Oldham OLCT 100 & OLC 100 Gas Detectors

  1. Home
  2. Products

Oldham OLCT 100 & OLC 100 Gas Detectors

  • Fixed gas detector designed for monitoring combustible, toxic, refrigerant gases, and oxygen.
  • Available in OLCT 100 and OLC 100 versions.
  • OLCT 100 provides a 4-20 mA output signal.
  • OLC 100 uses a Wheatstone bridge mV output for combustible gas detection.
  • Supports catalytic, electrochemical, semiconductor, and infrared sensor technologies.
  • Suitable for industrial and hazardous area applications.

Key Features

  • Detects combustible gases, toxic gases, refrigerant gases, and oxygen.
  • Available in explosion-proof and intrinsically safe versions.
  • High reliability and functional safety performance.
  • Suitable for harsh industrial environments.
  • Optional stainless steel construction for corrosive environments.
  • Sensor housing manufactured from stainless steel.

Sensor Technologies

  • Catalytic bead sensors.
  • Electrochemical sensors.
  • Semiconductor sensors.
  • Infrared sensors.

Outputs & Connectivity

  • 4-20 mA analogue output (OLCT 100).
  • mV Wheatstone bridge output (OLC 100).
  • Compatible with gas detection controllers and monitoring systems.

Safety & Certifications

  • SIL2 capability for LEL, Oxygen, Carbon Monoxide, Hydrogen Sulphide, Ammonia, and Carbon Dioxide detection.
  • ATEX approved.
  • Stainless steel intrinsically safe version approved for Zone 0 (gas) and Zone 20 (dust).
  • Other versions approved for Zone 1 (gas) and Zone 21 (dust).

Construction & Design

  • Epoxy-coated aluminium housing as standard.
  • Optional stainless steel housing available.
  • Corrosion-resistant design for harsh environments.
  • Cable entry options: M20 or 3/4" NPT.

Model Variants

  • OLCT 100 XP – Explosion-proof version with catalytic, electrochemical, or semiconductor sensors.
  • OLCT 100 IS – Intrinsically safe version with electrochemical sensor for toxic gases and oxygen.
  • OLCT 100 XP IR – Explosion-proof infrared version for CO₂, SF₆, and selected refrigerants.
  • OLCT 100 XP HT – High-temperature explosion-proof version for combustible gases up to 200°C.

Technical Specifications

  • Operating Temperature: Up to 200°C (HT version).
  • High-temperature cable options: 5 m, 10 m, and 15 m.
  • Warranty: 3 years (excluding sensors and filters).

Applications

  • Oil & Gas facilities.
  • Marine environments.
  • Wastewater treatment plants.
  • Food processing facilities.
  • Chemical processing plants.
  • Industrial manufacturing sites.

