KROHNE H250 M8-M9-M10 EN - Manual (Page 69)

TECHNICAL DATA
8
69
H250
www.krohne.com 04/2011 - 4000269302 MA H250-R02 en
Indicator M8 Indicator M8 Indicator M8 Indicator M8
M8M limit switches
M8E current output
Terminal connection 2.5 mm 2
Limit switch I7S2002-N
SC2-N0
SJ2-SN SJ2-S1N
Type 2-wire NAMUR 2-wire NAMUR 1 2-wire NAMUR 1
Switch configuration NC contact NC contact NO contact
Nominal voltage U
0
8 VDC 8 VDC 8 VDC
Pointer vane not read ≥ 3 mA ≥ 3 mA ≤1 mA
Pointer vane read ≤1 mA ≤1 mA ≥ 3 mA
1 safety oriented
Cable gland M16 x 1.5
Cable diameter 8…10 mm
Terminal connection 4 mm 2
Measuring signal 4...20 mA = 0…100 % flow value in 2-wire technology
Power supply 14.8...30 VDC
Min. power supply for HART ® 20.5 VDC
Power supply influence < 0.1%
Dependence on external resistance < 0.1%
Temperature influence < 10 µA / K
Max. external resistance / load 640 Ohm (30 VDC)
Min. load for HART ® 250 Ohm
M8E HART ® configuration
Manufacturer name (code) KROHNE Messtechnik (69)
Model name M8E (230)
HART ® protocol revision 5.1
Device revision 1
Physical layer FSK
Device category Transmitter
M8E process variable
M8E process variable flow rate Values [%] Signal output [mA]
Over range +102,5 (±1%) 20,24...20,56
Device error identification >106,25 ≥21,00
Maximum 112,5 22
Multidrop operation - 4,5
MA_H250_R02_en_269302_PRT.book Page 69 Tuesday, April 12, 2011 10:17 AM