7MF4232
Operating Instructions
8
C79000-B5676-C92-01
Load
R
≤
U
H
–
11
V
0, 023
A
in
Ω
,
U
H
: auxiliary power in V
230 to 500
Ω
for communication with PC/Laptop
230 to 1100
Ω
for communication with
≥
230
Ω
HART
R
-Communicator
Electrical damping
variable time constant
0 to 100 s
Current sensor
adjustable 3.6 mA to 22.8 mA
Permissible ambient temperature
1)
--40
_
C to +85
_
C silicone oil
--20
_
C to +85
_
C inert filling liquid
Observe temperature class in hazardous locations!
Permissible medium temperature
--40
_
C to +100
_
C silicone oil
--20
_
C to +100
_
C inert filling liquid
Permissible storage temperature
--50
_
C to +85
_
C
Condensation
permitted
Transmission behavior
Start of scale 0 bar, rising characteristic, silicone oil filling and isolating diaphragm made of stainless
steel. All data refer to the output span.
Measuring span ratio
MSmax
MS
r =
MSmax = maximum span
MS = set span
Measurement error when calibrating fixed
point (including hysteresis and reproducibi-
lity)
≤
0.1 % at r
≤
10
≤
0.2 % at r
>
10
Time constant T
63
at 20
_
C
(without electrical damping)
about 0.2 ms
Long-term drift
≤
0.2 % every 12 months at max. span
Influence of the ambient temperature
at --10
_
C to +60
_
C
≤
(0.1 r+0.2) %
at --40
_
C to --10
_
C and
+60
_
C to +85
_
C
≤
(0.1 r+0.15) % / 10 K
Influence of the auxiliary power
≤
0.005 % per 1 V change in voltage
Influence of the installation position
≤
0.05 mbar to 10
_
of deviation
Electromagnetic compatibility
Resistance to interference
EN 50082-2 and NAMUR NE 21, May 1993
Spurous emission
EN 50081-1
1)
Note:
At temperatures below --20
_
C the digital indicator may no longer be legible under some circumstances due to its inertia.