TRANSMITTERS

OLCT80

OLCT 80 d or id(with intrinsic safety

sensor block)

II2GD For combustible and toxic gases and

oxygen Fitted with pre-calibrated sensor blocks Up to 9 cable-glands

(powers/inputs/outputs) Measurement and alarms visualisation

MODULAR AND FLEXIBLE

OLCT80 :dimensions and weights

IR bloc version :367 x (h) 189 x (p) 120 mm

Weights: # 2.95Kgs LEL, Tox and

O2 versions

# 4.78Kgs IR bloc version.

OLCT 80 (indications)Alarms 1 and 2

flashing/fixed

alphanumeric readout, (units, type of gas, internal parametres , etc..)

Measurement

Remote control IR detector

ON/OFFTrouble alarm

• Fitted with a memory: 3 files (FIFO 2O max.) :

• last events ( hour and date).

• Last measurements ( hour and date).

• Histograms of calibrations and drifts.

LOCAL INDICATIONS…

OLCT 80

OLCT 80: analog/digital output signals

4/20 mA with smart signal processing: Analog signal 0…4-20…25 mA or 1/0 RS485 (1200bauds,38kb Modbus ASCII

for MX62) The RS485 link gives access to: The measurement, status and default Internal relays

The relays are 2A /250VAC ( with potentiel free SPDT contacts)

Relays are actuated either :

- directly by the sensor electronics of the sensor ( programmable) or supplementary inputs

- from the MX62 central unit,

- or the control unit system to which connected the sensor is connected .

OLCT 80:relay option

The relays can be :

- in FAIL SAFE or Negative safety

- Triggered on increasing or decreasing alarms

- manually * or automatically acknowledged

* by remote control, by pressing an external pushbutton connected to the dedicated binary input * by acknowledging on the MX62 or the control system to which the sensor is connected .

OLCT 80:relay option

OLCT20OLCT IR

0-3V4-20mA

0-3V4-20mA

Block of cell

Analog inputN° 1

Analog inputN° 2

AL1

AL2

CENTRAL UNIT MX62

Faultgestion

MX62 protocole

FAULT RELAY

RELAY 2

RELAY 1

Positive safety or not

internal or external ( MX62) actions

programmablealarm levels

Programmableactionsmanual or automatic acknowledgement

Parametres

CONTACTS OF FAULT RELAY

CONTACTS OF RELAY 2

CONTACTS OF RELAY 1

INCLUDED

OLCT 80

Precalibrated sensor block

« OLCT20 »

« is» range accepted

Remore sensor version (local

display)

OR

OLCT 80 / IRFitted with

adaptor

MANY POSSIBILITIES

Cell block type « OLCT… »

RS485 (M20) input

Power supply (M25) input

RS485 (M20) output

Power supply (M25) output

relays(M20), contacts

TOR output (M20)

Option

OLCT 80 For classified

explosion risk zones

It can be used such as a local stand alone fixed unit.

INCLUDED

OLCT 80 :extremelylow energy requirements

Power supply : from 11 to 28Vcc Tox, O2.

: from 16 to 28 Vcc (LEL + OLCT IR)

consumptions* : # < 10 mA Tox et O2 versions

: # < 30 mA LEL version

: # < 190 mA IR version. (estimation)

This major advantage means that more sensors can be connected, with smaller wire cross-sections and over greater distances.

* about: without relays, without 4…20mA and 10% of back-light

INCLUDED

ex: the loop allows a gestion of

16 adresses ( lenght of 1.2 to 4.8 Kms *

Section 1

Section 2

< 1.2 Kms

* Example with more than 3 TOX. sensors. Power supply wiring :2x0,75mm² + network wiring: 1paire of 0.32 mm².

OLCT 80

local power supply.

µC A

µC B

INTERFACE RS485

INTERFACE RS485

INTERFACE RS485

INTERFACE RS485

MX62

adapter module for digital adressable sensors in a loop

Bus loop

RS485

RS485

ALIM

4 adapter modules per MX62 16 adresses per loop

16 adresses/module

Non-intrusive dialogue via intrinsically safe IR remote control

Without opening, an IR remote control allows a remote dialogue with the sensor, during operations of maintenance or configuration. Marking : IR20 CE 0080

II 2 G

EEx ia IIC T4

INERIS 04ATEX0011X

IR remote control « IR20 » Receptor

accessible informations via the remote control Measurements from the sensor block, the

two 4-20 mA auxiliary inputs. Last MIN et MAX measurements since the

last calibration

calibrations « ZERO » and « SPAN » of 3 inputs (sensor, 4-20 mA, binary …)

Alarm relays programming

alarm levels programming …..OLCT 80