Device description, 8 electrical data – KROHNE H250 M9 ATEX II2G Ex i EN User 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