Designed for the detection of explosive gases, toxic gases or oxygen, this combustible gas detector comes with a Wheatstone bridge output (OLC 100) or 4-20mA output (OLCT 100). Whatever your application Oldham offers a solution: catalytic, electrochemical, semiconductor, or poison control version. ATEX approved, these detectors are available in explosion safe or intrinsically safe versions. In addition to this range the OLC/OLCT 100 offers an infrared sensor, which allows it to be used in more severe environmental conditions, where the presence of poisons could harm the use of a catalytic sensor. With a 3-year warranty on the sensor and electronics, the OLCT 100 XP-IR will provide reliability and extended lifetime. With this new line of detectors, Oldham broadens its product range with products that combine reliability, durability and ease of use.


Key Features:

– 4-20 mA analog transmitter without display

– SIL2 capability for LEL, O2, CO, H2S, NH3, CO2

– Detects combustible, toxic or refrigerant gases and O2

– Available with electrochemical, infrared or semi-conductor sensor

– Designed for industrial applications

– Available in explosion-proof or intrinsically safe versions, and stainless steel

– A high-temperature version allows operation up to 200°C

Sensor TypesCatalytic Bead
EnclosureEpoxy-coated aluminium housing (Inox 316L optional), 316 stainless steel sensors
Dimension5.91 x 5.43 x 3.31"
Weight1.8 kg
Communication4 to 20 mA
Operating Voltage15.5 to 32 VDC
Power Consumption100 mA
ApprovalsATEX II 2 GD / Ex d IIC T6 Gb / Ex tb IIIC T85°C Db IP66 (for the transmitter to be installed in a cold zone)
ATEX II 2 G / Ex d IIC T4..T2 Gb (for the sensor to be installed in the hot zone)