Chemical Engineering May 2017 - 32

the OnGuard Smart also monitors
temperature and relative humidity.
Most importantly, copper and silver
corrosion corresponding to ISA Standard
71.04-2013 is measured via this
company's Quartz Crystal Microbalance
(QCM) sensors. The OnGuard
Smart can also alert an operator to
a potential failure of electronics so
action can be taken before failures
occur. Data-logging and reporting
capabilities provide diagnostic data
to pinpoint problem areas or times so
that issues can be resolved quickly.
System data are captured in realtime,
and are accessible remotely. -
Purafil, Inc., Doraville, Ga.
www.purafil.com
Gas metering for extruded
plastic foam production
The Plastinum DSD 400 gas-metering
system (photo), designed for extruded-plastic-foam
manufacturing,
provides
precise amounts of liquid
CO2 or gaseous N2 during the extrusion
process to help optimize foamLinde
constant
rate at speeds up to 66 lb/h
(30 kg/h). The system features a highperformance
compressor, mass flowmeters
and a dynamic control valve,
and its lightweight and compact design
simplifies installation. - Linde
LLC, Bridgewater, N.J.
www.lindeus.com
ing and reduce density. The system's
ability to quickly react to constantly
changing pressure fluctuations at
the extruder enables stable extrusion
processes and delivers
consistent
foam structures during continuous
extrusion foaming, says the manufacturer.
This allows users to minimize,
or sometimes even eliminate, the use
of flammable hydrocarbons. The DSD
400 handles pressures up to 5,081
psi (400 bars) and can pump liquid
CO2 through the control valve at a
This new NOx analyzer has an
internally cooled sensor
The accuracy of an NO gas sensor,
the primary component of NOx, can
be compromised when exposed to
ambient temperatures above 86°F
(30°C) and significantly more so
above 104°F (40°C). To help prevent
this temperature effect on the
NO sensor, the E8500 Cooled NOx
portable emissions analyzer (photo,
p. 33) keeps the NO sensor cooled
with an internal cooling system. The
analyzer measures, displays and records
the NO sensor temperature to
make it easier to comply with conditional
test methods. The E8500
Cooled NOx also comes standard
MONITOR VISCOSITY SIMPLY
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* No holes in tanks or pipes
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VERSATILE
* One size adjusts to motors, from
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* Works on 3 phase, fi xed or variable
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CONVENIENT OUTPUTS
* For meters, controllers, computers
4-20 milliamps 0-10 volts
PROFILING A PROCESS
* Power changes refl ect viscosity changes
* Good batches will fi t the normal " profi le " for
that product
24
22
20
18
16
14
12
10
8
6
4
2
BATCH 1
BATCH 2
BATCH 3
POWER DECREASE
SHOWS BATCH
IS DONE
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Circle 25 on p. 90 or go to adlinks.chemengonline.com/66428-25
32
CHEMICAL ENGINEERING WWW.CHEMENGONLINE.COM MAY 2017
http://www.lindeus.com http://www.purafil.com http://WWW.LOADCONTROLS.COM http://adlinks.chemengonline.com/66428-25 http://WWW.CHEMENGONLINE.COM
Chemical Engineering May 2017

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