cleaning equipment
for flat-panel displays, wet stations
and chemical supply systems. -
Ashcroft Inc, Stratford, Conn.
www.ashcroft.com
Bronkhorst High-Tech
Chell Instruments
WIKA Alexander Wiegand
18
Flowmeters with media-isolated
pressure sensors
The IQ+FLOW series of miniature
mass flow and pressure meters and
controllers is used by equipment
manufacturers in the analytical, biotechnology
and life science market.
The footprint of single channel instruments
is only 20 mm by 40 mm,
which is advantageous for manufacturers
of desktop equipment.
The IQ+FLOW product line has now
been extended to pressure instruments
with media-isolated pressure
sensors. The sensor chip is
protected by a stainless-steel diaphragm
and oil-filled compartment.
With this new option, the instruments
can handle a much wider variety
of media than before, including
light gases, such as hydrogen and
helium. IQ+FLOW series is available
in three configurations: single-channel
versions (photo, left) for either
inline or top-mount integration and
multi-channel versions. Compact
two- or three-channel instruments
(photo, right) can be configured
on user specification to measure
or control the mass flow or the upstream
or downstream pressure in
a system. - Bronkhorst High-Tech
B.V., Ruurlo, the Netherlands
www.bronkhorst.com
This pressure scanner is in a
smaller package
The microDAQ3-16 (photo) combines
high-accuracy digital sensors
and an advanced-processor design
to give the most accurate results possible.
The microDAQ3-16 delivers the
same performance as the 64-channel
version. However, this latest edition
is
a more compact package,
improving its versatility and suitability
for increasingly demanding applications.
The microDAQ utilizes technology
developed in house, within the
company's microDAQ and nanoDAQ
ranges, such as an embedded web
server, IEEE 1588 PTP time stamping,
power-over-ethernet, CAN,
hardware trigger and EtherCAT. The
device makes use of highly accurate
transducers, which are combined
with both a pressure and temperature
24-bit analog to digital converter
(ADC), to give a precise temperature
measurement
and
almost
entirely
compensate for thermal effects. Additionally,
the microDAQ3-16 is capable
of outputting differential or absolute
compensated engineering unit
pressure data at speeds of up to 400
Hz per channel. - Chell Instruments,
Ltd., North Walsham, U.K.
www.chell.co.uk
A pressure transducer for
high-purity applications
The WUD-2x-E (photo) is a compact,
ultrahigh-purity transducer for highaccuracy
pressure measurement of
ultrapure gases in the semiconductor
industry. Due to minimal signal noise,
the sensor provides precise measured
values in the long term. Thanks
to active temperature compensation,
this can be done even with high temperature
fluctuations. The measured
values can be viewed on the display.
By using EtherCAT, the model
WUD-2x-E does not have to be
disconnected from the network for
firmware updates or troubleshooting.
This avoids production downtime due
to incorrect installation or removal,
CHEMICAL ENGINEERING WWW.CHEMENGONLINE.COM
JULY 2023
http://www.bronkhorst.com http://www.ashcroft.com http://www.chell.co.uk http://WWW.CHEMENGONLINE.COM
Chemical Engineering July 2023

Table of Contents for the Digital Edition of Chemical Engineering July 2023
