IRmax is an ultra-compact infrared (IR) gas detector that delivers rapid, fail-safe detection of hydrocarbon gases and vapours. The IRmax gas detection system offers the choice of a detector only, a local gas/status display, a remote gas/status display or non-intrusive calibration via an I.S. calibration tool or hand-held HART communicator.

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Quick Overview

Overview

The reliability of IRmax has been proven in hot, cold, wet and saline environments, making it ideal for offshore.
IRmax's unique optical components are treated with a highly durable coating that completely prevents faults due to condensation. As IRmax contains no components for artificially heating optical surfaces, power consumption is dramatically reduced, requiring only 1W of power.

Simple to install

Compact size - requires less space, effort and time to install
Various installation options - can be wall mounted, fitted to a 50mm (2 inch) pipe or connected to an auxiliary junction box using a choice of mounting accessories
Industry standard 4-20mA output - compatible with virtually any control system
Options for HART communications and RS-485 Modbus

Easy maintenance

Remote non-intrusive calibration - the IR display can be mounted up to 30 metres from the IRmax and test gas can be applied without requiring direct access to the detector
Hand-held Intrinsically Safe (I.S) calibrator - IRmax detectors fitted with an I.S barrier module can be checked and calibrated using an I.S calibration accessory
STAY-CLIR optics - prevents condensation on optical components

Low cost of ownership

Low power - only consumes 1W of power, enabling small power supplies and battery back-up systems to be used
Automatic optical obscuration monitoring - minimal routine maintenance keeps costs down
Annual proof-test interval

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Details

	IRmax	IRmax with Fixed IR display	IRmax with IS Barrier Module	Remote IR Display
Size	158 x 75 x 57mm (6.2 x 2.9 x 2.3ins)	230 x 75 x 57mm (9 x 2.9 x 2.3ins)	261 x 75 x 57mm (2.3 x 2.9 x 2.3ins)	60 x 54 x 48mm (2.3 x 2.1 x 1.9ins)
Weight	1.58kg (3.5lbs)	2kg (4.4lbs)	2.4kg (5.3lbs)	0.2kg (0.4lbs)
Ingress protection	IP66
Enclosure material	316 stainless steel
Power	12-30 Vdc. < 1W
Connection	One M20 or 1/2” NPT cable gland entry
Electrical output	4-20mA current sink or source 2mA dirty optics warning (at 75% obscuration, configurable) 0mA detector fault signal (at 90% obscuration, configurable) RS-485 Modbus (optional), HART 7 (optional)
Operating temperature	-40°C to +75°C (-40°F to 167°F)
Humidity	0 to 100% RH non-condensing
Pressure range	Atmospheric +/- 10%
Repeatability	+/- 2% FSD
Zero drift	+/- 2% FSD per year maximum
Response time	T-90 <4 seconds
Performance	Complies with EN60079-29-1
Functional safety	Validation to IEC61508:2010, EN50402:2005 SIL 2
Approvals	Ex II 2 GD Exd IIC T6 Gb (Tamb -40to+50°C), T4 (Tamb -40to+75°C) Ex tb IIIC T135°C Db (Tamb -40 to +75°C)	Ex II 2 G Exd ia IIC T4 Gb (Tamb -40to+75°C)		Ex II 2 GD Exd ia IIC T4 Gb (Tamb -40to+75°C) Ex tb IIIC T135°C Db (Tamb -40 to +40°C)
EMC compliance	EN50270:2006, FCC CFR47 Part 15B, ICES-003
Zones	Certified for use in Zone 1 & 2, and Zone 21 & 2 hazardous areas