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New 40/40 Series Flame Detectors
from Spectrex
Although gas detection systems are more
common, flame detection equipment is increasingly
used in critical applications where immediate
and reliable detection of fire and flame
can save lives and protect high value equipment
and facilities. New SharpEye 40/40 series
flame detectors from Spectrex are designed
to operate under the most demanding conditions
to detect hydrocarbon, hydrogen, silane and
other specialized flame sources.
SharpEye flame detectors use a combination
of Ultraviolet (UV) and Infrared (IR) sensors
in combination with specialized signal processing
to maximize sensitivity and response time
while minimizing false alarms. Triple IR
detectors for hydrocarbon flames, such as
the 40/40I, combine moderate speed and high
sensitivity with the highest immunity
to false alarms. UV/IR detectors, such as
the 40/40L or 40/40LB can detect hydrocarbon,
hydrogen, ammonia, silane and metal-fueled
flames but can be blinded by thick smoke
and oil or grease deposits on the detector
window. Single IR detectors such as the 40/40R
provide lower cost detection for indoor applications but
at an increased risk of false alarms due
to welding or sunlight reflection from polished
surfaces. Specialized detectors, such as
the 40/40M, are designed to detect both invisible
hydrogen flames and visible hydrocarbon flames.
Flame detector output options include
4-20mA with HART, RS-485 MODBUS and relay
contacts. Each detector can be factory programmed
for specific situations, including sensitivity,
delay time, alarm latching, built-in self
test and more.
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New Product Overview: CR-16 / 32 Remote Display
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In many applications, the primary gas
detection system controller is mounted in
a control room panel or equipment rack.
While convenient for process operators, often
there are other locations, such as rig drilling
floors or secondary control rooms where real-time
display of gas readings enhances safety and
improves time of response for critical emergencies.
The new GDS Corp CR-16/32 Remote Controller
Display connects to one or two C1 Protector sixteen
channel controllers via RS-485 MODBUS and
displays gas readings, tags, relay status
and alarm conditions in real time. No programming
is required; all pertinent information on
channel configuration, ASCII tag
names and engineering units, range and alarm settings are
automatically read from the C1 controller's
MODBUS database. The CR-16 also provides
a convenient way to access the C1 Protector's
MODBUS database via the Ethernet, using the
Windows-based ProtectorView display and data
logging software.
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GDS Corp Welcomes New Sales
Representatives
Antel
Corporation
(Northern Il, Western
Indiana)
649 Executive Drive,
Willowbrook, IL 60527
630-887-8910
BurnsCascade
(New York & all New
England)
Syracuse, NY Office
400 Leavenworth Avenue,
Syracuse, NY 13204
315-422-0261
895 Kennedy Memorial
Drive, Oakland, ME 04963
207-465-7477
Global
Unions Industrial Support Services Est
(Saudi Arabia, Iraq, Kuwait, Bahrain,
Qatar, UAE)
Jubail City Office
P.O. Box 2874, Jubail City, KSA 31951
966 3 356 0606
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GDS Corp Key Contacts
Admin
Dana Simmons, (409)
927-2980 x111
Operations
Chuck Springer,
(409) 927-2980
x 114
Production
Robert Lambert, (409)
927-2980 x112
Dave
Schuler, (409) 927-2980 x115
Bob Bierzynski,
Regional Sales Manager, (704) 258-9594
Tibor Cseszko,
Regional Sales Manager, (832) 704-8865
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Calibration Challenges
An essential element in the successful
commissioning and safe operation of any gas
detection system is proper calibration. Specifically,
calibration ensures that the sensor, transmitter
and controller correctly react to the target
gas with verifiable readings that are traceable
to some recognized reference.
Calibration Gases
In general, calibration gas can
be considered to be toxic or combustible,
although some gases, such as ammonia and
carbon monoxide are both toxic at low levels
and combustible at higher concentrations.
Common cylinders of combustible gases used for
calibration purposes are typically stable,
high concentration mixtures (~ 2.5%) that
maintain their concentration as cylinder
pressure drops, providing accurate readings
and a long shelf life.
Toxic gases, on the other hand, are
often highly reactive, low ppm-level mixtures
that require careful handling and close attention
to shelf-life limitations.
For most applications, a gas flow rate
of between 0.5 and 1.0 liters / minute is
required. For highest accuracy, a calibration
cup that encloses the entire sensor head
should be used to ensure a consistent supply
of calibration gas actually reaches the sensor.
Gas Generators
For certain highly reactive gases such
as chlorine or chlorine dioxide, the accuracy
and concentration of bottled mixtures begins
to decay quite rapidly. When you consider
that most chlorine applications are in the
5 to 10 ppm range, it doesn't take long for
the concentration of bottled chlorine to
drop below 3 ppm, making it impossible to
calibrate properly. In these cases it often
makes good sense to use a calibration generator.
Gas generators create a fresh flow
of calibration gas by mixing two or more
inert materials held in a replaceable cell.
Unlike bottled mixtures, the ppm-level output
of some gas generators can be adjusted for
both concentration value and flow rate.
Recommendations
GDS Corp can provide both cylinder-based
calibration kits and gas generators. When
considering your calibration needs, please
consider the following:
Order a mixture that
is approximately 50% of full scale
Ensure that the mixture
is at least
+/- 2% or better
Require that the
mixture or generator have NIST-traceability.
Keep track of shelf
life and discard any gas that has expired.
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SERVICES
