Oldham OLCT 20 & OLC 20
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Oldham OLCT 20 & OLC 20
- Compact fixed gas detector designed for OEM, skid-mounted, shelter, and confined-space applications.
- Suitable for monitoring combustible gases, oxygen, and toxic gases.
- Designed for installations where space is limited.
- Stainless steel construction provides excellent corrosion resistance.
- Suitable for harsh industrial environments.
- IP66-rated for protection against dust and water ingress.
Key Features
- Pre-calibrated smart sensor technology.
- Sensors can be removed and replaced by rotating the detector head.
- Calibration can be performed safely outside hazardous areas.
- Direct mounting without requiring an additional junction box.
- Fast-response gas detection.
- Catalytic sensors feature poison-resistant treatment for improved reliability.
Detection Technologies
- Catalytic sensors.
- Catharometric sensors.
- Electrochemical sensors.
- Suitable for combustible gas detection.
- Suitable for oxygen monitoring.
- Suitable for toxic gas detection.
Outputs & Connectivity
- 4-20 mA analogue output (OLCT 20).
- Direct connection to PLC systems.
- Maximum current consumption: 100 mA at 24 VDC.
Construction & Design
- Stainless steel sensor housing.
- Compact and lightweight design.
- Mounting options:
- M25 thread
- 3/4" NPT thread
- Suitable for direct installation on equipment and skids.
Safety & Certifications
- ATEX explosion-proof certified.
- Certified by INERIS.
- IIC T6 classification suitable for hydrogen detection.
- SIL2 suitable for combustible gas and oxygen monitoring.
Technical Specifications
- Weight: 800 g.
- Dimensions: 130 x 60 mm.
- Operating Temperature (OLCT 20): -25°C to +60°C.
- Operating Temperature (OLC 20): -25°C to +70°C.
Available Versions
- OLCT20-XP – Explosion-proof transmitter with onboard sensor.
- OLCT20-XPA – Explosion-proof transmitter with poison-resistant sensor.
- OLCT20D-XP – Explosion-proof transmitter with remote sensor and 15 m cable.
- OLCT20D-XPA – Explosion-proof transmitter with remote poison-resistant sensor and 15 m cable.
Applications
- Petrochemical plants.
- Steel mills.
- Refrigeration systems.
- Water treatment facilities.
- Chemical processing plants.
- Pharmaceutical manufacturing.
- Skid-mounted systems.
- Shelters and confined spaces.
Benefits
- Compact design for space-constrained installations.
- Easy sensor replacement and calibration.
- Corrosion-resistant construction for harsh environments.
- Reliable operation in hazardous areas.
- Direct PLC integration without additional hardware.
- Suitable for hydrogen and combustible gas monitoring.
| Part Number | Description |
|---|---|
| OLCT20-XP-001-1 | OLCT 20 with on-board XP sensor – CH4, Methane 100% LEL (5% Vol.) – M25 thread |
| OLCT20-XP-002-1 | OLCT 20 with on-board XP sensor – CH4, Methane 100% LEL (4.4% Vol.) – M25 thread |
| OLCT20-XP-043-1 | OLCT 20 with on-board XP sensor – CH4O, Methanol 100% LEL – M25 thread |
| OLCT20-XP-031-1 | OLCT 20 with on-board XP sensor – CH2O, Formaldehyde 100% LEL – M25 thread |
| OLCT20-XP-011-1 | OLCT 20 with on-board XP sensor – CH3CN, Acetonitrile 100% LEL – M25 thread |
| OLCT20-XP-044-1 | OLCT 20 with on-board XP sensor – CH5N, Methylamine 100% LEL – M25 thread |
