KROHNE H250 M9 ATEX II2G Ex i EN - Manual (Page 11)

DEVICE DESCRIPTION
2
11
H250 M9
www.krohne.com 11/2012 - 4000345604 MA H250/M9-Ex-II2G-AD R06 en
2.8 Electrical data
Built-in equipment for the variable area flowmeter may only be connected to separate
intrinsically safe circuits with the following maximum values:
Electrical equipment Nominal voltage Nominal current
Limit switch K1 / K2 8 VDC 1...3 mA
Signal output ESK II and ESK2A 24 VDC ± 25% 4...20 mA with HART ® communication
ESK3-PA Profibus transmitter 1 9...24 VDC 12 mA
1 Further information and instructions for operation of the ESK3-PA Profibus transmitter are provided in separate sup-
plementary instructions.
Maximum values
Built-in equipment U
i
[V] Ii[mA] P
i
[mW] C
i
[nF] L
i
[μH]
ESKII / ESK2A 30 100 1000 20 ~ 0
ESK3-PA 1 24 380 5320 ~ 0 ~ 0
I7S23,5-N
SC3,5-N0
16 25 64 150 150
16 52 169 150 150
SJ3.5-SN
SJ3.5-S1N
16 25 64 30 100
16 52 169 30 100
1 FISCO Field device
AD_H250_M9_II2G_R06_en_345604_PRT.book Page 11 Thursday, November 8, 2012 9:42 AM