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.
SIL 2 certified according to EN 50402, the 100 series is very safe. As an example the Probability of Failure on Demand (PFD) of combustible versions is 1 out of 418 for the catalytic version and 1 out of 2857 for the infrared version.
OLCT 100 XP: Explosion-proof version and equipped with a catalytic, electrochemical or semiconductor sensor, for detection of explosive, toxic gases or oxygen.
OLCT 100 IS: Intrinsically safe version and equipped with an electrochemical sensor for detection of toxic gases or oxygen.
OLCT 100 XP IR: Explosion-proof version and equipped with an infrared sensor for detection of CO2.
OLCT 100 XP HT: High temperature explosion-proof version, for detection of explosive gases up to 200°C.
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 sensors
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
Model |
OLC 100 |
OLCT 100 XP |
OLCT 100 XP IR |
OLCT 100 XP |
OLCT 100 XP HT |
OLCT 100 XP |
OLCT 100 IS |
Sensor |
Catalytic bead |
Catalytic bead |
Infrared |
Electrochemical |
Catalytic bead |
Semi-conductor |
Electrochemical |
Material |
Epoxy-coated aluminum housing (Inox 316L optional) |
Epoxy-coated aluminum housing (Inox 316L optional) |
Epoxy-coated aluminum housing (Inox 316L optional) |
Epoxy-coated aluminum housing (Inox 316L optional) |
Epoxy-coated aluminum housing (Inox 316L optional) |
Epoxy-coated aluminum housing (Inox 316L optional) |
Epoxy-coated aluminum housing (Inox 316L optional) |
Dimensions (mm) (inches) |
135 x 133 x 84 |
135 x 133 x 84 |
179 x 138 x 84 |
179 x 138 x 84 |
150 x 138 x 84 |
179 x 138 x 84 |
179 x 138 x 84 |
Weight (kg) |
0.95 |
1 |
1.1 |
1.1 |
1.8 |
1.1 |
1.1 |
Ingress Protection |
IP66 |
IP66 |
IP66 |
IP66 |
IP66 |
IP66 |
IP66 |
Cable Entry |
M20 or ¾ NPT |
M20 or ¾ NPT |
M20 or ¾ NPT |
M20 or ¾ NPT |
M20 or ¾ NPT |
M20 or ¾ NPT |
M20 or ¾ NPT |
Supply Voltage |
only by OLDHAM Controller |
15.5 to 32 VDC |
13.5 to 32 VDC |
10 to 32 VDC |
15.5 to 32 VDC |
15.5 to 32 VDC |
15.5 to 32 VDC |
Average Consumption |
340 mA |
110 mA |
80 mA |
23.5 mA |
100 mA |
100 mA |
23.5 mA |
Pressure |
atmospheric ± 10% |
atmospheric ± 10% |
atmospheric ± 10% |
atmospheric ± 10% |
atmospheric ± 10% |
atmospheric ± 10% |
atmospheric ± 10% |
Output signal |
Usual source encoded from 0 to 23 mA (not isolated) |
Usual source encoded from 0 to 23 mA (not isolated) |
Usual source encoded from 0 to 23 mA (not isolated) |
Usual source encoded from 0 to 23 mA (not isolated) |
Usual source encoded from 0 to 23 mA (not isolated) |
Usual source encoded from 0 to 23 mA (not isolated) |
Usual source encoded from 0 to 23 mA (not isolated) |