irmax detector
irmax detector with remote

Crowcon IRmax Infrared Gas Detector

Code: IRmax
  • IR Point Combustible Detector
  • Low maintenance
  • Fail-safe operation

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The Crowcon IRmax is an infrared gas detector for hydrocarbon gases and vapours. There is a choice of models; detector only, detector including a display, remote display version or non-intrusive calibration via an I.S. calibration tool or hand-held HART communicator.

All models have a 4-20mA analogue output ensuring compatibility with control systems. In addition, there is an option for RS-485 Modbus communications, not available with display-enabled detectors (either Fixed display or IS barrier module/remote display). HART communications are in two separate options: super-imposed over the 4-20mA signal, or via the IS contacts on the IRmax display module for Local HART configurator connection.

Monitoring is possible with the optical system 90% obscured by salt or other contaminants, a fault signal will trigger at 90%. The level of obscuration can be checked if equipped with IR display.

Versions

  • IRmax Basic, detector only.
  • IRmax With Fixed IR Display which indicates gas concentrations, operating status and enables non-intrusive calibration.
  • IRmax With IS Barrier Module which allows the connection of a permanently installed Remote IR Display module (up to 30 metres from the detector), or Hand-Held IR Display for status checking and non-intrusive calibration. Ambient temperature must be below 40°C, and the IR display can only be used outside the hazardous area.

Features

  • ATEX and IECEx certified for use in hazardous areas (Zone 1 & 2) and Dust (Zones 21 & 22). Fixed IR display not certified for Dust zones
  • Ingress protection IP66
  • Response time T90 < 4 seconds
  • Detector housing 316 stainless steel with M20 or 1/2″NPT cable entry
  • Suitable for hot, cold, wet and saline environments, ideal for offshore, replaces Nimbus
  • Low power 1 watt, no heating of optical surfaces
  • STAY-CLIR optical coating prevents condensation faults
  • Simple to install
  • Choice of 29 calibrations including; Methane, Ethylene, Butane, Propane
  • Operating temperature -40°C to +75°C
  • Resistant to long term component drift
  • Size without display 158 x 75 x 57 mm, weight 1.58kg
  • Customs tariff number 90271010. Country of origin UK

Mounting options for walls, pipes 50mm (2 inches) or for connection to an auxiliary junction box.

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Title Size
IRmax-Datasheet 512 KB
IRmax-Manual-Iss-6-Oct-17 11 MB
IRMAX- ATEX Cert no display 749 KB
IRMAX- ATEX with-Display 2 MB

