Chemical Engineering March 2016 - 39

gage glass, remote level indicators,
magnetic water-level gages, and water-column-isolation
shutoff valves. It
incorporates the 2015 ASME Code
changes and CSD-1 requirements,
as well as recommendations from
Section 7. The handbook also lists
the most common non-compliant
drum-level equipment arrangements
and suggests alternative solutions,
says the company. Its size, spiral
binding and laminated pages make it
appropriate for in-plant reference and
referral. It is available free of charge
to qualified recipients. - Clark-Reliance,
Strongsville, Ohio
www.boilerinspectionguide.com
Electronic level sensor detects
changes in buoyancy
The Magnetrol Digital E3 Modulevel
Displacer Level Transmitter (photo)
is a liquid level-measurement and
control device for a variety of CPI applications.
The electronic-displacer
level-transmitter technology detects
and converts changes in buoyancy
force, caused by a change in liquid
level, into a stable output signal.
These forces act upon the springsupported
displacer, causing vertical
motion at the core within the Macro
Sensors' linear variable differential
transformer, says the company. As
the core position changes with liquid
level, voltages are induced across
the secondary windings of the sensors.
These signals are processed
in the electronic circuitry and used
to control the current in the 4-20mA
current loop. - Macro Sensors,
Pennsauken, N.J.
www.macrosensors.com
Open-architecture wireless
system enables sensor choice
Monitoring level in tanks is a common
wireless application, and when
used in upstream pumping, oil-andgas,
wastewater and other industrial
applications, it can help to eliminate
run-outs and overflows while optimizing
and ensuring the integrity of
the operations. The SignalFire Remote
Sensing System (photo) integrates
an open architecture mesh
network, which allows users to
choose the preferred sensor type
for an application, and to mix different
sensor types in the same network.
By comparison, most tank
level-monitoring systems limit sensor
choice, says the company. Depending
on the conditions of the operating
environment and tank contents,
the ideal sensing technology might
be a float device, pressure sensor,
ultrasonic sensor, piezoresistive sensor,
or one based on air-guided wave
radar. The SFRSS communicates
with and powers virtually any sensor
with a 4-20-mA, 1.5-V, Modbus,
HART, digital I/O and other analog
and digital interfaces, says the company.
In a typical application, the
SignalFire wireless nodes interface
with a standard sensor, providing
power for the sensor and connectvity
to a gateway located at a
central location where the data are
concentrated. Because the SFRSS
mesh network operates at lower
frequencies, it can communicate
at ranges of up to 3 miles between
nodes, and it is significantly less sensitive
to foliage, obstructions and
moisture when compared to traditional
wireless sensors, according
to the manufacturer. - SignalFire,
Hudson, Mass.
www.signal-fire.com
Macro Sensors
Electronic level sensor detects
changes in buoyancy
The Total Tank Level Measurement
System (photo) incorporates magnetostrictive
sensing technology and
multivariable functionality. The system's
digital Modbus output measures
total level, interface level and
temperature from an explosion-proof
housing. The system features five
temperature-sensor outputs, distributed
over the active length of the
system's polymer and stainless-steel
probe. The rugged and flexible probe
is available in lengths up to 50 ft. It
is also available in a rigid Type 316
stainless steel version. The system's
intrinsically safe, explosion-proof
design and all-welded construction
makes it suitable for use in oil-andgas,
chemical and petrochemical
storage tank and inventory-control
applications, says the company. It
has an accuracy of 0.01% of measured
span (less than 1 mm absolute),
over the full measurement
range. It meets FM and FMc hazardous-area
approvals and requires
minimal maintenance. - Ametek
Drexelbrook, Horsham, Pa.
www.ametek.com
n
Suzanne Shelley
ChemiCal engineering www.Chemengonline.Com marCh 2016
Ametek Drexelbrook
39
SignalFire
http://www.boilerinspectionguide.com http://www.signal-fire.com http://www.macrosensors.com http://www.ametek.com http://www.Chemengonline.Com
Chemical Engineering March 2016

Table of Contents for the Digital Edition of Chemical Engineering March 2016
