Betriebsanleitung
LTB034X
Operating instructions
Version 1
Mode d’emploi
29.01.2024
Instrucciones de servicio
11/48
LTB034X / 2024/02
If a Trimod Besta level switch is used in a safety-relevant application according to IEC 61508 and
IEC 61511, the safety manual must be taken into consideration before installing and commissioning
the switch. The safety manual lists the restrictions and limitations of the IEC 61508 certification of
the Trimod Besta level switches.
The safety manual can be downloaded from http://www.trimodbesta.com/downloads/Operating In-
struction/
4.
Conformity of standards
Trimod Besta level switches type B
…8, B…7, B…5 are conform with the requirements of:
EX-protection
EN IEC 60079-0, EN 60079-11, EN 60079-26
RoHS
EN IEC 63000
Safety Integrity Level SIL
IEC 61508:2010
5.
Technical Data
Ex-protection-data acc. to 2014/34/EU
Explosion protection marking
II 1/2 G Ex ia IIC T6 Ga/Gb
EU-Type-Examination Certificate
EPS 12 ATEX 1430 X
CE marking
2004
Ex-protection-data acc. to UK SI 2016 No. 1107
Explosion protection marking
II 1/2 G Ex ia IIC T6 Ga/Gb
UK-Type-Examination Certificate
EPS 22 UKEX 1261 X
UKCA marking
8507
Ex-protection-data acc. to IECEx scheme
Explosion protection marking
Ex ia IIC T6 Ga/Gb
IECEx Certificate of Conformity
IECEx EPS 15.0038 X
Safety Integrity Level (SIL)
Types
assembled with
SIL Level
B…, 2B…, 5B…, HB…, 5HB…,
TDB…, 5TDB…, U…B…, 5U…B…,
etc.
1 microswitch
SIL 1 (SIL 3 capable)
BB…, 2BB…, 5BB…, HBB…,
5HBB…, TDBB…, 5TDBB…,
U…BB…, 5U…BB…, etc.
2 microswitches
SIL 2 (SIL 3 capable)
Electrical connection:
The electrical connection should be carried out in accordance with the regulations for explosion proof
devices.
If temperatures on cable glands are higher than 70°C or higher than 80°C at the branching conduc-
tor, then only a certified temperature resistant cable shall be connected.
Not suitable for the switching of motor loads and incandescent lamp loads. The device is not pro-
tected against excess current.
The rated cross-section of the conductor to be considered here must be at least 0,5 mm².
Connection cables may not be bared for a distance of more than 3 mm from the terminal screw.
Wire end ferrules must always be used.