OPI 1000L Series
These
components
are RoHS
compliant
Pb
SCHEDULE OF LIMITATIONS
EC TYPE EXAMINATION CERTIFICATE No. BAS01ATEX1278U/5
SCHEDULE OF LIMITATIONS
28th September 2012
1 - The Opto Isolator must be mounted on a p.c.b. having a CTI of at least 175 such that creepage and clearance
distances are not impaired. i.e.:- on an uncoated printed circuit board that maintains at least 10mm in air.
2 - The Opto Isolator may be used to provide isolation between either:-
(i) A non-intrinsically safe circuit and an intrinsically safe circuit, (Non IS:IS), where the IS circuit voltage is not
greater than 75 Volts peak or d.c..
OR
(ii) Two intrinsically safe circuits (IS:IS), where the sum of the two circuit voltages is not greater than 375 Volts
peak or d.c..
3 - The Opto Isolator must be installed such that the connection pins are provided with a degree of protection of at least
IP20 where gasses and vapours may be present. If the Opto Isolator is to be installed where dusts represent a
hazard, then it must be provided with a degree of protection of at least IP54 and the overall apparatus must be
Appropriately certified for the requirements for Dusts.
4 - The Opto Isolator must be installed with external power limiting components as specified in:-
EN60079-11:2012, Clause 8.9.2.
CERTIFICATE No.:- IECEx BAS 06.0021U
Date of Issue:- 2012-10-02
ISSUE No.: 4
SCHEDULE OF LIMITATIONS
1.
2.
3.
When used in intrinsically safe apparatus it will be necessary to determine a
surface temperature classification for the opto-isolator:-
The Opto Isolator must be mounted on a printed circuit board such that
creepage and clearance distances are not impaired.
The Opto Coupler must be installed such that the connection pins are provided with a degree of protection of IP20
where gasses and vapours may be present. If the Opto Coupler is to be installed within apparatus where flamma-
ble dusts represent the hazard then it must be provided with a degree of protection of IP54 and the apparatus
must be appropriately certified for dust hazards.
5
The Opto Isolator must be installed with external power limiting components as specified in:-
IEC60079-11:2011 Ed 6, Clause 8.9.2.
BEDFORD OPTO TECHNOLOGY LTD
1,BIGGAR BUSINESS PARK, BIGGAR, LANARKSHIRE, ML12 6FX
Tel: +44 (0) 1899 221221 Fax: +44 (0) 1899 221009
5/6
Website: bot.co.uk E-mail: bill@bot.co.uk
Iss P 20.10.12
BOT [ BEDFORD OPTO TECHNOLOGY LTD. ]