Additional information

Weight0.09 kg

Ordering Information

IRmax Infrared Hydrocarbon Gas DetectorDetector part numbers are configured. Previously used part numbers are detailed at the bottom of this page.
IRmax Remote and Hand-Held IR Display OptionsThe IR Display is available for direct connection to IRmax, or can be mounted up to 30 metres remote from the detector. The IR Display shows gas and optical obscuration levels, and enables non-intrusive calibration of the detector. Options and accessories are described in detail below.
Important: an IR Display can only be used with IRmax detectors fitted with a Fixed IR Display or an I.S. Barrier Module. The I.S. Barrier Module or Fixed IR Display cannot be retro-fitted to ‘IRmax Basic’.
C011151/1IR Display – Remote Version
Supplied within a glass-reinforced nylon housing for remote connection to IRmax. Requires an I.S. connection lead, see next page for options.
C011152/1IR Display – Remote Version With HART
Supplied within a glass-reinforced nylon housing for remote connection to IRmax. Requires an I.S. connection lead, see next page. HART enabled for calibration and diagnostics via a hand-held HART terminal.
C011205IR Display – Hand-Held Version
Supplied within a glass-reinforced nylon housing for temporary connection to IRmax. Provided with a 1.5-metre I.S. connecting lead.
IRmax I.S. Remote Display connecting leads
E079881.5-metre connecting lead
E079905-metre connecting lead
E0798910-metre connecting lead
E0799115-metre connecting lead
E0799220-metre connecting lead
M040400Connector only (Bulgin connector shell, for modifying leads). Requires pins, listed below.
E070040Pins for Bulgin connector (pack of 10)
IRmax Accessories
C011301Remote calibration box.
GRP (glass-fibre reinforced polyester) enclosure for use as described above.
Suitable for use in onshore and offshore environments.
M041007Calibration cap.
Fits over the standard weatherproof cap to enable calibration where local airspeed exceeds 2m/s.
S012130Mounting bracket kit.
Enables mounting to a wall or 2″ (50mm) pipe.
Comprises: bracket, straps/nuts/bolts for pipe-mounting. The installer must supply Wall-mounting fixings.
Not required if IRmax is being fitted to a junction box using a spigot gland.
S012180Stainless steel pipe mounting bracket kit
Supplied with stainless steel u-bolts to enable IRmax to be rigidly mounted to a 50mm (2″) pipe. Includes S012130 standard mounting bracket.
C011332Sunshade
Supplied with rivets for mounting to the S012180 pipe mounting kit.
C011333Stainless steel pipe mounting bracket kit with sunshade with stainless steel u-bolts to enable IRmax to be rigidly mounted to a 50mm (2″) pipe. Includes S012130 standard mounting bracket and C011332 sunshade.
S012147Spigot gland (M20).
Required for connecting IRmax to an auxiliary junction box. 5-wire, ATEX and IECEx certified.
S012169Duct mounting kit – for ducts between 300mm and 3m wide, air-flows from 4 to 20m/s. With mounting flange (stainless steel) and tube which is to be cut so that it protrudes half-way across the duct.
S012996Flow adaptor.
Replaces standard weatherproof cap for gas sampling applications.
C03706Dust filter.
Stainless steel mesh filter with 100-micron pore-size. Fits within standard weather-cap to protect optical components in very dusty environments.
S012827PC communications kit – supplied with software and USB cables for PC and IRmax detector connection. Not suitable for use in a hazardous area.
C03579Spanner – essential for Fixed IR Display Module and IS Barrier Module installation. Simplifies tightening of the threaded collar that connects the accessory to the IRmax body.
IRmax Auxiliary Exd junction box
S012295M20 Auxiliary junction box, ATEX/IECEx certified.
S0122961/2″NPT Auxiliary junction box, ATEX/IECEx certified.
IRmax Auxiliary Exe junction box
C01197M20 Exe junction box, ATEX/IECEx certified.
Past Detector part numbers
IRMAX-01Methane, 0-100% LEL no display, M20, ATEX, 4-20mA sink
IRMAX-02Methane, 0-100% LEL no display, M20, ATEX, 4-20mA source
IRMAX-03Methane, 0-100% LEL fixed display, M20, ATEX, 4-20mA sink
IRMAX-04Methane, 0-100% LEL fixed display, M20, ATEX, 4-20mA source
IRMAX-05Methane, 0-100% LEL fixed display, 1/2″NPT, ATEX, 4-20mA+ HART source
IRMAX-06Methane, 0-100% LEL IS barrier module, M20, ATEX, 4-20mA sink
IRMAX-07Methane, 0-100% LEL IS barrier module, M20, ATEX, 4-20mA source
IRMAX-08Butane 0-100% LEL no display, M20, ATEX, 4-20mA sink
IRMAX-09Butane 0-100% LEL no display, M20, ATEX, 4-20mA source
IRMAX-10Butane 0-100% LEL IS barrier module, M20, ATEX, 4-20mA sink
IRMAX-11LPG 0-100% LEL no display, M20, ATEX, 4-20mA sink
IRMAX-12LPG 0-100% LEL no display, M20, ATEX, 4-20mA source
IRMAX-13LPG 0-100% LEL IS barrier module, M20, ATEX, 4-20mA sink

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