IRmax and IR Plus — Fixed Infrared Hydrocarbon Detectors for Zones 1 and 2
Country: United Kingdom · Model: IRmax / IR Plus
Fixed infrared detectors of flammable hydrocarbons for hazardous zones 1 and 2. IRmax consumes less than 1 W from 12–30 V DC and has a 316 steel housing, while IR Plus has a dual-wavelength IR channel and a T90 response time of 4 seconds. Both give 4–20 mA and have an IP66 degree of protection.
- IRmax
- unheated Stay-ClIR optics, < 1 W, 12–30 V DC; 158×75×57 mm; 1.58 kg; −40…+75 °C
- IR Plus
- dual-wavelength IR, heated optics + hydrophobic Stay-ClIR mirrors; T90 4 s; max. 5.5 W; 194×119×94 mm; 4.1 kg; 316L
- Gases
- methane, propane, butane and other hydrocarbons; IR Plus — also ethylene, hexane, butane (software configuration)
- Outputs
- 3-wire 4–20 mA sink/source; 2 mA — optics contamination (75 %), 0 mA — fault (90 %); RS-485 Modbus, HART 7 (option)
Technical specifications
| IRmax | unheated Stay-ClIR optics, < 1 W, 12–30 V DC; 158×75×57 mm; 1.58 kg; −40…+75 °C |
|---|---|
| IR Plus | dual-wavelength IR, heated optics + hydrophobic Stay-ClIR mirrors; T90 4 s; max. 5.5 W; 194×119×94 mm; 4.1 kg; 316L |
| Gases | methane, propane, butane and other hydrocarbons; IR Plus — also ethylene, hexane, butane (software configuration) |
| Outputs | 3-wire 4–20 mA sink/source; 2 mA — optics contamination (75 %), 0 mA — fault (90 %); RS-485 Modbus, HART 7 (option) |
| Housing | stainless steel 316 / 316L; IP66 |
| Versions | with local display, with intrinsically safe barrier module, remote display (up to 3 m) |
| IR Plus metrology | zero drift ±2 % FS/year; repeatability and linearity ±2 % FS |
| Approvals | zones 1 and 2; IR Plus — FM |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
IRmax measures methane, propane, butane and other flammable hydrocarbons and vapours. The unheated Stay-ClIR optics are covered with a durable coating that prevents failures due to condensation, and consumption below 1 W makes it possible to use weaker power sources, longer cables and batteries. The dimensions are 158×75×57 mm, the weight 1.58 kg, and the operating temperature from −40 to +75 °C. IR Plus has dual-wavelength IR technology, optics with smart heating and hydrophobic Stay-ClIR mirrors, so dust, moisture and aggressive substances do not cause false alarms. The housing is 316L steel, 194×119×94 mm, 4.1 kg (4.5 kg with a display, 4.9 kg with a barrier), up to 5.5 W with heating. The output is 4–20 mA sink or source, with a 2 mA signal at 75 % optics contamination and 0 mA on a fault at 90 %. RS-485 Modbus and HART 7 are optional.
How to choose
If minimum consumption and battery power are important, take IRmax. For dust, moisture and a chemically aggressive environment, and also for ethylene, hexane or butane by software configuration, IR Plus is needed; its zero drift is ±2 % of full scale per year, and repeatability and linearity are ±2 % of full scale. The versions are without a display, with a local display, with an intrinsically safe barrier module, or with a remote display at a distance of up to 3 m. For toxic gases and oxygen see Xgard Bright.
Request a price and lead time
IRmax and IR Plus — Fixed Infrared Hydrocarbon Detectors for Zones 1 and 2. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
Which gases do IRmax and IR Plus detect?
Methane, propane, butane and other flammable hydrocarbons. IR Plus also ethylene, hexane and butane by software configuration.
What are the power consumption and supply voltage?
IRmax consumes less than 1 W, IR Plus up to 5.5 W with heating. The supply is 12–30 V DC.
What do the 2 mA and 0 mA signals at the output mean?
2 mA signals 75 % optics contamination, 0 mA signals a fault at 90 % contamination. The main signal is 4–20 mA, sink or source.
What are the degree of protection and the operating temperature?
IP66, with a 316 or 316L steel housing. IRmax works from −40 to +75 °C.
Is there digital communication?
RS-485 Modbus and HART 7 are optional.
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