Explosion proof Level Switches

Trimod Besta level switches have been accepted by the world's leading accreditation bodies for many years. We ensure the high quality through recurring audits and continuously monitor our production. We continually extend the number of authorizations for new markets and applications for our customers.

Flameproof Trimod Besta Level Switches

SIL 1 and SIL 2

Flameproof Trimod Besta level switches are designed in accordance with EN standards and are tested and approved by PTB. Available with square flanges (Standard range) and with flanges acc. to DIN, ANSI, BS and JIS (Industrial ranges).

All Trimod Besta level switches of the  Ex-proof range may be side or top mounted.

Protection classifications
Ex de IIC T6 for switch modules XA. etc.EPS 09 ATEX 1238 X

Ex ia d IIC T6 for switch modules XB., XI., XIE9. etc.EPS 09 ATEX 1238 X

Hermetically sealed Trimod Besta Level Switches

SIL 1 and SIL 2


These switches are available in two versions.
Ex ed IIC T6 .. T5 Ga/Gb for switch modules Z..8, ZH..8, ZTD..8 etc.EPS 12 ATEX 1430 X

Ex ed IIC T6 ..T5 for switch modules Z..5, ZH..5, ZTD..5 etc.IECEx PTB 07.0003

Intrinsically safe Trimod Besta Level Switches

SIL 1

Level switches with gold plated contacts (type range B) or with proximity switches acc. to NAMUR (type range I, IE9 etc.) are for connection to intrinsically safe circuits and approved, depending on national regulations, for Zone 1 or Zone 0 (float).

Protection classifications
Ex ia IIC T6 .. T2 Ga/Gb for switch modules I..8, IE9..8 etc.EPS 12 ATEX 1430 X
Ex ia IIC T6..T2 for switch modules I..5, IE9..5 etc.IECEx PTB 07.0005

Pneumatic Trimod Besta Level Switches and Controllers

Pneumatic level switches of the type ranges FP and FM are approved for installation in Zone 1.

Trimod Besta level switches have been accepted by the world's leading accreditation bodies for many years.


Safety Integrity Level (SIL)


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