Cirrus Infrared, Fixed Point, Dual Wavelength Flammable Gas
Detector Provides Simple Installation, Ultimate Flexibility and Proven
Stability...
Crowcon Cirrus gives customers total
reliability ensuring accurate and safe gas detection. Cirrus is a
fixed point, dual beam, dual detector that provides factory calibration
lasting for 5 full years. Crowcon Cirrus Offers connection flexibility with
both 4-20 mA and RS485 outputs and addressable gas detectors can be looped
together via the Modbus serial link giving the user interrogation and remote
control capability.
Rugged, Reliable and Reasonable...
This third generation gas
detection instrument not only comes with a lifetime
factory calibration, but if also covered by a
comprehensive 5 year warranty. Cirrus's rugged,
stainless steel case is designed for continuous
operation in the harshest environments. The
reliable Cirrus is certified flameproof and provides
users the accuracy and speed of response that are
essential to safe gas monitoring.
Easy installation...
The unique technology of
Cirrus simplifies both gas detection instrument
installation and system changes. During
installation the docking station is sited and wired up
with the detector head being fitted later during
commissioning. Depending upon the system
configuration, future configuration changes can be made
by simply connecting a PC to the control room.
Cirrus features no moving parts, dual wavelength,
extensive fault monitoring and provides easy field
reconfiguration. |
Crowcon Cirrus
Infrared Gas Detector
Call for Price
FREE U.S. Shipping
1-877-688-2703
Front View of Cirrus Infrared Gas
Detector
Side View of Cirrus Infrared Gas
Detector
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Cirrus Features...
-
Cirrus does not require
zero or gas span calibration
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Optical system functions
up to 90% obscuration
-
Crowcon's
technologically advanced "Fuzzy Optics" help
increase accuracy and reduce zero drift
-
Meets Ingress Protection
standards of IP66(jets of water) IP67(submersion)
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Modbus RS485 serial link
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40 gas calibrations
available plus C02
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Can interface with any
standard control system or combinations of systems
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MIL Handbook
217f/2/12/91 gives Cirrus a MTFB (Mean Time Before
Failure) of 8.6 years,
including IR source
-
Can be fitted with
automatic drop-in filter, eliminating manual or
local functioning testing
Cirrus' durable design and
innovative features make it particularly suitable for
the harsh environments of offshore applications as
arduous conditions can cause difficulties for the
traditional pellistor method. Cirrus is
manufactured by Crowcon, a worldwide leader in
gas leak
detection equipment for over 35 years. Crowcon
products offer the customer reliable, sophisticated
protection with easy, user friendly operation.
Cirrus can interface with any
standard control system,
or combination of systems, new or old.
 Docking
station connects
Cirrus to all services.
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Cirrus Specifications... |
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Dimensions |
240 x 130 x 175 mm (9.5 x
5.2 x 7 inches) |
|
Function |
Detection of hydrocarbon
gases in the 0-100% LEL range, by infrared absorption |
|
Optical System |
Dual beam, dual wavelength,
dual detector |
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Optical performance |
Correct operation with up to
90% obscuration
‘Dirty optics’ warning over 75% obscuration
(configurable)
Heated window avoids condensation |
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Operating voltage |
18-32 V dc (nominal 24 V),
4 W maximum |
|
Typical output signals |
All levels configurable:
0 mA: fault
2 mA: dirty optics
4-20 mA: 0-100% LEL
22 mA: over range |
|
Communications |
Modbus RS485 serial link |
|
Functional testing |
- automatic
- flow adaptor for gassing |
|
Response time |
T90 < 10 seconds (including
weatherproof cover)
4-6 seconds instantaneous release of gas at high
concentrations |
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Repeatability |
2% |
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Construction |
Stainless steel 316 ANC4
Weight: 7kg (15.4 lbs) |
|
Temperature range |
-40°C to 65°C (-40°F to
149°F) |
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Humidity range |
0-99% relative humidity
Non condensing |
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Approval codes |
Class 1, Zones 1 & 2
EExd IIC T6 (Tamb < -40°C to 65°C (-40°F to 149°F))
EExd IIC T5 (Tamb < -40°C to 80°C (-40°F to 176°F)) |
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Standards |
EN50014, EN50018, UL2279 |
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Ingress protection |
IP66 (jets of water)
IP67 (submersion) |
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General immunity |
Totally immune to sunlight
and all catalyst poisons |
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RF radiation |
Tested to EN55022 class B
and meets EN50081-2 |
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RF immunity |
Tested to IEC801-3 and meets
EN50082-2 |
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Warranty |
5 years |
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Gases detected by Cirrus |
Methane, other alkanes,
alkenes, ketones, alcohols, carbon monoxide,
carbon dioxide, aldehydes
(40 gas calibrations available. Please contact Crowcon
for further details) |
See our entire line of
Fixed Gas Monitors
or read about all
Gas Monitors.
If you have
any questions, call us toll free, we'll be glad to help!
1-877-688-2703
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