OLCT IR

Introducing the rugged and reliable OLCTIR

Offshore platforms, petrochemical and chemical industries, naval installations, waste water treatment plants… in these types of environments, infrared technology is very often the only solution. The OLCT IR is built to withstand these harsh environments, which require the most efficient gas and flame detection.

Proven Leading-Edge Technology

• “Zero Maintenance” Efficiency
• The answer to false alarms
• Non-intrusive calibration

Two Configurations for Adapting to Your Site

• Standalone Version
• Free-Fitting Version

Unrivaled Performance

• Reliability
• Durability

Special Version

• The semi-conductor electronics of the OLCT IR guarantee extreme accuracy and constant stability.
• Costs are considerably reduced:- Lifetime detector stability after initial calibration- Requires minimal maintenance
• The economic implications of false alarms have led us to design the OLCT IR with the ability to ignore external elements that trigger false alarms.  
• Equipped with a non-intrusive system allowing a single operator to access a protected menu.
• The detector can therefore be calibrated in an explosive area in total compliance with safety rules.  
• Includes a case fitted with a mounting system and a wiring compartment for electrical connections in explosive zones.
• Magnetic system for calibrating in explosive zones without opening the compartment cover.  
• Includes a case fitted with a 3-wire output for connection to any approved junction box.  
• Highly resistant to sensor poisoning
• High gas concentration does not saturate the transmitted signal
• All vital functions are maintained even if an accumulation of dust or other substances reduces transmission by 70%.
• Heated mirror and window to prevent misting or icing of the optics
• Operates in an oxygen deficient atmosphere  
• Stainless steel explosion-proof compartment, secure connection compartment
• The mirror is made of quartz
• External optics are made of quartz capable of withstanding high pressure and abrasive substances.
• Simultaneously optimizes the response to various hydrocarbons, meeting the requirements for multihazard sites.

Technical Specifications

Detection principle:	Optics: infrared absorption
Detected gases:	Hydrocarbons Methane, propane/butane as standard Others on request including CO2
Range:	0-100% LEL CH4, C3H8, C4H10 0-100% of volume CH4 0-3% of volume CO2
Housing:	316L Stainless Steel
Ingress protection:	IP66 / IP67, DIN 40050
Sensitivity:	1% LEL
Accuracy:	+/-3% LEL CH4 or +/- 5% of the value +/-2% LEL HC or +/- 3% of the value
Response time:	T90 < 8 sec.
Self test:	Continuous
Calibration:	In factory or locally
Humidity Range:	0 to 99% (without condensation)
Output signal:	4-20 mA
Max load resistance:	300 Ω
Trouble signals:	Line fault (0 mA) Optics fault (0.5 mA) Other fault (1 mA) Calibration mode (2 mA) Scale over range (23 mA)
Power supply:	15 to 30 VDC at detector terminal
Average consumption:	2.5 W
Connection:	3 active wires, shielded cable
Maximum resistance per conductor of detector/central unit cable:	8 Ω (250 m in 1.5 mm2) under 21 VCC
Type of cable inlet:	M20, Cable gland not supplied
Operating temperature:	-25°C to +55°C on standard version -50°C to +55°C on CH4 version (P/N WIRCH4LBT) & Propane (P/N WIRPROLBT)
Storage temperature:	- 50°C to 55°C
Weight and dimensions:	212 x 105 x 120 mm; 1.6 kg
EC Electromagnetic compatibility:	Complies with EN50270
Certifications:		Ineris 03ATEX0141X Ex d e ia IIC T4- II 2GD Ex tD A21 IP66 T135C T.amb: -50°C to +65°C
		IECEx INE 07.0005X Ex d e ia IIC T4- II 2GD Ex tD A21 IP66 T135C T.amb: -50°C to +65°C
Performance:	INERIS 03ATEX0141X EN 61779-1, -4
SIL capability:		INERIS 03ATEX0141X/02 SIL capability 2 EN 50402/EN 61508