IRmax

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.

The reliability of IRmax has been proven in hot, cold, wet and saline environments, making it ideal for offshore.

IRmax's unique Stay Clir 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

Specification

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

Download

Certificate	Datasheet	Manual
ATEX Certificate (Auxiliary Junction Box)	IRmax – European English	IRmax Manual – Multi language (Issue 6th October 2017)
ATEX Certificate (Spigot gland)	IRmax – US English (Letter size)	IRmax MODBUS Map 485 Manual (Issue 6 – Jan 2020)
IECEx Certificate (Spigot gland)		IRdisplay (Multi Language)
SIL Certificate IRmax		GLC-046X IR-Display HART Field Device Specification
ATEX Certificate Issue 5 – IRMAX (no display)		GLC-070X IRmax HART Field Device Specification
ATEX Certificate Issue 6 – IRMAX (with display)		IRmax & IREX Accessories Manual Issue 3 Jan 16
IECEx Certificate Issue 6 – IRMAX (no display)
IECEx Certificate Issue 7 – IRMAX (with display)
IECEx Certificate (Auxiliary Junction Box)