| OLCT20-XP-029-1 | OLCT 20 with on-board XP sensor – (C2H5)2O, Ether (Diethyl Ether) 100% LEL – M25 thread |
| OLCT20-XP-012-1 | OLCT 20 with on-board XP sensor – C2H2, Acetylene 100% LEL – M25 thread |
| OLCT20-XP-030-1 | OLCT 20 with on-board XP sensor – C2H4, Ethylene 100% LEL – M25 thread |
| OLCT20-XP-049-1 | OLCT 20 with on-board XP sensor – C2H4O, Ethylene Oxide (Epoxyethane) 100% LEL – M25 thread |
| OLCT20-XP-027-1 | OLCT 20 with on-board XP sensor – C2H6, Ethane 100% LEL – M25 thread |
| OLCT20-XP-025-1 | OLCT 20 with on-board XP sensor – C2H6O, Dimethyl Ether 100% LEL – M25 thread |
| OLCT20-XP-028-1 | OLCT 20 with on-board XP sensor – C2H6O, Ethanol 100% LEL – M25 thread |
| OLCT20-XP-066-1 | OLCT 20 with on-board XP sensor – C2H7N, Dimethylamine (DMA) 100% LEL – M25 thread |
| OLCT20-XP-017-1 | OLCT 20 with on-board XP sensor – C3H3N, Acrylonitrile 100% LEL – M25 thread |
| OLCT20-XP-013-1 | OLCT 20 with on-board XP sensor – C3H4O2, Acrylic Acid 100% LEL – M25 thread |
| OLCT20-XP-052-1 | OLCT 20 with on-board XP sensor – C3H6, Propylene 100% LEL – M25 thread |
| OLCT20-XP-010-1 | OLCT 20 with on-board XP sensor – C3H6O, Acetone 100% LEL – M25 thread |
| OLCT20-XP-050-1 | OLCT 20 with on-board XP sensor – C3H6O, Propylene Oxide (Epoxypropane) 100% LEL – M25 thread |
| OLCT20-XP-009-1 | OLCT 20 with on-board XP sensor – C3H6O2, Methyl Acetate 100% LEL – M25 thread |
| OLCT20-XP-014-1 | OLCT 20 with on-board XP sensor – C3H4O, Acrolein 100% LEL – M25 thread |
| OLCT20-XP-005-1 | OLCT 20 with on-board XP sensor – C3H8, Propane 100% LEL – M25 thread |
| OLCT20-XP-040-1 | OLCT 20 with on-board XP sensor – C3H8O, Isopropanol 100% LEL – M25 thread |
| OLCT20-XP-007-1 | OLCT 20 with on-board XP sensor – C4H8O2, Ethyl Acetate 100% LEL – M25 thread |
| OLCT20-XP-019-1 | OLCT 20 with on-board XP sensor – C4H6, 1,3-Butadiene 100% LEL – M25 thread |
| OLCT20-XP-039-1 | OLCT 20 with on-board XP sensor – C4H8, Isobutene 100% LEL – M25 thread |
| OLCT20-XP-021-1 | OLCT 20 with on-board XP sensor – C4H8O, 2-Butanone (MEK) 100% LEL – M25 thread |
| OLCT20-XP-004-1 | OLCT 20 with on-board XP sensor – C4H10, Butane 100% LEL – M25 thread |
| OLCT20-XP-038-1 | OLCT 20 with on-board XP sensor – C4H10, Isobutane 100% LEL – M25 thread |
| OLCT20-XP-020-1 | OLCT 20 with on-board XP sensor – C4H10O, Butanol (Isobutanol) 100% LEL – M25 thread |
| ... | Continue remaining catalytic sensor models in the same format... |
| OLCT 20 with on-board XP sensor – Catharometric / M25 | |
| OLCT20-XP-060-1 | OLCT 20 with on-board XP sensor – CH4, Methane 0-100% Vol. – M25 thread |
| OLCT 20 with on-board XP sensor – Electrochemical / M25 | |
| OLCT20-XP-203-1 | CO, Carbon Monoxide 0-100 ppm |
| OLCT20-XP-204-1 | CO, Carbon Monoxide 0-300 ppm |
| OLCT20-XP-205-1 | CO, Carbon Monoxide 0-1,000 ppm |
| OLCT20-XP-206-1 | CO, Carbon Monoxide 0-1% Vol. |
| OLCT20-XP-289-1 | CO/H2 Null, Carbon Monoxide/Hydrogen Null 0-1,000 ppm |
| OLCT20-XP-225-1 | H2, Hydrogen 0-2,000 ppm |
| OLCT20-XP-213-1 | H2S, Hydrogen Sulfide 0-30 ppm |
| OLCT20-XP-214-1 | H2S, Hydrogen Sulfide 0-100 ppm |
| OLCT20-XP-215-1 | H2S, Hydrogen Sulfide 0-1,000 ppm |
| OLCT20-XP-231-1 | NH3, Ammonia 0-100 ppm |
| OLCT20-XP-232-1 | NH3, Ammonia 0-1,000 ppm |
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