Chemical Engineering December 2011 - 54

Focus
Yokogawa
locate maintenance resources
more effectively, while plant
engineers can use onboard
transmitter and sensor information
for more accurate
process analysis, leading to
greater plant efficiency.
All
HART variants of the STT250
are also compatible with the
HART 6 open standard, allowing
for an even greater level of
device health monitoring. The
new transmitters support other
open standards, such as the
Electronic Device Description
Language (EDDL) or certified
Device Type Manager files, for
fast startup and commissioning.
The STT250 also features TUV
SIL2 safety certification, allowing use
with safety applications that require
hot backups. - Honeywell Process Solutions,
Fort Washington, Pa.
www.honeywellprocess.com
Check and calibrate thermocouples
of 14 varieties
CL540ZA Series of thermocouple simulators
(photo) checks and calibrates
all thermocouple instruments. Units
can be connected directly to the thermocouple
inputs of smart transmitters,
programmable logic controllers
(PLCs), controllers and multichannel
recorders and to verify their outputs
or displays. Thanks to an easy-to-read
backlit display, readings are possible
even in the darkest areas of the plant.
The CL540ZA Series works with 14
thermocouple types: J, K, T, E, R, S, B,
N, G, C, D, L (J-DIN), U (T-DIN) and
P (Platinel II). - Omega Engineering,
Inc., Stamford, Conn.
www.omega.com
Rugged optical temperature
sensing built for control
The DTSX200 distributed temperature
sensor (photo, opposite page) takes the
optical measurement technologies this
vendor has acquired over the years in
the measurement field and applies
them to control applications, such as
pipeline and tank leak detection, refinery
vessel-reactor monitoring, and
fire detection. With the ability to have
stable operation in temperatures ranging
from -40 to 65°C, the DTSX200 is
ideal for use in harsh environments.
Omega Engineering
Moreover, with its low power consumption
of 16 watts or less,
it
can be easily powered by a solar
panel and battery if no other power
source is available. Meanwhile, it is
compact in size. - Yokogawa Corp.
of America, Newnan, Ga.
www.yokogawa.com/us
Temperature transmitters
do not need specialized RTD
cards
TTM Series temperature transmitters
feature an analog output that
eliminates the need for specialized
RTD PLC input cards, saving the
user the expense associated with
these cards. Particularly suitable
for use with sanitary requirements,
such as food and beverage applications,
the transmitters have stainless
steel connections. The TTM
Series provides a 4-20-mA output
using an integrated PT100 resistance
temperature detector. The sensors are
plug-and-play, and come pre-scaled at
0 to 100°C, 0 to 150°C, -50 to 50°C, or
-50 to 150°C. - Turck, Minneapolis,
Minn.
www.turck.us
Infrared measurement extended
to hotter temperatures
The MI3 Series infrared temperature-measurement
system has been
enhanced with MI3 1M and MI3 2M
high-temperature-sensing heads, extending
performance for non-contact
temperature measurement in high
temperature processes. The 1M and
2M heads provide a 1- and 1.6-µm
54 CHEMICAL ENGINEERING WWW.CHE.COM DECEMBER 2011
spectral response respectively, and
offer a wide measurement range of
500°C to 1,800°C (1 µm) and 250°C to
1,400°C (1.6 µm). Designed to deliver
high performance and flexibility at the
lowest installed cost per measurement
point, the MI3 Series is said to reduce
energy costs by allowing tighter process
control and more efficient process
heating. The sensing heads have a
120°C head ambient rating with 100:1
optical resolution and are available
with standard laser sighting. Potential
applications include silicon crystal
growth, polysilicon reactors, secondary
metal processing and metal heat
treating. - Raytek, Santa Cruz, Calif.
www.raytek.com
■
Rebekkah Marshall
http://www.honeywellprocess.com http://www.yokogawa.com/us http://www.omega.com http://www.turck.us http://www.raytek.com http://WWW.CHE.COM
Chemical Engineering December 2011

Table of Contents for the Digital Edition of Chemical Engineering December 2011
