Crowcon Gas-Pro IR

The Crowcon Gas-Pro IR completes the Gas-Pro range and gives greater flexibility for sensor selection in this 5-gas multigas detector. The infrared measurement gives improved reliability and measures gas in two different wavelengths: one that absorbs gas and the other does not. With little chance of being poisoned, the Gas-Pro IR is inherently safer and saves the need of regular and expensive pellistor replacement when used in likely contaminated environments. The Gas-Pro Range is known for its simple use and functionality as well as easy testing and calibration.

IR Technology

Infrared emitters within the sensor each generate beams of IR light. Each beam is of equal intensity and is deflected by a mirror within the sensor on to a photo-receiver, which measures the level of IR received. The “measuring” beam, with a frequency of around 3.3μm, is absorbed by hydrocarbon gas molecules, so the beam intensity is reduced. The “reference” beam (around 3.0μm) is not absorbed, so arrives at the receiver at full strength.

The %LEL of gas present is determined by the difference in intensity between the beams measured by the photo-receiver. IR sensors are reliable in some environments that can cause pellistor-based sensors to function incorrectly or in some cases fail:

In some industrial environments, pellistors are at risk of being poisoned or inhibited. This leaves worker on their shift unprotected. IR sensors are not susceptible so significantly enhance safety in these conditions. Exposure to high levels of flammable gas can cause “sooting” of pellistors, reducing their sensitivity and potentially leading to failure Pellistors require oxygen to function. However, IR sensors can be relied on in applications such as fuel storage tanks where there is little or no oxygen, due to flushing with inert gas prior to maintenance or which still contain high levels of fuel vapours. The fail-safe nature of IR sensors, which automatically alert you to any fault, provides an additional layer of safety. Gas-Pro IR measures in %LEL and has been certified for use in hazardous areas as defined by both ATEX/IECEx and UL.

User Friendly

• Top mount display – makes it easy to read at a glance
• Simple single button operation – can be used whilst wearing gloves
• Intuitive functionality – reduces training time

Adaptable

• Monitor 5 gases in many different combinations
• Pumped and diffusion solutions – – offers multiple uses within one compact detector

Multiple languages

• Automatic fail-safe flow plate recognition – takes away the pain of pre-entry testing
• Specific and unique Pre-Entry Check (PEC) mode

Reliable

• Reliable lithium-ion battery – provides over 14 hr use from a 7.5 hr charge
• Water and dust resistant to IP65 and IP67 – capable of withstanding harsh environments
• Bump and calibration reminders – Full compliance

Size	43 x 130 x 84mm (1.7 x 5.1 x 3.3ins)
Weight	309g 4 gas (10.8oz)/ 340g pumped (11.9oz) 333g 5 gas (11.7oz)/ 362g pumped (12.7oz)
Alarms	Audible >95dB @ 30cm (98dB @30cm in loud mode) Visual – all angle dual red/blue LEDs Vibrating alert
Display	Top mount for ease of view with dual colour backlight (green/red)
Data logging	125 hr at 10-second intervals (45,000 logs)
Event logging	Alarm, over range, calibration, bump, on/off, TWA, 1000 events
Battery	Rechargeable Li-ion, >14 hr (13 hr pumped operation) based on CH4, O2, H2S, CO Typical charge time 7.5 hr
Sampling	Internal pump as option
Operating temperature	-20°C to +55°C (-4°F to +131°F)
Storage	-25°C to +65°C (-13°F to +149°F)
Humidity	10 to 95% RH
Ingress protection	Independently tested to IP65
Approvals	IECEx: Ex db ia IIC T4 Gb Tamb -20°C to +55°C ATEX: II 2 G Ex db ia IIC T4 Gb Tamb -20°C to +55°C UL: Class 1, Division 1, Groups A, B, C, and D UL 913, UL 60079-0 and UL 60079-11 INMETRO: Ex db ia IIC T4 Gb Tamb -20°C to +55°C Marine Equipment Directive: MED 1500009
Compliance	FCC and CE Complies with EMC Directive 2014/30/EU EN50270 and ICES-003
Interface	Data connection for gas test solutions and direct to PC
Charging	Direct connection to multiregional power supply Vehicle charger adaptor Desktop cradle USB power and communications lead
Crowcon Connect Compatible?	Yes

Gases and Ranges

Gas	Range	Typical Alarms	Resolution
PID	0-1000ppm	50ppm	1ppm
Ammonia (NH3)	0-100ppm	25ppm	1ppm
Carbon dioxide (CO2)	0-5% vol.	0-5% vol.	0.01% vol.
Carbon monoxide (CO)	0-2000ppm	30ppm	1ppm
Carbon monoxide (CO)	0-500ppm	30ppm	1ppm
Carbon monoxide (hydrogen filtered)	0-2000ppm	30ppm	1ppm
Chlorine (Cl2)	0 – 5ppm	0.5ppm	0.1ppm
Dual toxic (CO-H2S)	H2S 0-100ppm CO 0-500ppm	5ppm 30ppm	1ppm 1ppm
Flammable	0-100% LEL	20% LEL	1% LEL
Hydrogen sulphide (H2S)	0-100ppm	5ppm	1ppm
Nitrogen dioxide (NO2)	0-20ppm	1ppm	0.5ppm
Oxygen (O2)	0-25% vol.	19% / 23% vol.	0.1% vol.
Ozone (O3)	0-1ppm	0.1ppm	0.01ppm
Sulpher dioxide (SO2)	0-20ppm	1ppm	0.1ppm
Chlorine dioxide (ClO2)	0-1ppm	0.1ppm	0.1ppm
Nitric oxide (NO)	0-100ppm	25ppm	1ppm