Chemical Engineering July 2013 - 24

BinMaster
FOCUS ON
Level Measurement
Precision Digital
Vega Grieshaber KG
Reliable switching
down to -196°C
The Vegaswing 66 vibrating level
switch (photo) is said to be the first of
a kind for extreme temperatures. Especially
suitable for cryogenic liquids,
the device switches reliably in process
temperatures from -196 to 450°C, and
operates at pressures from vacuum to
160 bars. The level switch offers increased
protection and safety for gasliquefaction
plants and liquefied gas
tanks used for processing, transporting
or storing liquefied natural gas
(LNG) or liquid nitrogen. The device
has standard approval for explosion
protection according to ATEX and FM,
as well as for use on ships and offshore
platforms. - Vega Grieshaber KG,
Schiltach, Germany
www.vega.com
Corrosive environments are
not a problem for these meters
Launched in February, the Optiwave
5200 C/F is a new 10 GHz FMCW (frequency
modulated, continuous wave)
radar level meter (photo) for liquid
applications up to 300-m measuring
range. The two-wire,
loop-powered
device measures level and volume
Krohne Messtechnik
in storage or process tanks with process
temperatures up to 250°C and
pressures up to 40 bars. The unit has
been designed and developed for use
in SIL-2 safety-related systems according
to IEC 61508. The polypropylene
(PP) and polytetrafluoroethylene
(PTFE) Wave Horn antennas are process
sealed by their antenna material
instead of a traditional O-ring seal
construction. These gasket-free antennas
are therefore suited for extreme
corrosive environments, says the company.
The new meter is compliant with
requirements such as SIL and Namur
recommendations NE 107, 21, 43 and
53, and offers a 4-20-mA HART communication
with dedicated PACTware
DTMs. - Krohne Messtechnik GmbH,
Duisburg, Germany
www.krohne.com
This explosion-proof meter
displays level and volume
The PD6801 ProtEX F&I Level Meter
(photo) is an easy-to-read, explosionproof
meter designed for safe or hazardous
environments, such as oil wells
or chemical storage. The 4-20-mA
loop-powered input displays level in
feet and inches; a second line shows
24 CHEMICAL ENGINEERING WWW.CHE.COM JULY 2013
volume, percent or a custom label. The
meter also features a 20-segment tanklevel
indicator that displays the height.
The meter is optimized for wide-angle
viewing of about 80 deg. The meter has
FM, ATEX, CSA and IEC Ex approvals,
and is housed in a cast-aluminum
NEMA 4X enclosure. - Precision Digital
Corp., Hollister, Pa.
www.predig.com
This capacitance probe is
fl exible for tight fi ts
This bendable capacitance probe
(photo) is designed to fit into tight
spaces or in vessels where obstructions
prevent the installation of a
straight probe. The probe can be bent
to avoid obstructions in a vessel while
still allowing adequate probe surface
area to confirm the presence or absence
of material. Mounted on the side
of the bin, the bendable probe can be
used in a wide range of solid materials
or slurries. These capacitance probes
work at 6 kHz - far below the radiofrequency
(RF) level of 9 kHz - and
will not interfere with two-way radios
or other equipment operating in the
radio spectrum, says the company.
Standard probes feature a triple
http://www.predig.com http://www.krohne.com http://www.vega.com http://WWW.CHE.COM
Chemical Engineering July 2013

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