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Series 20 Detector-Transmitter
Brand: Oldham
The OLC(T) 20 Series of gas detectors are designed for indoor or outdoor facility monitoring and other applications to accommodate your gas detection requirements at a reasonable price.
OLC 20 Detector
The new generation of OLC 20 combustible sensors are unaffected by poisons. The units provide extremely quick response times and complete reliability.
They can be fitted on a housing with a M25 or 3/4" NPT thread.
OLC 20D Detector
Based on the OLC 20 sensor unit, the OLC 20D detector is equipped with a 15 meters long cable (standard version) and fitting gland for direct connection to a data logger. A high-temperature version allows operation at 200°C (392°F).
Features- Intrinsically Safe (IS) and XP approved
- Small in size
- Resistant to corrosion
- Pre-calibrated sensor unit
Specifications
Brand
Accuracy
- ± 0.05 to ± 10 ppm at Full Scale
- 0.4 % Volume at Full Scale
- 1 % LEL between 0 to 60 % LEL at Full Scale
- 1 % Volume at Full Scale
- 100 ppm at Full Scale
Approvals & Certifications
- CE EN 50270
- Ex [EEx d IIC T6, II 2 GD - Model OLCT 20 (XP Transmitter), OLCT 20D (XP Remote Transmitter), OLC 20, OLC 20D], [EEx ia IIC T4, II 1 GD - Model OLCT 20 (IS Transmitter), OLCT 20D (IS Remote Transmitter)]
- INERIS 01-ATEX-0004X
Consumption
- Power (Catalytic): 100 mA - Max.
- Power: 25 mA - Max.
Diameter
- Wiring Connection: 0.236” (6 mm)
Electrical Connectors
- 2 Reinforced Wires - Model OLCT 20 (Electrochemical for XP Transmitter) & IS Transmitter, OLCT 20D (Electrochemical for XP Remote Transmitter) & IS Remote Transmitter
- 3 Reinforced Wires - Model OLCT 20 (Catalytic for XP Transmitter), OLCT 20D (Catalytic for XP Remote Transmitter), OLC 20, OLC 20D
Enclosure, Body Material
- Sensor Housing: 316L Stainless Steel
Environmental Protection
- IP66
Humidity
- 10 to 95 % Relative Humidity, Non-Condensing
Load Impedance
- 250 ohms - Model OLCT 20 (Catalytic for XP Transmitter), OLCT 20D (Catalytic for XP Remote Transmitter)
- 47 ohms, Max.
Loop Impedance
- With ISC Monitor: 128 ohms (4 Km with 1.5 mm²) - Model OLCT 20 (Electrochemical for XP Transmitter), OLCT 20D (Electrochemical for XP Remote Transmitter)
- With ISC Monitor: 32 ohms (1 Km with 1.5 mm²) - Model OLCT 20 (Catalytic for XP Transmitter) & IS Transmitter, OLCT 20D (Catalytic for XP Remote Transmitter) & IS Remote Transmitter
Measuring Range
- 0 to 100 % Lower Explosive Limit (LEL)
- 0 to 100 % Volume
- 0 to 5,000 ppm
- 30%
Metric Connection
- M25 Male - OLCT 20, OLC 20
NPT Connection
- 3/4” NPT Male - Model OLCT 20, OLC 20
Operating Temperature
- For Electronic (In HT Version): -25° to 200° C (-13° to 392° F) - Model OLC 20, OLC 20D
- For Electronic (In HT Version): -25° to 70° C (-13° to 158° F) - Model OLC 20, OLC 20D
- For Electronic: -25° to 60° C (-13° to 140° F) - Model OLCT 20, OLCT 20D
Output
- 4-20 mA - Model OLCT 20, OLCT 20D
Power Supply
- At the Detector: 10-26 Vdc - Model OLCT 20 (IS Transmitter), OLCT 20D (IS Remote Transmitter)
- At the Detector: 15-30 Vdc - Model OLCT 20 (XP Transmitter), OLCT 20D (XP Remote Transmitter)
Sensor, Probe Type
- Sensor: Catalytic - Model OLCT 20 (XP Transmitter), OLCT 20D, OLC 20, OLC 20D
- Sensor: Catharometer
- Sensor: Electrochemical - Model OLCT 20, OLCT 20D (XP Remote Transmitter)