Chemical Engineering February 2017 - 26

Rotork plc
systems, and for fuel and lubricantpressure
sensing, leak detection,
filter testing and tank-level sensing.
The TPM instrument ensures a
±0.1% span non-linearity, hysteresis
and repeatability specification
over the full operating temperature
range, together with long-term stability
(±0.1% span per 12 months is
typical), says the company. A choice
of pressure ports and electrical connections
is available. - TT Electronics
plc, Weybridge, U.K.
www.ttelectronics.com
Self-contained instrument
improves pipeline safety
The Electronic Line Break (ELB;
photo) combines pipeline pressure
monitoring with intelligent valve control.
It continuously monitors upstream
and downstream pipeline
pressure dynamics to provide early
detection of pipeline breaks, and initiate
automatic valve actuator movement
to
an
emergency
position,
Pentair Valves & Controls
based on user-defined parameter.
Valve actuator control - selectable
as fail-close, fail-open or stay-put -
is based on rate-of-drop and rate-ofrise,
as well as high- and low-pressure
inputs. A remote process-shutdown
input with the option to override all
functions is also available to drive the
valve to the fail position. The device
includes an array of programmable
alarm and alert indications and other
configurable features. The ELB can
collect detailed operational data
to optimize performance and enhance
pipeline safety. - Rotork plc,
Bath, U.K.
www.rotork.com
Cashco
Pressure and vacuum valves
reduce emissions
The Anderson Greenwood 4000 Series
of pressure- and vacuum-relief
valves
(photo)
are compliant
with
Sensirion
26
the seventh generation API 2000
standard, which covers normal and
emergency vapor-venting requirements
for bulk-liquid storage tanks.
They are engineered to provide increased
flow capacities and will fully
open at 10% overpressure, helping
to protect tanks from physical damage
caused by internal pressure
fluctuations, says the company. As
a result, the valves can be set more
closely to a storage tank's maximum
allowable working pressure (MAWP)
or maximum allowable working vacuum
(MAWV), enabling users to fill
and empty tanks more quickly, and
operate them at higher pressures,
says the company. - Pentair Valves
& Controls, Houston.
www.valves.pentair.com
Back-pressure regulator is
available in five sizes
The Model BR back-pressure regulator
(photo) is available for a wide
range of gases and liquids. With the
appropriate options, applications include
upstream overpressure regulation
of cryogenic liquids, sour gas,
industrial gases and chemicals and
common industrial
fluids, such as
water, oil, steam and compressed air.
Available in globe or angular porting
configurations, the Model BR valve
controls inlet pressures up to 200
psig (13.8 barg), in multiple spring
ranges, and can be utilized for the
majority of industrial pressure-relief
applications. The back-pressure regulator
is available in five sizes, from
3/8 to 2 in., and can handle materials
from 20 to 400°F, with the appropriate
body/spring chamber and trim
material combinations. - Cashco,
Inc., Ellsworth, Kan.
www.cashco.com
Tiny differential-pressure
sensor opens up new worlds
The SDP3x sensor (photo) is the
world's smallest differential-pressure
sensor, measuring just 5 mm by 8
mm by 5 mm, according to its manufacturer.
It is reflow-solderable and
provides extended functionality, such
as multiple I2C addresses and interrupts,
and fast sampling time. It is
designed for high-volume, cost-sensitive
applications where size requirements
or constraints are essential
when measuring differential pressure
and mass flow. The digital, fully calibrated
and temperature-compensated
differential-pressure sensor is
available in different versions. For instance,
the digital SDP31 sensor and
the analog SDP36 sensor measure
bi-directional pressure differences up
to 500 Pa, while the digital SDP32
and the analog SDP37 measure bidirectional
pressure differences up
to 125 Pa. - Sensirion AG, Staefa,
Switzerland
www.sensirion.com
n
Suzanne Shelley
CHEMICAL ENGINEERING WWW.CHEMENGONLINE.COM
FEBRUARY 2017
http://www.valves.pentair.com http://www.ttelectronics.com http://www.cashco.com http://www.rotork.com http://www.sensirion.com http://WWW.CHEMENGONLINE.COM
Chemical Engineering February 2017

Table of Contents for the Digital Edition of Chemical Engineering February 2017
