Type:

Transmitter-sensor

Detected gases:

Explosive, toxic and oxygen

Detection principles:

Catalytic, Electrochemical, IR, Semiconductor

Sensor block:

Pre-calibrated

Housing Sensor:

Stainless steel 316L

Enclosure:

Aluminum

Visualization:

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"

Power supply to sensor terminals:

Two independent inputs:
16 to 28 VDC ( catalytic / IR / SM cells)
12 to 28 VDC (electrochemical cell)

Maximum power

with digital link:

0.2 W (electrochemical cell) -1.3W(catalytic/SM) -4.5W(IR)

with I output at 25 mA :

0.9 W (electrochemical cell) -2W(catalytic/SM) -5.2W(IR)

with I output at 25 mA and relays activated:

2.4 W (electrochemical cell) -3.5W(catalytic/SM) -6.7W(IR)

Inputs:

Two analog inputs 4-20 mA (load resistance 120 Ω, can be used as binary)

Signal Outputs

Logic (relay contacts):

Relay

Analog:

Standardized 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

Miscellaneous

Wiring / connection:

Basic version, 6 inputs : 4 M20 and 2 M25
On request: 3 additional,2 M20 and 1 M25

Load resistance on the 4-20 mA:

500 Ω

Loop resistance:

Under central unit 21 VDC: 128 ohms ( electrochemical cell ) - 32Ω(catalytic/SM)-16Ω(IR)

Protection number:

IP 66

Operating temperatures:

-25°C to +55°C

Weight:

OLCT 80 : 3,5 kg
OLCT80 version IR : 5,3 kg

Certification Atex :

OLCT 80 d
II 2GD
EEx d IIC T5( T100°C) or T6 (T85°C)
INERIS 03ATEX0240X

Electromagnetic compatibility:

Complies with EN 50270