OLCT 80
NEW! Oldham is pleased to introduce its wireless system with the OLCT 80 field detector/transmitter. This new model allows wireless connectivity in ATEX 1 zones.
Features and benefits of the OLCT 80 Wireless include:
- An infrared remote controller and on-board display for non-intrusive, one-man calibration;
- Flameproof or intrinsic-safety sensors;
- A design suitable for explosive areas;
- Low power requirements;
- Universally accepted frequency of 2.4 GHz/900MHz; and
- Flexible input/output options, including analog, TOR and Modbus RS485
Developed in compliance with the strictest specifications, OLCT 80 transmitters are the standard in the gas detection market.
Designed to meet the demanding needs of the largest industrial companies, the OLCT 80 is a major achievement in terms of technical performance and cost optimization. Available as remote version, flameproof or intrinsic safety approved sensors depending on gases to be detected. Detects O2, combustible, toxic and refrigerant gases. Non-intrusive, one-man calibration.
New XP IR infrared sensor for detection of combustible gases or CO2.
Technical Specifications
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Type:
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Transmitter-sensor
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Detected gases:
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Explosive, toxic and oxygen
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Detection principles:
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Catalytic, Electrochemical, IR, Semiconductor
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Sensor block:
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Pre-calibrated
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Housing Sensor:
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Stainless steel 316L
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Enclosure:
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Aluminum
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Visualization:
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4-digit LCD display for measurement and one alphanumeric line for texts
Pictograms - backlighting
4 indicator lamps :
- one green : "Operation OK"
- one yellow : "Fault"
- 2 red : "Alarm 1" and "Alarm 2"
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Power supply to sensor terminals:
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Two independent inputs:
16 to 28 VDC ( catalytic / IR / SM cells)
12 to 28 VDC (electrochemical cell)
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Maximum power
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with digital link:
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0.2 W (electrochemical cell) -1.3W(catalytic/SM) -4.5W(IR)
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with I output at 25 mA :
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0.9 W (electrochemical cell) -2W(catalytic/SM) -5.2W(IR)
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with I output at 25 mA and relays activated:
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2.4 W (electrochemical cell) -3.5W(catalytic/SM) -6.7W(IR)
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Inputs:
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Two analog inputs 4-20 mA (load resistance 120 Ω, can be used as binary)
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Signal Outputs
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Logic (relay contacts):
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Relay
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Analog:
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Standardized 4-20 mA output
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Digital:
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Two independent opto-isolated RS 485 ports
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Signal faults:
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I < 0.5 mA
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Alarms:
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2 programmable thresholds per channel
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Relays
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Type:
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SPDT
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Number:
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3
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Contact:
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RCT changer-over
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Breaking capacity:
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2A / 250 VAC / 30 VDC
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Miscellaneous
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Wiring / connection:
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Basic version, 6 inputs : 4 M20 and 2 M25
On request: 3 additional,2 M20 and 1 M25
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Load resistance on the 4-20 mA:
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500 Ω
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Loop resistance:
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Under central unit 21 VDC: 128 ohms ( electrochemical cell ) - 32Ω(catalytic/SM)-16Ω(IR)
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Protection number:
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IP 66
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Operating temperatures:
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-25°C to +55°C
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Weight:
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OLCT 80 : 3,5 kg
OLCT80 version IR : 5,3 kg
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Certification Atex :
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OLCT 80 d
II 2GD
EEx d IIC T5( T100°C) or T6 (T85°C)
INERIS 03ATEX0240X
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OLCT 80 id (with intrinsic safety sensor block)
II 2GD
EEx d [ia] ia IIC T4 (T135 °C)
INERIS 03ATEX0240X |
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Electromagnetic compatibility:
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Complies with EN 50270
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ATEX ZONE 0 (CELLULE SEULEMENT) OU 1
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