Oldham olct ir Technical Manual
TRANSMITTER DETECTORS
FOR EXPLOSIVE GASES
TECHNICAL MANUAL
Ref.:
CD0000
4
Code: 06_MT_OLCTIR_GB_24_11_06
3
GAS DETECTION
We are delighted that you have chosen an ISC/OLDHAM instrument and would like to thank you for your
choice.
We have taken all the necessary measures to ensure that your instrument provides total satisfaction.
Now it is important to read this document carefully.
EEXXTTEENNTT OOFF RREESSPPOONNSSIIBBIILLIITTYY
* ISC/OLDHAM declines its responsibility towards any person for material damage, physical injury or death
resulting wholly or partly from inappropriate use, installation or storage of its equipment resulting from failure to
observe instructions and warnings and/or standards and regulations in force.
* ISC/OLDHAM neither supports nor authorises any company, physical or moral person to assume responsibility on
behalf of ISC/OLDHAM , even if it is involved in the sale of ISC/OLDHAM products.
* ISC/OLDHAM cannot be held responsible for direct or indirect damage or be required to pay direct or indirect
compensation resulting from the sale or use of any of its products IF THESE PRODUCTS HAVE NOT BEEN
DEFINED AND CHOSEN BY ISC/OLDHAM FOR THEIR SPECIFIC USE.
CCLLAAUUSSEESS CCOONNCCEERRNNIINNGG PPRROOPPEERRTTYY
* Drawings, plans, specifications and information included in this document contain confidential information that is
the property of I SC/OLDHAM
* None of this information may be reproduced, copied, divulged or translated, by physical, electronic or any other
means, nor used as the basis for the manufacture or sale of ISC/OLDHAM equipment or for any other reasons
without prior consent from ISC/OLDHAM
WWAARRNNIINNGGSS
* This document is not contractually binding. In the interests of its customers, ISC/OLDHAM reserves to modify the
technical specifications of its equipment without notice, in order to improve its performance.
* READ THIS MANUAL CAREFULLY BEFORE FIRST USE OF THE EQUIPMENT: this manual must be
read by any person who is or will be responsible for using, maintaining or repairing this equipment.
* This equipment will only provide the announced performance levels if it is used, maintained and repaired
according to ISC/OLDHAM directives, by ISC/OLDHAM personnel or by personnel approved by
ISC/OLDHAM
GGUUAARRAANNTTEEEE
2 years guarantee in normal conditions of use on parts and technical labour, return in our workshops, excluding
consumables (sensors, filters, etc.)
4
OOLLCCTT IIRR ""EE"" vveerrssiioonn
wwiitthh aannttii--ssppllaasshh
ccoovveerr
Figure 1
Earth screw
(for armoured or non-armoured
cable)
Cable gland, M20
Fastening lug
5
OOLLCCTT IIRR ""EE"" vveerrssiioonn
EExxppllooddeedd vviieeww
Figure 2
Option: non-
armoured cable
gland, ref 6343493
REF. QTY NAME OFSA REF
1 1 ANTI-SPLASH COVER 6124954
2 1 O-RING DIA. 65 x 3 6136242
3 1 LOCKING NUT, M5 6903376
4 1 "E" ENCLOSURE COVER 6123575
5 1 CABLE GLAND, M20, ARMOURED CABLE 6343489
5 1 CABLE GLAND, M20, NON-ARMOURED CABLE 6343493
6 1 EEx 2-PIN TERMINAL BLOCK 6152989
7 1 O-RING DIA. 69 x 2 6135036
8 1 IR SENSOR LED CARD 6451495
6
FFiigguurree 33
OOLLCCTT IIRR MM2255 vveerrssiioonn
EExxppllooddeedd vviieeww
ANTI-SPLASH COVER
O-RING, DIA. 66 x 3
LOCKING NUT M5
6313862
6136100
6903376
7
FFiigguurree 44
OOLLCCTT IIRR MM2255 vveerrssiioonn
wwiitthh aannttii--ssppllaasshh ccoovveerr
Earth screw
Thread: M25, pitch 1.5
8
FFiigguurree 55
OOLLCCTT IIRR EE vveerrssiioonn
CCoonnnneeccttiioonn tteerrmmiinnaall
bblloocckk
OLCT IR connections
Iout
Output signal in mA (terminal 1
of ISC/OLDHAM central units)
0V
Power supply 0 V (terminal 2 of
ISC/OLDHAM central units)
+24VDC
Power supply + (terminal 3 of
ISC/OLDHAM central units)
Ser = service (do not use)
Iout
0V
+24VDC
Ser
(for armoured or non-armoured
cable)
Check LED
Magnetic receiver
Cable gland, M20
9
/M25
FFiigguurree 66
OOLLCCTT IIRR EE vveerrssiioonn
wwiitthh ggaass cciirrccuullaattiioonn hheeaadd
((ccaalliibbrraattiioonn ppiippee))
GAS INLET AND
OUTLET
GAS CIRCULATION
HEAD
Earth screw
Fastening lug
Cable gland, M20
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