46-622 Series 3 Liquid Level Switches ASME B31.3 Construction
17
➀
Controls with two “HS” switches are not ATEX approved.
➁ 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.
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.
All with an electric switch mechanism and a housing Class I, Div 1, Groups C & D
listed as TYPE 4X/7/9 Class II, Div 1, Groups E, F & G
All with an electric switch mechanism and a housing Class I, Div 1, Groups B, C & D
listed as TYPE 4X/7/9 Class I, Div 1, Group B Class II, Div 1, Groups E, F & G
All with a Series HS, F, 8 or 9 electric switch mechanism Class I, Div 2, Groups A, B, C & D
and a housing listed as CSA TYPE 4X
All with an electric switch mechanism and a housing Class I, Div 1, Groups C & D
listed as TYPE 4X/7/9 Class II, Div 1, Groups E, F & G
All with an electric switch mechanism and a housing Class I, Div 1, Groups B, C & D
listed as TYPE 4X/7/9 Class I, Div 1, Group B Class II, Div 1, Groups E, F & G
➁ All with an electric switch mechanism and an ATEX II 2 G EEx d IIC T6
ATEX housing ➀ 94/9/EC
IEC Ex Ex d IIC T6
IP 66
Low Voltage Directives 2006/95/EC Installation Category II
Per Harmonized Standard: Pollution Degree 2
EN 61010-1/1993 & Amendment No. 1
< 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 IIC T6
T
ambient
-40 °C to +70 °C
5.0 Reference Information
5.1 Agency Approvals
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