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IR PLUS

IR Plus is a dependable, durable, and exceptionally sturdy infrared hydrocarbon gas detector that uses dual IR waveband technology. With optional display capabilities, this device ensures swift and fail-safe detection of methane, propane, and various other hydrocarbon further enhances its reliability, making it an ideal choice for demanding environments.

Product Overview

IR Plus is an infrared (IR) hydrocarbon detector that uses dual IR waveband technology. Designed to ensure safety in the heavy industrial sector, IR Plus provides real-time, fail-safe detection of methane, propane, and more. With over 50 years of expertise, Crowcon has engineered IR Plus to deliver unmatched stability, durability, and speed, even in the harshest environments. Its intelligent heater optics and STAY-CLIR hydrophobic reflectors resist dust, moisture, and corrosive chemicals, eliminating false alarms and downtime.

The IR Plus responds in just 4 seconds, giving you critical safety information fast, and its tested resilience ensures reliability under extreme conditions, including high temperatures and 100 %RH condensing environments. Offering a leading 5-year warranty for reduced maintenance costs, the IR Plus also supports flexible, non-intrusive testing with multiple display options and standard output choices like 4-20 mA analogue, RS-485 (Modbus), Local-HART, and HART over 4-20 mA, making it adaptable for various monitoring systems.

Specifications

Parameter Specification
Gases Methane, Propane
Contact Crowcon for more target gases
Size 194mm x 119mm x 94.2mm (7.6 x 4.7 x 3.7 ins)
Weight 4.1kg (9.0 lbs) – IR Plus
4.5kg (9.92 lbs) – IR Plus with Fixed IR Display
4.9kg (10.8 lbs) – IR Plus with IS Barrier Module
0.2kg (0.4 lbs) – IR Plus Remote Display
Enclosure Material 316L Stainless Steel
Response Time (T90) 4 seconds
Performance Zero Drift: ±2% FSD per year
Repeatability: ±2% FSD
Linearity: ±2% FSD
IR Source Intelligent heated optics with Stay-clIR hydrophobic mirror
Operating Voltage 12V DC to 30V DC
Power < 5.5 W
Output 3-wire 4–20 mA (Sink or Source)
2 mA dirty optics warning (at 75% obscuration, configurable)
0 mA detector fault signal (at 90% obscuration, configurable)
RS-485 Modbus
HART 7 (optional)
Fault Signal <3.6 mA and/or >21 mA
Connection/Port Entries 2 x M20 or 2 x ¾” NPT cable gland entry
Operating Temperature -40°C to +70°C (-40°F to 158°F)
Operating Humidity 0 to 100% RH condensing
Degree of Protection IP66 (EN60529)
Note: IP ratings do not imply gas detection during/after exposure to those conditions
Functional Safety IEC 61508, EN 50402, SIL2
Performance Standards IEC EN 60079-29-1*
Hazloc Standards EN IEC 60079-0, IEC 60079-1, IEC 60079-11, IEC 60079-31
EN IEC 60079-0, EN 60079-1, EN 60079-11, EN 60079-31
Approvals ATEX, IECEx, INMETRO, CNEx, PESO, ECAS*, FM*
EMC Compliance EN50270, FCC CFR47 Part 15B, ICES-003
Warranty 5 years

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