10

46-602 B40 Liquid Level Switches

4.2

Agency Approvals

Œ

IEC Installation Instructions:

The cable entry and closing devices shall be Ex d certified suitable for the conditions of use

and correctly installed.

For ambient temperatures above +55° C or for process temperatures above +150° C, suitable

heat resistant cables shall be used.

Heat extensions (between process connection and housing) shall never be insulated.

Special conditions for safe use:

When the equipment is installed in process temperatures higher than +85° C the temperature

classification must be reduced according to the following table as per IEC60079-0.

AGENCY

APPROVED MODEL

APPROVAL CLASSES

FM

All with an electric switch mechanism and a housing

Class

I,Div1,GroupsC&D

listed as Type 4X/7/9

Class

II,Div1,GroupsE,F&G

All with an electric switch mechanism and a housing

Class

I,Div1,GroupsB,C&D

listed as Type 4X/7/9 Class

I,Div1,GroupB

Class

II,Div1,GroupsE,F&G

CSA

All with a Series 2, 3, F, L or HS electric switch mechanism

Class

I,Div2,GroupsB,C&D

and a housing listed as CSA Type 4X

All with an electric switch mechanism and a housing

Class

I,Div1,GroupsC&D

listed as Type 4X/7/9

Class

II,Div1,GroupsE,F&G

All with an electric switch mechanism and a housing

Class

I,Div1,GroupsB,C&D

listed as Type 4X/7/9 Class

I,Div1,GroupB

Class

II,Div1,GroupsE,F&G

ATEX / IEC Ex

Œ

All with an electric switch mechanism and an

ATEX

II2GEExdIICT6

ATEX housing

IEC Ex Ex d

IICT6

CE

Low Voltage Directives 73/23/EEC & 93/68/EEC

Installation Category

II

Per Harmonized Standard:

Pollution Degree 2

EN 61010-1/1993 & Amendment No. 1

Maximum Process

Temperature

Temperature

Classification

< 85° C

T6

< 100° C

T5

< 135° C

T4

< 200° C

T3

< 300° C

T2

< 450° C

T1

These units are in conformity with IECEx KEM 05.0020X

Classification Ex d

IICT6

Tambient -40° C to +70° C