Benefits

  • Flexible sensor technology options.
  • Suitable for a wide range of gases.
  • High safety integrity and reliability.
  • Corrosion-resistant construction for demanding environments.
  • Available in explosion-proof and intrinsically safe configurations.
Part Number Description
Flameproof Detector – With On-board XP Catalytic Sensor
OLC100-XP-001-1OLC100, 0-100% LEL Methane (5% volume), cable entry: M20, supplied without cable gland
OLC100-XP-001-3OLC100, 0-100% LEL Methane (5% volume), cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-002-1OLC100, 0-100% LEL Methane (4.4% volume), cable entry: M20, supplied without cable gland
OLC100-XP-002-3OLC100, 0-100% LEL Methane (4.4% volume), cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-003-1OLC100, 0-100% LEL Hydrogen, cable entry: M20, supplied without cable gland
OLC100-XP-003-3OLC100, 0-100% LEL Hydrogen, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-004-1OLC100, 0-100% LEL Butane, cable entry: M20, supplied without cable gland
OLC100-XP-004-3OLC100, 0-100% LEL Butane, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-005-1OLC100, 0-100% LEL Propane, cable entry: M20, supplied without cable gland
OLC100-XP-005-3OLC100, 0-100% LEL Propane, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-006-1OLC100, 0-100% LEL Ammonia, cable entry: M20, supplied without cable gland
OLC100-XP-006-3OLC100, 0-100% LEL Ammonia, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-007-1OLC100, 0-100% LEL Ethyl Acetate, cable entry: M20, supplied without cable gland
OLC100-XP-007-3OLC100, 0-100% LEL Ethyl Acetate, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-008-1OLC100, 0-100% LEL Butyl Acetate, cable entry: M20, supplied without cable gland
OLC100-XP-008-3OLC100, 0-100% LEL Butyl Acetate, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-009-1OLC100, 0-100% LEL Methyl Acetate, cable entry: M20, supplied without cable gland
OLC100-XP-009-3OLC100, 0-100% LEL Methyl Acetate, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-010-1OLC100, 0-100% LEL Acetone, cable entry: M20, supplied without cable gland
OLC100-XP-010-3OLC100, 0-100% LEL Acetone, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-011-1OLC100, 0-100% LEL Acetonitrile, cable entry: M20, supplied without cable gland
OLC100-XP-011-3OLC100, 0-100% LEL Acetonitrile, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-012-1OLC100, 0-100% LEL Acetylene, cable entry: M20, supplied without cable gland
OLC100-XP-012-3OLC100, 0-100% LEL Acetylene, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-013-1OLC100, 0-100% LEL Acrylic Acid, cable entry: M20, supplied without cable gland
OLC100-XP-013-3OLC100, 0-100% LEL Acrylic Acid, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-014-1OLC100, 0-100% LEL Acroleine, cable entry: M20, supplied without cable gland
OLC100-XP-014-3OLC100, 0-100% LEL Acroleine, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-015-1OLC100, 0-100% LEL Butyl Acrylate, cable entry: M20, supplied without cable gland
OLC100-XP-015-3OLC100, 0-100% LEL Butyl Acrylate, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-016-1OLC100, 0-100% LEL Ethyl Acrylate, cable entry: M20, supplied without cable gland
OLC100-XP-016-3OLC100, 0-100% LEL Ethyl Acrylate, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-017-1OLC100, 0-100% LEL Acrylonitrile, cable entry: M20, supplied without cable gland
OLC100-XP-017-3OLC100, 0-100% LEL Acrylonitrile, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-018-1OLC100, 0-100% LEL Benzene, cable entry: M20, supplied without cable gland
OLC100-XP-018-3OLC100, 0-100% LEL Benzene, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-019-1OLC100, 0-100% LEL 1,3-Butadiene, cable entry: M20, supplied without cable gland
OLC100-XP-019-3OLC100, 0-100% LEL 1,3-Butadiene, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-020-1OLC100, 0-100% LEL Butanol (Isobutanol), cable entry: M20, supplied without cable gland
OLC100-XP-020-3OLC100, 0-100% LEL Butanol (Isobutanol), cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-021-1OLC100, 0-100% LEL 2-Butanone, cable entry: M20, supplied without cable gland
OLC100-XP-021-3OLC100, 0-100% LEL 2-Butanone, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-022-1OLC100, 0-100% LEL Cumene, cable entry: M20, supplied without cable gland
OLC100-XP-022-3OLC100, 0-100% LEL Cumene, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-023-1OLC100, 0-100% LEL Cyclohexane, cable entry: M20, supplied without cable gland
OLC100-XP-023-3OLC100, 0-100% LEL Cyclohexane, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-024-1OLC100, 0-100% LEL Cyclohexanone, cable entry: M20, supplied without cable gland
OLC100-XP-024-3OLC100, 0-100% LEL Cyclohexanone, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-025-1OLC100, 0-100% LEL Dimethyl Ether, cable entry: M20, supplied without cable gland
OLC100-XP-025-3OLC100, 0-100% LEL Dimethyl Ether, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-026-1OLC100, 0-100% LEL Dodecane, cable entry: M20, supplied without cable gland
OLC100-XP-026-3OLC100, 0-100% LEL Dodecane, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-027-1OLC100, 0-100% LEL Ethane, cable entry: M20, supplied without cable gland
OLC100-XP-027-3OLC100, 0-100% LEL Ethane, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-028-1OLC100, 0-100% LEL Ethanol, cable entry: M20, supplied without cable gland
OLC100-XP-028-3OLC100, 0-100% LEL Ethanol, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-029-1OLC100, 0-100% LEL Diethyl Ether, cable entry: M20, supplied without cable gland
OLC100-XP-029-3OLC100, 0-100% LEL Diethyl Ether, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-030-1OLC100, 0-100% LEL Ethylene, cable entry: M20, supplied without cable gland
OLC100-XP-030-3OLC100, 0-100% LEL Ethylene, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-031-1OLC100, 0-100% LEL Formaldehyde, cable entry: M20, supplied without cable gland
OLC100-XP-031-3OLC100, 0-100% LEL Formaldehyde, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-032-1OLC100, 0-100% LEL LPG, cable entry: M20, supplied without cable gland
OLC100-XP-032-3OLC100, 0-100% LEL LPG, cable entry: 3/4 NPT, supplied without cable gland
OLC100-XP-033-1OLC100, 0-100% LEL Gasoil, cable entry: M20, supplied without cable gland
OLC100-XP-033-3OLC100, 0-100% LEL Gasoil, cable entry: 3/4 NPT, supplied without cable gland

Enquire About This Product

Get in touch with us to see how we can help you with your project

Thank you Message Sent
Error occurred while sending email. Please try again later.