Oldham OLCT80Fixed Gas Detector Developed in compliance with the strictest specifications, OLCT80 fixed gas detectors provide market leading solutions

The OLCT80 is cost efficient and superior in technology performances

allowing it to be used across a multitude of applications. The OCLT80

provides distinguished performance in offshore, pharmaceutical and

typical oil and gas applications.

Stand Alone Central Unit The flexibility of the connection modes means that the OLCT80 sensors

can be connected either; in loop (opto-isolated - up to 16 sensors), 4-20

mA, or under direct power to operate as a central unit.

Reliability That’s Legislation Compliant The OLCT80 Series is certified to the specifications required by standards

EN 50054, 45544 and 50104 (environmental standards, explosive and toxic

gases and oxygen) and to the specifications of standards EN 50270, EN

60529 (electromagnetic compatibility, ingress protection).

Project Driven, Bespoke Solutions Using our expert engineering knowledge, the a1-cbiss project team

produce the design, specify equipment and integrate the system before

it’s delivered to site by our service and maintenance team

KEYBENEFITS

• Low power consumption

• Reduced wiring cost

• Noninvasive operation via

intrinsically safe infrared remote

control - one man calibration

• Integrated relays

• Direct link, 4-20 mA and isolated

sensor mode

• Pre-calibrated sensors for immediate

detection of LEL, toxic gases & oxygen

“ Available as remote, flameproof or intrinsically safe, the OLCT80 suits your application

“

TECHNICALSPECIFICATION

PERFORMANCE• Detection principles: Catalytic, Electrochemical, IR, Semi

conductor

• Detected gases: Explosive, toxic and oxygen

• Inputs: Two analog inputs 4-20 mA

SIGNAL OUTPUTS• Logic (relay contacts): Relay

• Analog: Standardised 4-20 mA output

• Digital: Two independent opto-isolated RS 485 ports

• Signal faults: I < 0.5 mA

• Alarms: 2 programmable thresholds per channel

RELAYS• Type: SPDT

• Number: 3

• Contact: RCT changer-over

• Breaking capacity: 2A / 250 VAC / 30 VDC

• Wiring / connection: Basic version, 6 inputs : 4 M20 and 2

M25

Cert No. 996ISO 9001

11 Ark Royal Way, Lairdside Technology Park, Tranmere, Wirral, CH41 9HTT: +44(0)151 666 8300 F: +44(0)151 666 8329 E: sales@a1-cbiss.com W: www.a1-cbiss.com Buy Online: shop.a1-cbiss.com

SENSORSPECIFICATIONGases Sensor Type Range Operating Temp Life Span

(in months) IP Rating

O2 Electrochemical 30,00% -20°C to +50°C 28 66

CO Electrochemical 100, 300 and 1000 -20°C to +50°C 48 66

H2S Electrochemical 30, 100 and 1000 -20°C to +50°C 48 66

NO Electrochemical 100, 300 and 1000 -20°C to +50°C 36 66

NO2 Electrochemical 10 and 30,0 -20°C to +50°C 26 66

SO2 Electrochemical 10,0 30,0 and 100 -20°C to +50°C 36 66

Cl2 Electrochemical 10,0 -20°C to +50°C 26 66

H2 Electrochemical 2000 -20°C to +50°C 26 66

HCl Electrochemical 30,0 and 100 -20°C to +40°C 26 66

HCN Electrochemical 10,0 and 30,0 -20°C to +40°C 26 66

MH3 Electrochemical 1001000

-20°C to +40°C-20°C to +40°C

2626 66

O3 Electrochemical 1,00 -20°C to +40°C 20 66

PH3 Electrochemical 1,00 -20°C to +40°C 20 66

ClO2 Electrochemical 3,00 -20°C to +50°C 26 66

SiH4 Electrochemical 50 -20°C to +40°C 20 66

AsH3 Electrochemical 1,00 -10°C to +40°C 26 66

CH4 Catharometre 0-100%vol -20°C to +50°C 60 66

H2 Catharometre 0-100%vol -20°C to +50°C 60 66

NH3 Catalytic 0-5000 -20°C to +50°C 36 66

Flammable gas Catalytic 0-100% LIE -20°C to +70°C 60 66

VOC Semi-conductor 500 ppm -20°C to +50°C 30 66