Crowcon IRmax - Gas Detector
The Crowcon 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.
This is simple to install thanks to its compact size and 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
- Low power – only consumes 1W of power, enabling small power supplies and battery back-up systems to be used
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IRmax with Fixed IR display |
IRmax with IS Barrier Module |
Remote IR Display |
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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 |
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Enclosure material |
316 stainless steel |
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Power |
12-30 Vdc. < 1W |
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Connection |
One M20 or 1/2” NPT cable gland entry |
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Electrical output |
4-20mA current sink or source |
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Operating temperature |
-40°C to +75°C (-40°F to 167°F) |
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Humidity |
0 to 95% RH non-condensing |
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Pressure range |
Atmospheric +/- 10% |
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Repeatability |
+/- 2% FSD |
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Zero drift |
+/- 2% FSD per year maximum |
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Response time |
T-90 <4 seconds |
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Functional safety |
Validation to IEC61508, EN50402 SIL 2 |
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Approvals |
Ex II 2 GD |
Ex II 2 G |
Ex II 2 GD |
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EMC compliance |
Directive 2014/30 EU: EN50270, FCC CFR47 Part 15B, ICES-003 |
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Zones |
Certified for use in Zone 1 & 2. |