HYDAC ELECTRONIC HFS 2500, Руководство по эксплуатации, Страница: 26 / 40

Flow switch HFS 2500 with ATEX approval Page 6
Status 2020/05/19 HYDAC ELECTRONIC GMBH Mat. No.: 669884
4.4 Electrical installation
4.4.1 Operating conditions and technical safety data of the Ex-protected contacts model
SEM-A (SPDT/Change over) and SEM-E (SPST/Normally Open) according to
PTB 19 ATEX 2008 X
EN 60079-0: 2018
/
EN 60079-18:2015 / EN 60079-18/A1:2018 / EN 60079-31:2014
T6 T5
Typ SEM – A… CE 0102
max. ambient temperature 75 °C
Typ SEM – A… CE 0102 max.
ambient temperature 90 °C
II 2G Ex mb IIC T6 Gb
II 2D Ex tb IIIC T80 °C Db
II 2G Ex mb IIC T5 Gb
II 2D Ex tb IIIC T100 °C Db
Typ SEM – E… CE 0102 max.
ambient temperature r 75 °C
Typ SEM – E… CE 0102 max.
ambient temperature 90 °C
II 2G Ex mb IIC T6 Gb
II 2D Ex tb IIIC T80 °C Db
II 2G Ex mb IIC T5 Gb
II 2D Ex tb IIIC T100 °C Db
The following limit values must never be exceeded, even for short periods:
Typ SEM-A (T5) SEM-E (T5) SEM-A (T6) SEM-E (T6)
Operating voltage max. 250 V max. 250 V max. 250 V max. 250 V
Switch current max. 1 A max. 2 A max. 1 A max. 2 A
Contact rating
max. 30 W max. 60 W max. 30 W max. 60 W
Max. ambient temperature 90 °C 90 °C 75 °C 75 °C
4.4.2 General notes for the electrical connection
The electrical connections must be made in accordance to local safety regulations for electrical
equipment and under observance of the regulations for the installation of electrical equipment in
hazardous areas. The connection circuits must be designed with increased safety, if the device is
not connected to intrinsically safe circuits.
The flow switches of the HFS 2500 series carry the
-mark in accordance with directive
2014/34/EU.
The switch unit is normally pre-mounted. If this is not the case, the switch unit must be inserted
between the mounting rails and then tightened with 2 screws.
The switch unit may only be connected to circuits with the following maximum ratings:
Change-over contact: SEM-A: U
max
: 250 V / I
max
: 1 A / P
max
: 30 W
Normally open contact: SEM-E: U
max
: 250 V / I
max
: 2 A / P
max
: 60 W