KROHNE OPTIFLUX 2000-4000 IECEx EN - Manual (Page 11)

ELECTRICAL CONNECTIONS
3
11
OPTIFLUX
www.krohne.com 06/2010 - 7312092100 - AD OPTIFLUX IECEx R01 en
3.2 Connections
The OPTIFLUX 2100 C / 4100 C flowmeters contain following terminals:
The housing of the OPTIFLUX 2100 C / 4100 C flowmeter must be connected to the equipotential
bonding system of the hazardous area. See IEC 60 079-14 clause 6.3. For this purpose the
internal or external connection facility (PE clamp) can be used.
Terminals Circuit Type of protection Ex
L, N, PE
L+, L-
Power
100-230 Vac, +10% / -15%, 8VA, Um = 253 V
or
24 Vac/dc, for connection to a PELV circuit,
AC: +10 / -15%, 8VA
DC: +30% / -25%, 4W
Um = 253 V
Ex e
A+, A, A-
S
C, C-
D, D-
Current output, active or passive
screen (frame)
Status
Pulse
All circuits Un ≤ 32 V, In ≤ 50 mA,
for connection to a PELV circuit, Um = 253 V
Ex e