OLCT 80/OLCT 80 Wireless

A triple head multi-function transmitter
On-board display
3 built-in relays for fault, low and high alarms (alarms in relay are fully programmable)
Two 4-20 mA inputs, built in relays, memory settings and requests by remote control
4-20 mA and RS 485 outputs, loop connection
New Wireless Version available suitable for explosive areas
Flameproof or intrinsic-safety sensors
Low power requirements;
Universally accepted frequency of 2.4 GHz/900MHz; and
Flexible input/output options, including analog, TOR and Modbus RS485

Product Information

Overview

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

Specification

Technical Specifications

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	OLCT 80 id (with intrinsic safety sensor block) II 2GD EEx d [ia] ia IIC T4 (T135 °C) INERIS 03ATEX0240X
Electromagnetic compatibility:	Complies with EN 50270

Sensor Technical Specifications

Gases	Type of sensor	Range (ppm)	Operating temperature*	Relative humidity uncondensed	Pressure	Accuracy at full scale (at atmospheric pressure)	Life span (in month)	T (50)	IP	IS	AD
O2	electrochemical	30,00%	-20°C to +50°C	10% to 95% RH	Atm +/- 10%	from 5 to 30% = 0,4%vol	28	6	66	YES	YES
CO	electrochemical	100, 300 and 1000	-20°C to +50°C	10% to 95% RH	Atm +/- 10%	+/- 2 ppm (range 0-100)	48	10	66	YES	YES
H2S	electrochemical	30, 100 and 1000	-20°C to +50°C	10% to 95% RH	Atm +/- 10%	+/- 1,5 ppm (between 0-30 ppm)	48	15	66	YES	YES
NO	electrochemical	100, 300 and 1000	-20°C to +50°C	10% to 95% RH	Atm +/- 10%	+/- 2 ppm (range 0-100)	36	15	66	YES	YES
NO2	electrochemical	10 and 30,0	-20°C to +50°C	10% to 95% RH	Atm +/- 10%	+/- 0,8 ppm	26	20	66	YES	NO
SO2	electrochemical	10,0 30,0 and 100	-10°C to +50°C	10% to 95% RH	Atm +/- 10%	+/- 0,7 ppm range 0-10	36	15	66	YES	NO
Cl2	electrochemical	10,0	-20°C to +50°C	10% to 95% RH	Atm +/- 10%	+/- 0,5 ppm	26	50	66	YES	NO
H2	electrochemical	2000	-20°C to +50°C	10% to 95% RH	Atm +/- 10%	+/-5 ppm range 0-100	26	50	66	YES	YES
HCl	electrochemical	30,0 and 100	-20°C to +40°C	10% to 95% RH	Atm +/- 10%	+/- 0,5 ppm range 0-10	26	50	66	YES	NO
HCN	electrochemical	10,0 and 30,0	-20°C to +40°C	10% to 95% RH	Atm +/- 10%	+/- 0,3 ppm range 0-10	26	40	66	YES	NO
NH3	electrochemical	100	-20°C to +40°C	10% to 95% RH	Atm +/- 10% Atm +/- 10%	+/-5 ppm +/- 10 ppm range 0-1000	26 26	50 50	66 66	YES YES	YES YES
		1000	-20°C to +40°C	10% to 95% RH	Atm +/- 10%	+/-0,05 ppm	20	50	66	YES	NO
O3	electrochemical	1,00	-10°C to +40°C	10% to 95% RH	Atm +/- 10%	+/- 0,05 ppm	20	40	66	YES	NO
PH3	electrochemical	1,00	-20°C to +40°C	10% to 95% RH	Atm +/- 10%	+/- 0,3 ppm	26	50	66	YES	NO
ClO2	electrochemical	3,00	-20°C to +50°C	10% to 95% RH	Atm +/- 10%	+/- 1 ppm	20	40	66	YES	NO
SiH4	electrochemical	50	-20°C to +40°C	10% to 95% RH	Atm +/- 10%	+/- 0,05 ppm	26	40	66	YES	NO
AsH3	electrochemical	1,00	-10°C to +40°C	20% to 95% RH	Atm +/- 10%	1% vol	60	5	66
CH4	catharometre	0-100%vol	-20°C to +50°C	10% to 95% RH	Atm +/- 10%	1% vol	60	5	66	YES	YES
H2	catharometre	0-100%vol	-20°C to +50°C	10% to 95% RH	Atm +/- 10%	100 ppm	36	8	66	YES	YES
NH3	catalytic	0-5000	-20°C to +50°C	10% to 95% RH	Atm +/- 10%	1% lIE between 0- 60%LIE	60	5	66
Flammable gas	catalytic	0-100% LIE	-20°C to +70°C -20°C to 200°C	10% to 95% RH 10% to 95% RH	Atm +/- 10%	1% lIE between 0- 60%LIE	60	5	66
VOC	semi-conductor	500 ppm	-20°C to +50°C	10% to 95% RH	Atm +/- 10%	100 ppm +/-5 ppm	30	25	66	NO	YES
CO/H2 null	electrochemical	1000 ppm	-20°C to +50°C	10% to 95% RH	Atm +/- 10%	+/- 4 ppm if measure < 200 ppm	36	25	66	YES	YES
CO sensor						+/-20 ppm if measure>200 ppm				YES	YES