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Information Technology (IT) at the component level! An
Infrared (IR) Combustible Gas Sensor Module is
network-enabled to provide the interface needed to your
plant-wide control system, whether it be 4-20 mA,
Modbus, HART, relay contacts or SentryBus. This USA-
made, stand-alone smart gas sensor module is loaded
with features you need. As usual, Sierra Monitor A gas
detector with a Sierra Monitor pedigree, Factory Mu-
tual approved and ready to Manage Your Gas Risk.
The 5100-28-IT provides all the built-in features desired
by instrumentation and safety professionals, including:
FM Approval for performance and safety
•
SIL-2 Certified
•
•
Modbus RTU RS-485 interface
4-20 mA output
•
HART interface
•
•
SMC Sentry digital bus interface
Optional Integral 8 AMP alarm relays – Alarm,
•
Warning
Aluminum or 316 Stainless Steel enclosure
•
•
Annual calibration frequency
•
%LEL or % volume
Interface to multiple protocols
•
Integral scrolling LED display
•
•
Optional remote sensor
The 5100-28-IT can be used as a 4-20 mA component
or as a Modbus RTU node. For higher level system
capability the module can interface directly to Sierra
Monitor's Sentry Controller. As part of a Sentry system
the user gains capability of system Modbus serial com-
munications, extensive diagnostic features, area and
zone alarm management, WebServer interface and mul-
tiplexing sensor connections.
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Sierra Monitor Corporation 1991 Tarob Ct. Milpitas, CA 95035 USA (408) 262-6611 (800) 727-4377 Fax: (408) 262-9042
Visit our website: www.sierramonitor.com
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Factory Mutual (FM) Approval for performance, electri-
cal safety and environmental parameters including Class
I,
Div. 1, Groups B, C, D and Class I, Zone 1, Group
IIC. The 5100-28-IT is also SIL-2 Certified and meets
NFPA-72 requirements for gas detectors.
How It Works
Most combustible gases absorb infrared light energy at
defined wavelengths, providing an absorption signature
for that gas. The principle of an infrared detector is based
upon the absorption of the infrared light at a specific wave-
length as it passes through the gas. The more of the ab-
sorbing gas that is present, the more light is absorbed.
The detector measures the energy from an infrared light
beam at a wavelength that is absorbed by the gas and
compares it to the energy emitted by the source. The dif-
ference in energy received by the detector indicates the
level of gas in the atmosphere.
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E-mail: sales@sierramonitor.com
Sentry
IT
Gas Sensor Module
IT
Combustible - Infrared
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Related Manuals for Sierra Monitor Corporation Sentry 5100-28-IT
Summary of Contents for Sierra Monitor Corporation Sentry 5100-28-IT
- Page 1 . v i f i t Sierra Monitor Corporation 1991 Tarob Ct. Milpitas, CA 95035 USA (408) 262-6611 (800) 727-4377 Fax: (408) 262-9042 Visit our website: www.sierramonitor.com Factory Mutual (FM) Approval for performance, electri- cal safety and environmental parameters including Class Div.
- Page 2 Sierra Monitor Corporation 1991 Tarob Ct. Milpitas, CA 95035 USA (408) 262-6611 (800) 727-4377 Fax: (408) 262-9042 Visit our website: www.sierramonitor.com Combustible Gas Sensor Module f i t...
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