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Crowcon Cirrus Point Infrared Detector Carbon Dioxide - 0.5%, 2%, 3%, 5%
Item #:
C01692
Brand:
Crowcon
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Cirrus Infrared Flammable Gas Detector
Crowcon Detection Instruments operates worldwide with the mission to protect people and plant from gas hazards. With over 40 years of gas detection experience, Crowcon consistently develops cutting edge technology and detection systems that are reliable and innovative. The company offers a wide range of gas detection devices to suit a variety of personal and industrial gas detection needs.
With its lifetime factory calibration and 5 year guarantee, Crowcon is pleased to introduce its rugged and reliable Cirrus gas detector. Cirrus is Crowcon’s third generation fixed point infrared flammable gas detector. The unit requires very little maintenance and has a fully automatic remote functional test capability that does not require local detector checks. Additionally, the unit is flexible enough to interface with a variety of new or existing systems.
Rugged and Reliable
When in potentially hazardous environments, workers need to feel safe and secure with their equipments integrity and reliability. The Cirrus infrared flammable gas detector provides that assurance. The unit features two beams for accurate readings and detection. One beam is utilized as the baseline and continuously checks the operation of the optics while providing a continuous zero measurement for the hydrocarbon detecting beam. Through this mechanism, drifts in the infrared source are compensated. The unit is housed in a durable stainless steel case that provides optimal protection from the elements and hazardous working conditions. Additionally, Cirrus is guaranteed for 5 full years.
Low Maintenance
One of the most important characteristics of the Cirrus infrared flammable gas detector is its low maintenance requirements. First and foremost, the docking station for the unit allows for easy installation and system changes. Once installed, configuration changes are easily made by connecting a computer to the control room. This also allows for easy field configurations. Cirrus also features a factory calibration that will last for 5 years. It will never require a zero or span gas calibration. The unit also operates up to 90% obscuration. When the device reaches the preset obscuration level, it will notify users that it is time for a cleaning.
Flexibility
Cirrus can be fitted with a number of accessories, testers, and interfaces to improve performance and customization. A fitted automatic drop-in filter would alleviate manual or local functional testing. Other interfaces would allow for easy testing when the device is inaccessibly located. The device may also be outfitted with accessories and interfaces that increase its compatibility with existing field cabling and control panels. The unit can easily interface with new, existing, or distributed control systems. Each control system may require a separate, but easy to install, compatibility accessory for optimal performance.
Specifications
- The unit detects hydrocarbon gases in the 0-100% LEL range by infrared absorption.
- Utilizes a dual beam, dual wavelength, and dual detector optical system.
- The entire device is approximately 9.5 x 5.2 x 7 inches.
- Response time of less than 10 seconds.
- Weighing in at 15.4 pounds, this stainless steel detector is operational in temperatures ranging from -40 degrees Fahrenheit to +149 degrees Fahrenheit and in humidity conditions between 0 and 99%.
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 |
Optical performance | Correct operation with up to 90% obscuration ‘Dirty optics’ warning over 75% obscuration (configurable) Heated window avoids condensation |
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 |
Repeatability | ±2% |
Construction | Stainless steel 316 ANC4 Weight: 7kg (15.4 lbs) |
Temperature range | -40°C to 65°C (-40°F to 149°F) |
Humidity range | 0-99% relative humidity Non condensing |
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)) |
Standards | EN50014, EN50018, UL2279 |
Ingress protection | IP66 (jets of water) IP67 (submersion) |
General immunity | Totally immune to sunlight and all catalyst poisons |
RF radiation | Tested to EN55022 class B and meets EN50081-2 |
RF immunity | Tested to IEC801-3 and meets EN50082-2 |
Warranty | 5 years |
Gases detected by Cirrus | Methane, other alkanes, alkenes, ketones, alcohols, carbon monoxide, carbon dioxide, aldehydes |