KROHNE DK 37-H250 M8 ATEX II2G Ex i EN - Manual (Page 10)

2
DEVICE DESCRIPTION
10
DK37/M8 - H250/M8
www.krohne.com 09/2013 - 4000760402 MA DK37 M8 AD II2G R02 en
2.8 Electrical data
The electronic signal output may only be connected to intrinsically safe circuits. Depending on
the instrument design, the following maximum values apply per circuit:
Version DK37/M8E/.. and H250/../M8EG
Irrespective of the instrument design the following values are to be observed for each
intrinsically safe circuit in case of interconnection:
Version DK37/M8M/../K. and H250/../M8MG/K.
Depending on the built in limit switches the following values are to be observed for each
intrinsically safe circuit in case of interconnection:
The values specified for C
i
and L
i
also take into account the capacities and inductances of the
internal EMC filter.
U
i
30 VDC
I
i
100 mA
P
i
1000 mW
C
i
≈ 0
Li ≈ 0
U
i
16 VDC
I
i
25 mA
P
i
64 mW
Type of limit switch I7S2002-N
SC2-N0
SJ2-SN
SJ2-S1N
C
i
165 nF 45 nF
Li 150 µH 100 µH
AD_DK37_H250_M8_II2G_R02_en_760402_PRT.book Page 10 Friday, September 13, 2013 8:45 AM