KROHNE H250 M40 EN - Manual (Page 67)

TECHNICAL DATA
8
67
H250 M40
www.krohne.com 11/2012 - 4000640702 MA H250 M40 R02 en
ESK4-T with LCD, binary inputs and outputs and digital counter
Approvals
Binary output
Two binary outputs Galvanically isolated, passive
Mode Switch output NAMUR or transistor (open
collector)
Configurable as Switch contact or
Pulse output
Opener/NO contact or
max. 10 pulses / s
NAMUR switch output
Power supply 8,2 VDC
Signal current > 3 mA switching value not
reached;
< 1 mA switching value
reached
Switch output transistor (open collector)
Power supply Nominal 24 VDC, maximal 30 VDC
P
max
500 mW
Continuous current max. 100 mA
No load current I
0
≤ 2mA
Pulse output
T
on
configurable from 50...500 ms
T
off
depending on flow rate
Pulse value configurable in flow units e.g. 5 pulses / m 3
Binary input
Input Galvanically isolated
Mode Reset counters or run/stop
Configurable as active Hi / active Lo
H- signal 16...30 VDC
Internal resistance R
i
typ. 20 kOhm
T
on
(active) ≥500 ms
Standard Screen Marking
ATEX /
IECEx
M40 mechanical II2GD IIC
II3GD IIC
M40 electrical III2G Ex ia IIC T6 Gb
II2G Ex d IIC T6 Gb
II3G Ex nA IIC T6 Gc
II2D Ex t IIIC T70°C Db
FM (USA)
FM (Canada)
M40 pending
NEPSI M40 pending
MA_H250_M40_R02_en_640702_PRT.book Page 67 Wednesday, November 28, 2012 12:23 PM