KROHNE MFC 400 EN - Manual (Page 126)

8
TECHNICAL DATA
126
MFC 400
www.krohne.com 08/2013 - 4002075802 - MA MFC 400 R02 en
Inputs and outputs
General All outputs are electrically isolated from each other and from all other circuits.
All operating data and output values can be adjusted.
Description of abbreviations U
ext
= external voltage; R
L
= load + resistance;
U
0
= terminal voltage; I
nom
= nominal current
Safety limit values (Ex i):
U
i
= max. input voltage; I
i
= max. input current; P
i
= max. input power rating;
C
i
= max. input capacity; L
i
= max. input inductivity
Current output Current output Current output Current output
Output data Volume flow, mass flow, temperature, density, flow velocity, diagnostic value, 2-
phase signal
Concentration and concentration flow are also possible with available concentration
measurement (optional).
Temperature coefficient Typically ±30 ppm/K
Settings Without HART Without HART Without HART Without HART ®
Q = 0%: 0…20 mA; Q = 100%: 10…20 mA
Error identification: selectable 3…22 mA
With HART With HART With HART With HART ®
Q = 0%: 4…20 mA; Q = 100%: 10…20 mA
Error identification: selectable 3…22 mA
Operating data Basic I/Os Basic I/Os Basic I/Os Basic I/Os Modular I/Os Modular I/Os Modular I/Os Modular I/Os Ex i Ex i Ex i Ex i
Active U
int, nom
= 24 VDC
I ≤ 22 mA
R
L
≤ 1 kΩ
U
int, nom
= 20 VDC
I ≤ 22 mA
R
L
≤ 450 Ω
U
0
= 21 V
I
0
= 90 mA
P
0
= 0.5 W
C
0
= 90 nF / L
0
= 2 mH
C
0
= 110 nF / L
0
= 0.5 mH
Passive U
ext
≤ 32 VDC
I ≤ 22 mA
U
0
≥ 1.8 V
R
L
≤ (U
ext
- U
0
) / I
max
U
ext
≤ 32 VDC
I ≤ 22 mA
U
0
≥ 4 V
R
L
≤ (U
ext
- U
0
) / I
max
U
i
= 30 V
I
i
= 100 mA
P
i
= 1 W
C
i
= 10 nF
L
i
~ 0 mH
.book Page 126 Monday, August 26, 2013 9:05 AM